SABnzbd

Release Notes - SABnzbd 5.1.0

This release brings a fundamental improvement to "Retry": instead of re-downloading any files with missing data, only the articles that were actually missing are fetched again. RSS got an overhaul under the hood, the interface is refreshed, and we added quite a long list of of long-requested features and bugfixes.

New features in 5.1.0

• Refreshed the interface.
• When Retrying a job, only the actually missing articles are tried again. This only works for jobs downloaded in 5.1.0 (or newer).
• RSS items are now stored in the database instead of on disk.
• New RSS Age rule to filter jobs based on their age.
• Downloaded RSS items are cleared from the RSS database after 3 days.
• Added support for filename and path pattern matching to the Cleanup List.
• Unwanted extensions will also be removed after unpacking.
• Allow job setting changes directly from Extra queue columns.
• Added support for unpacking .tar files during post-processing.
• Improved anonymization of the logs when using Show Logging.
• Added SAB_FILES environment variable to Post-processing scripts, listing all files that resulted from the job.
• New Servers will default to 16 connections instead of 8.
• Use media duration as part of Ignore Samples detection.
• Added option to (auto) sort the queue by Remaining Percentage.
• Improved support for screen readers.
• Parsing of header-encrypted RARs will use significantly fewer resources.
• Add Ayatana AppIndicator tray support on GNOME.
• Removed redundant INSTALL.txt file.
• Dropped support for Python 3.9.
• Windows and macOS: Updated Python to 3.14.6, Unrar to 7.23 and 7zip to 26.02.

Bug fixes in 5.1.0

• Prevent incorrect warnings about non-writeable directories.
• Files unrelated to job could get removed by the Cleanup List logic.
• Prevent path traversal in orphaned job APIs.
• Disk Full errors from unrar were not handled gracefully during unpacking.
• Memory leak could occur during article decoding.
• In containers (like Docker), the Article Cache could exceed the memory limit.
• Diskspace checks would be too strict when unpacking to different disk.
• Prevent deadlock when a second signal arrives during shutdown procedure.
• Verification using SFV-checks could fail, even though files were correct.
• Don't log Warning during clean shutdowns.
• Windows: Uninstall would not remove Settings or Windows Service.
• Windows: Warn for OS-limit if more than 1024 connections are configured.
• macOS: AppleDouble files could result in failures in Moving stage.
• macOS: Restarting the application resulted in Terminal window.
• macOS: Included par2cmdline-turbo will now use all available CPU-features.

Upgrade notices

• You can directly upgrade from version 3.0.0 and newer.
• Upgrading from older versions will require performing a Queue repair.

Known problems and solutions

• Read ISSUES.txt or https://sabnzbd.org/wiki/introduction/known-issues

Code Signing Policy

Windows code signing is provided by SignPath.io using a SignPath Foundation certificate.

About

SABnzbd is an open-source cross-platform binary newsreader. It simplifies the process of downloading from Usenet dramatically, thanks to its web-based user interface and advanced built-in post-processing options that automatically verify, repair, extract and clean up posts downloaded from Usenet.

(c) Copyright 2007-2026 by The SABnzbd-Team (sabnzbd.org)

Release Notes - SABnzbd 5.1.0 Release Candidate 2

This is the second release candidate of version 5.1.

New features in 5.1.0

• Refreshed the interface.
• When Retrying a job, only the actually missing articles are tried again. This only works for jobs downloaded in 5.1.0 (or newer).
• RSS items are now stored in the database instead of on disk.
• New RSS Age rule to filter jobs based on their age.
• Downloaded RSS items are cleared from the RSS database after 3 days.
• Added support for filename and path pattern matching to the Cleanup List.
• Unwanted extensions will also be removed after unpacking.
• Allow job setting changes directly from Extra queue columns.
• Added support for unpacking .tar files during post-processing.
• Improved anonymization of the logs when using Show Logging.
• Added SAB_FILES environment variable to Post-processing scripts, listing all files that resulted from the job.
• New Servers will default to 16 connections instead of 8.
• Use media duration as part of Ignore Samples detection.
• Added option to (auto) sort the queue by Remaining Percentage.
• Improved support for screen readers.
• Parsing of header-encrypted RARs will use significantly fewer resources.
• Add Ayatana AppIndicator tray support on GNOME.
• Removed redundant INSTALL.txt file.
• Dropped support for Python 3.9.
• Windows and macOS: Updated Python to 3.14.6, Unrar to 7.23 and 7zip to 26.02.

