# EmEditor changelog > A fast Windows text editor for very large files, CSV and regular expressions. - Vendor: Emurasoft - Category: Developer Tools - Platforms: Windows - Official site: https://www.emeditor.com - Tracked by: What's New (https://whatsnew.fyi/product/emeditor) - Harvested from: Blog (https://www.emeditor.com/feed/) - Entries below: 9 (newest first) What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog. Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'. ## Releases ### v26.2.6 — EmEditor v26.2.6 Released - Date: 2026-08-27 - Version: v26.2.6 - Original notes: https://www.emeditor.com/emeditor-core/emeditor-v26-2-6-released/ - Permalink: https://whatsnew.fyi/product/emeditor/releases/v26.2.6 - Labels: Platforms: Windows EmEditor v26.2.6 is now available. This release focuses on stability and includes the fixes and improvements listed below. We recommend updating to the latest version for the best experience. If you u… - **removed** — Remove the Associate with EmEditor button from the File page of the Customize dialog in the Microsoft Store and MSIX versions - **fixed** — Fix an issue where the status bar did not display Help messages when menu commands were selected - **changed** — Improve the message shown when EmEditor crashes because of an ATOK-related issue - **changed** — Improve the performance of the WordComplete plug-in - **changed** — Improve syntax coloring performance when files contain very long lines - **fixed** — Fix various crashes, including crashes that could occur in low-memory situations EmEditor v26.2.6 is now available. This release focuses on stability and includes the fixes and improvements listed below. We recommend updating to the latest version for the best experience. - Removed the Associate with EmEditor button from the File page of the Customize dialog in the Microsoft Store and MSIX versions. - Fixed an issue where the status bar did not display Help messages when menu commands were selected. - Improved the message shown when EmEditor crashes because of an ATOK-related issue. - Improved the performance of the WordComplete plug-in. - Improved syntax coloring performance when files contain very long lines. - Fixed various crashes, including crashes that could occur in low-memory situations. If you use the legacy MSI installer, select Help > Check for Updates to update EmEditor. If the update does not complete successfully, please download the latest version and run the installer manually. If you download the MSI installer directly, please verify that its digital signature is issued by Emurasoft, Inc. We recommend using the Microsoft Store version or the new MSIX installer. Updates for the legacy MSI installer are currently scheduled to end in March 2027. For more information, see FAQ: Store Version and New Installer (MSIX). ### v26.2.5 — EmEditor v26.2.5 Released - Date: 2026-08-01 - Version: v26.2.5 - Original notes: https://www.emeditor.com/emeditor-core/emeditor-v26-2-5-released/ - Permalink: https://whatsnew.fyi/product/emeditor/releases/v26.2.5 - Labels: Platforms: Windows EmEditor v26.2.5 is now available. This release focuses on stability and includes the fixes and improvements below. We recommend updating to the latest version for the best experience. If you use the… - **fixed** — Fixed an issue with the Open command when document tabs are disabled - **fixed** — Fixed an issue where automatic updates for the Microsoft Store and MSIX versions did not work while the tray icon was running - **fixed** — Fixed a potential crash after changing options on the History page of the Customize dialog box - **fixed** — Fixed some UI elements related to Dark Mode EmEditor v26.2.5 is now available. This release focuses on stability and includes the fixes and improvements below. We recommend updating to the latest version for the best experience. - Fixed an issue with the Open command when document tabs are disabled. - Fixed an issue where automatic updates for the Microsoft Store and MSIX versions did not work while the tray icon was running. - Fixed a potential crash after changing options on the History page of the Customize dialog box. - Fixed some UI elements related to Dark Mode. If you use the legacy MSI installer, select Help > Check for Updates to update EmEditor. If the update does not complete successfully, please download the latest version and run the installer manually. The Microsoft Store version is expected to be available within the next few days. If you download the MSI installer directly, please verify that its digital signature is issued by Emurasoft, Inc. We recommend using the Microsoft Store version or the new MSIX installer. Updates for the legacy MSI installer are currently scheduled to end in March 2027. For more information, see FAQ: Store Version