Bug fixes in 5.1.0

• Prevent incorrect warnings about non-writeable directories.
• Files unrelated to job could get removed by the Cleanup List logic.
• Prevent path traversal in orphaned job APIs.
• Disk Full errors from unrar were not handled gracefully during unpacking.
• Memory leak could occur during article decoding.
• In containers (like Docker), the Article Cache could exceed the memory limit.
• Diskspace checks would be too strict when unpacking to different disk.
• Prevent deadlock when a second signal arrives during shutdown procedure.
• Verification using SFV-checks could fail, even though files were correct.
• Windows: Uninstall would not remove Settings or Windows Service.
• Windows: Warn for OS-limit if more than 1024 connections are configured.
• macOS: AppleDouble files could result in failures in Moving stage.
• macOS: Restarting the application resulted in Terminal window.

Upgrade notices

• You can directly upgrade from version 3.0.0 and newer.
• Upgrading from older versions will require performing a Queue repair.

Known problems and solutions

• Read ISSUES.txt or https://sabnzbd.org/wiki/introduction/known-issues

Code Signing Policy

Windows code signing is provided by SignPath.io using a SignPath Foundation certificate.

About

SABnzbd is an open-source cross-platform binary newsreader. It simplifies the process of downloading from Usenet dramatically, thanks to its web-based user interface and advanced built-in post-processing options that automatically verify, repair, extract and clean up posts downloaded from Usenet.

(c) Copyright 2007-2026 by The SABnzbd-Team (sabnzbd.org)

Release Notes - SABnzbd 5.1.0 Release Candidate 1

This is the first release candidate of version 5.1. Like many other projects out there, we were able to use the shiny new AI tools to add quite a lot of long-requested features!

New features in 5.1.0

• Refreshed the interface.
• When Retrying a job, only the actually missing articles are tried again. This only works for jobs downloaded in 5.1.0 (or newer).
• RSS items are now stored in the database instead of on disk.
• New RSS Age rule to filter jobs based on their age.
• Downloaded RSS items are cleared from the RSS database after 3 days.
• Added support for filename and path pattern matching to the Cleanup List.
• Unwanted extensions will also be removed after unpacking.
• Allow job setting changes directly from Extra queue columns.
• Added support for unpacking .tar files during post-processing.
• Improved anonymization of the logs when using Show Logging.
• Added SAB_FILES environment variable to Post-processing scripts, listing all files that resulted from the job.
• New Servers will default to 16 connections instead of 8.
• Use media duration as part of Ignore Samples detection.
• Improved support for screen readers.
• Parsing of header-encrypted RARs will use significantly fewer resources.
• Removed redundant INSTALL.txt file.
• Dropped support for Python 3.9.
• Windows and macOS: Updated Python to 3.14.6, Unrar to 7.23 and 7zip to 26.02.

Bug fixes in 5.1.0

• Prevent incorrect warnings about non-writeable directories.
• Files unrelated to job could get removed by the Cleanup List logic.
• Prevent path traversal in orphaned job APIs.
• Disk Full errors from unrar were not handled gracefully during unpacking.
• Memory leak could occur during article decoding.
• Windows: Uninstall would not remove Settings or Windows Service.
• Windows: Warn for OS-limit if more than 1024 connections are configured.
• macOS: AppleDouble files could result in failures in Moving stage.
• macOS: Restarting the application resulted in Terminal window.

Upgrade notices

• You can directly upgrade from version 3.0.0 and newer.
• Upgrading from older versions will require performing a Queue repair.

Known problems and solutions

• Read ISSUES.txt or https://sabnzbd.org/wiki/introduction/known-issues

Code Signing Policy

Windows code signing is provided by SignPath.io using a SignPath Foundation certificate.

About

SABnzbd is an open-source cross-platform binary newsreader. It simplifies the process of downloading from Usenet dramatically, thanks to its web-based user interface and advanced built-in post-processing options that automatically verify, repair, extract and clean up posts downloaded from Usenet.

(c) Copyright 2007-2026 by The SABnzbd-Team (sabnzbd.org)

Release Notes - SABnzbd 5.1.0 Beta 2

This is the third beta release of version 5.1. We will probably add (a few) new features in upcoming testing releases, but we already wanted to share the current improvements with you!

New features in 5.1.0

• Refreshed the interface.
• When Retrying a job, only the actually missing articles are tried again. This only works for jobs downloaded in 5.1.0 (or newer).
• RSS-items are now stored in the database instead of on disk.
• Downloaded RSS-items are cleared from RSS-database after 3 days.
• Add support for filename and path pattern matching to the Cleanup List.
• Allow job setting changes directly from Extra queue columns.
• Added support for unpacking .tar files during post-processing.
• Improved anonymization of the logs when using Show Logging.
• New Servers will default to 16 connections instead of 8.
• Use media duration as part of Ignore Samples detection.
• Parsing of header-encrypted RAR's will use significantly less resources.
• Removed redundant INSTALL.txt file.
• Dropped support for Python 3.9.
• Windows and macOS: Updated Python to 3.14.6, Unrar to 7.23 and 7zip to 26.02.

Bug fixes in 5.1.0

• Prevent incorrect warnings about non-writeable directories.
• Files unrelated to job could get removed by the Cleanup List logic.
• Prevent path traversal in orphaned job API's.
• Disk Full errors from unrar were not handled gracefully during unpacking.
• Memory leak could occur during article decoding.
• Windows: Uninstall would not remove Settings or Windows Service.
• Windows: Warn for OS-limit if more than 1024 connections are configured.
• macOS: AppleDouble files could result in failures in Moving stage.
• macOS: Restarting the application resulted in Terminal window.

Upgrade notices

• You can directly upgrade from version 3.0.0 and newer.
• Upgrading from older versions will require performing a Queue repair.
• Downgrading from version 4.2.0 or newer to 3.7.2 or older will require performing a Queue repair due to changes in the internal data format.

Known problems and solutions

• Read ISSUES.txt or https://sabnzbd.org/wiki/introduction/known-issues

Code Signing Policy

Windows code signing is provided by SignPath.io using a SignPath Foundation certificate.

About

SABnzbd is an open-source cross-platform binary newsreader. It simplifies the process of downloading from Usenet dramatically, thanks to its web-based user interface and advanced built-in post-processing options that automatically verify, repair, extract and clean up posts downloaded from Usenet.

(c) Copyright 2007-2026 by The SABnzbd-Team (sabnzbd.org)

Release Notes - SABnzbd 5.1.0 Beta 2

This is the second beta release of version 5.1. We will probably add (a few) new features in upcoming testing releases, but we already wanted to share the current improvements with you!

New features in 5.1.0

• Refreshed the interface.
• When Retrying a job, only the actually missing articles are tried again. This only works for jobs downloaded in 5.1.0 (or newer).
• RSS-items are now stored in the database instead of on disk.
• Downloaded RSS-items are cleared from RSS-database after 3 days.
• Add support for filename and path pattern matching to the Cleanup List.
• Allow job setting changes directly from Extra queue columns.
• Added support for unpacking .tar files during post-processing.
• Improved anonymization of the logs when using Show Logging.
• New Servers will default to 16 connections instead of 8.
• Parsing of header-encrypted RAR's will use significantly less resources.
• Removed redundant INSTALL.txt file.
• Dropped support for Python 3.9.

Bug fixes in 5.1.0

• Prevent incorrect warnings about non-writeable directories.
• Files unrelated to job could get removed by the Cleanup List logic.
• Windows: Uninstall would not remove Settings or Windows Service.
• Windows: Warn for OS-limit if more than 1024 connections are configured.
• macOS: AppleDouble files could result in failures in Moving stage.
• macOS: Restarting the application resulted in Terminal window.

Upgrade notices

• You can directly upgrade from version 3.0.0 and newer.
• Upgrading from older versions will require performing a Queue repair.
• Downgrading from version 4.2.0 or newer to 3.7.2 or older will require performing a Queue repair due to changes in the internal data format.

Known problems and solutions

• Read ISSUES.txt or https://sabnzbd.org/wiki/introduction/known-issues

Code Signing Policy

Windows code signing is provided by SignPath.io using a SignPath Foundation certificate.

About

SABnzbd is an open-source cross-platform binary newsreader. It simplifies the process of downloading from Usenet dramatically, thanks to its web-based user interface and advanced built-in post-processing options that automatically verify, repair, extract and clean up posts downloaded from Usenet.

(c) Copyright 2007-2026 by The SABnzbd-Team (sabnzbd.org)

Release Notes - SABnzbd 5.1.0 Beta 1

This is the first beta release of version 5.1. We will probably add new features in upcoming testing releases, but we already wanted to share the current improvements with you!

New features in 5.1.0

• Refreshed the interface.
• RSS-items are now stored in the database instead of on disk.
• Downloaded RSS-items are cleared from RSS-database after 3 days.
• Add support for filename and path pattern matching to the Cleanup List.
• Allow job setting changes directly from Extra queue columns.
• Added support for unpacking .tar files during post-processing.
• Improved anonymization of the logs when using Show Logging.
• Dropped support for Python 3.9.

Bug fixes in 5.1.0

• Prevent incorrect warnings about non-writeable directories.
• Windows: Uninstall would not remove Settings or Windows Service.
• Windows: Warn for OS-limit if more than 1024 connections are configured.
• macOS: AppleDouble files could result in failures in Moving stage.
• macOS: Restarting the application resulted in Terminal window.

Upgrade notices

• You can directly upgrade from version 3.0.0 and newer.
• Upgrading from older versions will require performing a Queue repair.
• Downgrading from version 4.2.0 or newer to 3.7.2 or older will require performing a Queue repair due to changes in the internal data format.

Known problems and solutions

• Read ISSUES.txt or https://sabnzbd.org/wiki/introduction/known-issues

Code Signing Policy

Windows code signing is provided by SignPath.io using a SignPath Foundation certificate.

About

SABnzbd is an open-source cross-platform binary newsreader. It simplifies the process of downloading from Usenet dramatically, thanks to its web-based user interface and advanced built-in post-processing options that automatically verify, repair, extract and clean up posts downloaded from Usenet.

(c) Copyright 2007-2026 by The SABnzbd-Team (sabnzbd.org)

Release Notes - SABnzbd 5.0.4

In this fifth major release of SABnzbd, we included:

• Smarter (and potentially faster) downloads with NNTP Pipelining and Direct Write.
• Reliability gains from a reworked cache and safer processing.
• A significant number of bug fixes and platform updates.

Features and bug fixes in 5.0.4

• RSS feed modifications no longe require clicking Apply Filters.
• Fixed RSS priority handling.
• Server Test could block the queue.
• Use reduced progress bar width in Compact layout.
• Replaced unreliable directory access check.
• Prevent crash in idle-jobs check.
• Jobs with invalid date would show as Fetching.
• Windows and macOS: Updated Python to 3.14.5 and Unrar to 7.22.

Features and bug fixes in 5.0.1, 5.0.2 and 5.0.3

• Fetching NZB's failed on new installations.
• Queue entries from older versions now load correctly after upgrading.
• nzo_id now uses GUIDs to prevent duplicates.
• Updating to 5.0 now succeeds even when duplicate nzo_id values exist.
• URL fetching no longer crashes when duplicate jobs are present.
• Default RSS priority is now applied correctly.
• Duplicate filenames no longer cause queue stalls.
• IPv6 binding now works correctly for the Web interface.
• The On queue finish action now executes reliably.
• Saving the post-processing queue no longer throws errors.
• Directory creation now handles existing directories gracefully.
• Windows and macOS: Updated Unrar to 7.21 and 7zip to 26.01.

New features in 5.0.0

• Added support for NNTP Pipelining which eliminates idle waiting between requests, significantly improving speeds on high-latency connections. Read more here: https://sabnzbd.org/wiki/advanced/nntp-pipelining New servers will have Articles per request set to 2 by default. Existing servers need to be manually changed to use NNTP Pipelining.
• Implemented Direct Write to optimize assembly of downloaded files. Read more here: https://sabnzbd.org/wiki/advanced/direct-write
• Post-processing scripts will always be executed, even for failed jobs. Make sure to check the status of the job in your scripts!
• Removed Special setting empty_postproc as it is no longer needed.
• Complete redesign of article cache.
• Improved disk speed measurement in Status window.
• Reduced delays between jobs during post-processing.
• Improved handling of disks getting full.
• Diskspace check will now include Category-specific folders.
• If a download only contains .nzb files, the new downloads will include the name of the original download.
• No longer show tracebacks in the browser, only in the logs.
• Dropped support for Python 3.8.
• Windows: Added Windows ARM (portable) release.
• Windows and macOS: Added HTML version of the Release Notes.
• Windows and macOS: Updated Python to 3.14.4, Unrar to 7.20, par2cmdline-turbo to 1.4 and 7zip to 26.00.

Bug fixes in 5.0.0

• Check before download could get stuck or fail to reject.
• Several stability changes for the core download process.
• If only par2 files were missing, jobs could get incorrectly aborted.
• No error was shown in case NZB upload failed.
• Correct mobile layout if Full Width is enabled.
• Handle passwords that exceed Unrar's password limit.
• Aborted Direct Unpack could result in no files being unpacked.
• Encrypted RAR detection could sometimes fail.
• Unwanted extension check was unreliable on passworded downloads.
• No longer exclusively lock all directory operations.
• Improved handling of non-NFC unicode filenames.
• Sorting of files inside jobs was inconsistent.
• Linux: No longer break test-data in the release package.
• Windows: Tray icon disappears after Explorer restart.
• macOS: Slow to start on some network setups.

Changes to default settings for new installations in 5.0.0

• Default Minimum Free Space for Temporary Download Folder set to 500M.
• Enabled verify_xff_header setting by default.

Upgrade notices

• You can directly upgrade from version 3.0.0 and newer.
• Upgrading from older versions will require performing a Queue repair.
• Downgrading from version 4.2.0 or newer to 3.7.2 or older will require performing a Queue repair due to changes in the internal data format.

Known problems and solutions

• Read ISSUES.txt or https://sabnzbd.org/wiki/introduction/known-issues

Code Signing Policy

Windows code signing is provided by SignPath.io using a SignPath Foundation certificate.

About

SABnzbd is an open-source cross-platform binary newsreader. It simplifies the process of downloading from Usenet dramatically, thanks to its web-based user interface and advanced built-in post-processing options that automatically verify, repair, extract and clean up posts downloaded from Usenet.

(c) Copyright 2007-2026 by The SABnzbd-Team (sabnzbd.org)

Release Notes - SABnzbd 5.0.4 Release Candidate 1

In this fifth major release of SABnzbd, we included:

• Smarter (and potentially faster) downloads with NNTP Pipelining and Direct Write.
• Reliability gains from a reworked cache and safer processing.
• A significant number of bug fixes and platform updates.

Features and bug fixes in 5.0.4

• RSS feed modifications no longe require clicking Apply Filters.
• Fixed RSS priority handling.
• Server Test could block the queue.
• Use reduced progress bar width in Compact layout.
• Replaced unreliable directory access check.
• Prevent crash in idle-jobs check.
• Jobs with invalid date would show as Fetching.
• Windows and macOS: Updated Python to 3.14.5 and Unrar to 7.22.

Features and bug fixes in 5.0.1, 5.0.2 and 5.0.3

• Fetching NZB's failed on new installations.
• Queue entries from older versions now load correctly after upgrading.
• nzo_id now uses GUIDs to prevent duplicates.
• Updating to 5.0 now succeeds even when duplicate nzo_id values exist.
• URL fetching no longer crashes when duplicate jobs are present.
• Default RSS priority is now applied correctly.
• Duplicate filenames no longer cause queue stalls.
• IPv6 binding now works correctly for the Web interface.
• The On queue finish action now executes reliably.
• Saving the post-processing queue no longer throws errors.
• Directory creation now handles existing directories gracefully.
• Windows and macOS: Updated Unrar to 7.21 and 7zip to 26.01.

New features in 5.0.0

• Added support for NNTP Pipelining which eliminates idle waiting between requests, significantly improving speeds on high-latency connections. Read more here: https://sabnzbd.org/wiki/advanced/nntp-pipelining New servers will have Articles per request set to 2 by default. Existing servers need to be manually changed to use NNTP Pipelining.
• Implemented Direct Write to optimize assembly of downloaded files. Read more here: https://sabnzbd.org/wiki/advanced/direct-write
• Post-processing scripts will always be executed, even for failed jobs. Make sure to check the status of the job in your scripts!
• Removed Special setting empty_postproc as it is no longer needed.
• Complete redesign of article cache.
• Improved disk speed measurement in Status window.
• Reduced delays between jobs during post-processing.
• Improved handling of disks getting full.
• Diskspace check will now include Category-specific folders.
• If a download only contains .nzb files, the new downloads will include the name of the original download.
• No longer show tracebacks in the browser, only in the logs.
• Dropped support for Python 3.8.
• Windows: Added Windows ARM (portable) release.
• Windows and macOS: Added HTML version of the Release Notes.
• Windows and macOS: Updated Python to 3.14.4, Unrar to 7.20, par2cmdline-turbo to 1.4 and 7zip to 26.00.

Bug fixes in 5.0.0

• Check before download could get stuck or fail to reject.
• Several stability changes for the core download process.
• If only par2 files were missing, jobs could get incorrectly aborted.
• No error was shown in case NZB upload failed.
• Correct mobile layout if Full Width is enabled.
• Handle passwords that exceed Unrar's password limit.
• Aborted Direct Unpack could result in no files being unpacked.
• Encrypted RAR detection could sometimes fail.
• Unwanted extension check was unreliable on passworded downloads.
• No longer exclusively lock all directory operations.
• Improved handling of non-NFC unicode filenames.
• Sorting of files inside jobs was inconsistent.
• Linux: No longer break test-data in the release package.
• Windows: Tray icon disappears after Explorer restart.
• macOS: Slow to start on some network setups.

Changes to default settings for new installations in 5.0.0

• Default Minimum Free Space for Temporary Download Folder set to 500M.
• Enabled verify_xff_header setting by default.

Upgrade notices

• You can directly upgrade from version 3.0.0 and newer.
• Upgrading from older versions will require performing a Queue repair.
• Downgrading from version 4.2.0 or newer to 3.7.2 or older will require performing a Queue repair due to changes in the internal data format.

Known problems and solutions

• Read ISSUES.txt or https://sabnzbd.org/wiki/introduction/known-issues

Code Signing Policy

Windows code signing is provided by SignPath.io using a SignPath Foundation certificate.

About

SABnzbd is an open-source cross-platform binary newsreader. It simplifies the process of downloading from Usenet dramatically, thanks to its web-based user interface and advanced built-in post-processing options that automatically verify, repair, extract and clean up posts downloaded from Usenet.

(c) Copyright 2007-2026 by The SABnzbd-Team (sabnzbd.org)

Release Notes - SABnzbd 5.0.3

In this fifth major release of SABnzbd, we included:

• Smarter (and potentially faster) downloads with NNTP Pipelining and Direct Write.
• Reliability gains from a reworked cache and safer processing.
• A significant number of bug fixes and platform updates.

Features and bug fixes in 5.0.1, 5.0.2 and 5.0.3

• Fetching NZB's failed on new installations.
• Queue entries from older versions now load correctly after upgrading.
• nzo_id now uses GUIDs to prevent duplicates.
• Updating to 5.0 now succeeds even when duplicate nzo_id values exist.
• URL fetching no longer crashes when duplicate jobs are present.
• Default RSS priority is now applied correctly.
• Duplicate filenames no longer cause queue stalls.
• IPv6 binding now works correctly for the Web interface.
• The On queue finish action now executes reliably.
• Saving the post-processing queue no longer throws errors.
• Directory creation now handles existing directories gracefully.
• Windows and macOS: Updated Unrar to 7.21 and 7zip to 26.01.

New features in 5.0.0

• Added support for NNTP Pipelining which eliminates idle waiting between requests, significantly improving speeds on high-latency connections. Read more here: https://sabnzbd.org/wiki/advanced/nntp-pipelining New servers will have Articles per request set to 2 by default. Existing servers need to be manually changed to use NNTP Pipelining.
• Implemented Direct Write to optimize assembly of downloaded files. Read more here: https://sabnzbd.org/wiki/advanced/direct-write
• Post-processing scripts will always be executed, even for failed jobs. Make sure to check the status of the job in your scripts!
• Removed Special setting empty_postproc as it is no longer needed.
• Complete redesign of article cache.
• Improved disk speed measurement in Status window.
• Reduced delays between jobs during post-processing.
• Improved handling of disks getting full.
• Diskspace check will now include Category-specific folders.
• If a download only contains .nzb files, the new downloads will include the name of the original download.
• No longer show tracebacks in the browser, only in the logs.
• Dropped support for Python 3.8.
• Windows: Added Windows ARM (portable) release.
• Windows and macOS: Added HTML version of the Release Notes.
• Windows and macOS: Updated Python to 3.14.4, Unrar to 7.20, par2cmdline-turbo to 1.4 and 7zip to 26.00.

Bug fixes in 5.0.0

• Check before download could get stuck or fail to reject.
• Several stability changes for the core download process.
• If only par2 files were missing, jobs could get incorrectly aborted.
• No error was shown in case NZB upload failed.
• Correct mobile layout if Full Width is enabled.
• Handle passwords that exceed Unrar's password limit.
• Aborted Direct Unpack could result in no files being unpacked.
• Encrypted RAR detection could sometimes fail.
• Unwanted extension check was unreliable on passworded downloads.
• No longer exclusively lock all directory operations.
• Improved handling of non-NFC unicode filenames.
• Sorting of files inside jobs was inconsistent.
• Linux: No longer break test-data in the release package.
• Windows: Tray icon disappears after Explorer restart.
• macOS: Slow to start on some network setups.

Changes to default settings for new installations in 5.0.0

• Default Minimum Free Space for Temporary Download Folder set to 500M.
• Enabled verify_xff_header setting by default.

Upgrade notices

• You can directly upgrade from version 3.0.0 and newer.
• Upgrading from older versions will require performing a Queue repair.
• Downgrading from version 4.2.0 or newer to 3.7.2 or older will require performing a Queue repair due to changes in the internal data format.

Known problems and solutions

• Read ISSUES.txt or https://sabnzbd.org/wiki/introduction/known-issues

Code Signing Policy

Windows code signing is provided by SignPath.io using a SignPath Foundation certificate.

About

SABnzbd is an open-source cross-platform binary newsreader. It simplifies the process of downloading from Usenet dramatically, thanks to its web-based user interface and advanced built-in post-processing options that automatically verify, repair, extract and clean up posts downloaded from Usenet.

(c) Copyright 2007-2026 by The SABnzbd-Team (sabnzbd.org)

Release Notes - SABnzbd 5.0.2

In this fifth major release of SABnzbd, we included:

• Smarter (and potentially faster) downloads with NNTP Pipelining and Direct Write.
• Reliability gains from a reworked cache and safer processing.
• A significant number of bug fixes and platform updates.

Features and bug fixes in 5.0.1 and 5.0.2

• Queue entries from older versions now load correctly after upgrading.
• nzo_id now uses GUIDs to prevent duplicates.
• Updating to 5.0 now succeeds even when duplicate nzo_id values exist.
• URL fetching no longer crashes when duplicate jobs are present.
• Default RSS priority is now applied correctly.
• Duplicate filenames no longer cause queue stalls.
• IPv6 binding now works correctly for the Web interface.
• The On queue finish action now executes reliably.
• Saving the post-processing queue no longer throws errors.
• Directory creation now handles existing directories gracefully.
• Windows and macOS: Updated Unrar to 7.21 and 7zip to 26.01.

New features in 5.0.0

• Added support for NNTP Pipelining which eliminates idle waiting between requests, significantly improving speeds on high-latency connections. Read more here: https://sabnzbd.org/wiki/advanced/nntp-pipelining New servers will have Articles per request set to 2 by default. Existing servers need to be manually changed to use NNTP Pipelining.
• Implemented Direct Write to optimize assembly of downloaded files. Read more here: https://sabnzbd.org/wiki/advanced/direct-write
• Post-processing scripts will always be executed, even for failed jobs. Make sure to check the status of the job in your scripts!
• Removed Special setting empty_postproc as it is no longer needed.
• Complete redesign of article cache.
• Improved disk speed measurement in Status window.
• Reduced delays between jobs during post-processing.
• Improved handling of disks getting full.
• Diskspace check will now include Category-specific folders.
• If a download only contains .nzb files, the new downloads will include the name of the original download.
• No longer show tracebacks in the browser, only in the logs.
• Dropped support for Python 3.8.
• Windows: Added Windows ARM (portable) release.
• Windows and macOS: Added HTML version of the Release Notes.
• Windows and macOS: Updated Python to 3.14.4, Unrar to 7.20, par2cmdline-turbo to 1.4 and 7zip to 26.00.

Bug fixes in 5.0.0

• Check before download could get stuck or fail to reject.
• Several stability changes for the core download process.
• If only par2 files were missing, jobs could get incorrectly aborted.
• No error was shown in case NZB upload failed.
• Correct mobile layout if Full Width is enabled.
• Handle passwords that exceed Unrar's password limit.
• Aborted Direct Unpack could result in no files being unpacked.
• Encrypted RAR detection could sometimes fail.
• Unwanted extension check was unreliable on passworded downloads.
• No longer exclusively lock all directory operations.
• Improved handling of non-NFC unicode filenames.
• Sorting of files inside jobs was inconsistent.
• Linux: No longer break test-data in the release package.
• Windows: Tray icon disappears after Explorer restart.
• macOS: Slow to start on some network setups.

Changes to default settings for new installations in 5.0.0

• Default Minimum Free Space for Temporary Download Folder set to 500M.
• Enabled verify_xff_header setting by default.

Upgrade notices

• You can directly upgrade from version 3.0.0 and newer.
• Upgrading from older versions will require performing a Queue repair.
• Downgrading from version 4.2.0 or newer to 3.7.2 or older will require performing a Queue repair due to changes in the internal data format.

Known problems and solutions

• Read ISSUES.txt or https://sabnzbd.org/wiki/introduction/known-issues

Code Signing Policy

Windows code signing is provided by SignPath.io using a SignPath Foundation certificate.

About

SABnzbd is an open-source cross-platform binary newsreader. It simplifies the process of downloading from Usenet dramatically, thanks to its web-based user interface and advanced built-in post-processing options that automatically verify, repair, extract and clean up posts downloaded from Usenet.

(c) Copyright 2007-2026 by The SABnzbd-Team (sabnzbd.org)

Release Notes - SABnzbd 5.0.2 - Release Candidate 1

In this fifth major release of SABnzbd, we included:

• Smarter (and potentially faster) downloads with NNTP Pipelining and Direct Write.
• Reliability gains from a reworked cache and safer processing.
• A significant number of bug fixes and platform updates.

Features and bug fixes in 5.0.1 and 5.0.2

• Queue entries from older versions now load correctly after upgrading.
• nzo_id now uses GUIDs to prevent duplicates.
• Updating to 5.0 now succeeds even when duplicate nzo_id values exist.
• URL fetching no longer crashes when duplicate jobs are present.
• Default RSS priority is now applied correctly.
• Duplicate filenames no longer cause queue stalls.
• IPv6 binding now works correctly for the Web interface.
• The On queue finish action now executes reliably.
• Saving the post-processing queue no longer throws errors.
• Directory creation now handles existing directories gracefully.
• Windows and macOS: Updated Unrar to 7.21 and 7zip to 26.01.

New features in 5.0.0

• Added support for NNTP Pipelining which eliminates idle waiting between requests, significantly improving speeds on high-latency connections. Read more here: https://sabnzbd.org/wiki/advanced/nntp-pipelining New servers will have Articles per request set to 2 by default. Existing servers need to be manually changed to use NNTP Pipelining.
• Implemented Direct Write to optimize assembly of downloaded files. Read more here: https://sabnzbd.org/wiki/advanced/direct-write
• Post-processing scripts will always be executed, even for failed jobs. Make sure to check the status of the job in your scripts!
• Removed Special setting empty_postproc as it is no longer needed.
• Complete redesign of article cache.
• Improved disk speed measurement in Status window.
• Reduced delays between jobs during post-processing.
• Improved handling of disks getting full.
• Diskspace check will now include Category-specific folders.
• If a download only contains .nzb files, the new downloads will include the name of the original download.
• No longer show tracebacks in the browser, only in the logs.
• Dropped support for Python 3.8.
• Windows: Added Windows ARM (portable) release.
• Windows and macOS: Added HTML version of the Release Notes.
• Windows and macOS: Updated Python to 3.14.4, Unrar to 7.20, par2cmdline-turbo to 1.4 and 7zip to 26.00.

Bug fixes in 5.0.0

• Check before download could get stuck or fail to reject.
• Several stability changes for the core download process.
• If only par2 files were missing, jobs could get incorrectly aborted.
• No error was shown in case NZB upload failed.
• Correct mobile layout if Full Width is enabled.
• Handle passwords that exceed Unrar's password limit.
• Aborted Direct Unpack could result in no files being unpacked.
• Encrypted RAR detection could sometimes fail.
• Unwanted extension check was unreliable on passworded downloads.
• No longer exclusively lock all directory operations.
• Improved handling of non-NFC unicode filenames.
• Sorting of files inside jobs was inconsistent.
• Linux: No longer break test-data in the release package.
• Windows: Tray icon disappears after Explorer restart.
• macOS: Slow to start on some network setups.

Changes to default settings for new installations in 5.0.0

• Default Minimum Free Space for Temporary Download Folder set to 500M.
• Enabled verify_xff_header setting by default.

Upgrade notices

• You can directly upgrade from version 3.0.0 and newer.
• Upgrading from older versions will require performing a Queue repair.
• Downgrading from version 4.2.0 or newer to 3.7.2 or older will require performing a Queue repair due to changes in the internal data format.

Known problems and solutions

• Read ISSUES.txt or https://sabnzbd.org/wiki/introduction/known-issues

Code Signing Policy

Windows code signing is provided by SignPath.io using a SignPath Foundation certificate.

About

SABnzbd is an open-source cross-platform binary newsreader. It simplifies the process of downloading from Usenet dramatically, thanks to its web-based user interface and advanced built-in post-processing options that automatically verify, repair, extract and clean up posts downloaded from Usenet.

(c) Copyright 2007-2026 by The SABnzbd-Team (sabnzbd.org)