and New Installer (MSIX). ### v26.2.4 — EmEditor v26.2.4 Released - Date: 2026-07-29 - Version: v26.2.4 - Original notes: https://www.emeditor.com/emeditor-core/emeditor-v26-2-4-released/ - Permalink: https://whatsnew.fyi/product/emeditor/releases/v26.2.4 - Labels: Platforms: Windows EmEditor v26.2.4 is now available. This release focuses on stability and includes the fixes and improvements below. We recommend updating to the latest version for the best experience. If you use the… - **fixed** — Fixed a potential crash when opening multiple files simultaneously - **fixed** — Fixed an issue introduced in v26.2.1 where it might not be possible to send an entire very large document to an external tool's standard input - **changed** — Store and MSIX editions no longer include local Help in the package, consistent with other editions - **fixed** — Fixed the icon background color for the Store and MSIX editions - **fixed** — Fixed some UI issues related to Dark Mode EmEditor v26.2.4 is now available. This release focuses on stability and includes the fixes and improvements below. We recommend updating to the latest version for the best experience. - Fixed a potential crash when opening multiple files simultaneously. - Fixed an issue introduced in v26.2.1 where it might not be possible to send an entire very large document to an external tool’s standard input. - To reduce download and installation failures, the Store and MSIX editions no longer include local Help in the package, consistent with other editions. If you need local Help, please download and install the separate Local Help installer. - Fixed the icon background color for the Store and MSIX editions. - Fixed some UI issues related to Dark Mode. If you use the legacy MSI installer, select Help > Check for Updates to update EmEditor. If the update does not complete successfully, please download the latest version and run the installer manually. The Microsoft Store version is expected to be available within the next few days. If you download the MSI installer directly, please verify that its digital signature is issued by Emurasoft, Inc. We recommend using the Microsoft Store version or the new MSIX installer. Updates for the legacy MSI installer are currently scheduled to end in March 2027. For more information, see FAQ: Store Version and New Installer (MSIX). ### v26.2.3 — EmEditor v26.2.3 Released - Date: 2026-07-21 - Version: v26.2.3 - Original notes: https://www.emeditor.com/emeditor-core/emeditor-v26-2-3-released/ - Permalink: https://whatsnew.fyi/product/emeditor/releases/v26.2.3 - Labels: Platforms: Windows EmEditor v26.2.3 is now available. This release focuses on stability and includes the fixes and improvements below. We recommend updating to the latest version for the best experience. If you use the… - **fixed** — Fixed an issue that could cause the wrap mode to change to No Wrap after opening a file - **fixed** — Fixed a potential crash when starting EmEditor while checking for conflicts with other versions - **fixed** — Fixed an issue with Markdown/HTML style updates EmEditor v26.2.3 is now available. This release focuses on stability and includes the fixes and improvements below. We recommend updating to the latest version for the best experience. - Fixed an issue that could cause the wrap mode to change to No Wrap after opening a file. - Fixed a potential crash when starting EmEditor while checking for conflicts with other versions. - Fixed an issue with Markdown/HTML style updates. If you use the legacy MSI installer, select Help > Check for Updates to update EmEditor. If the update does not complete successfully, please download the latest version and run the installer manually. The Microsoft Store version is expected to be available within the next few days. If you download the MSI installer directly, please verify that its digital signature is issued by Emurasoft, Inc. We recommend using the Microsoft Store version or the new MSIX installer. Updates for the legacy MSI installer are currently scheduled to end in March 2027. For more information, see FAQ: Store Version and New Installer (MSIX). ### v26.2.2 — EmEditor v26.2.2 Released - Date: 2026-07-17 - Version: v26.2.2 - Original notes: https://www.emeditor.com/emeditor-core/emeditor-v26-2-2-released/ - Permalink: https://whatsnew.fyi/product/emeditor/releases/v26.2.2 - Labels: Platforms: Windows EmEditor v26.2.2 is now available. This release focuses on stability and includes the fixes and improvements listed below. We recommend updating to the latest version for the best experience. If you u… - **fixed** — Fixed a possible crash immediately after opening a file - **fixed** — Fixed the opening dialog in Store and MSIX versions EmEditor v26.2.2 is now available. This release focuses on stability and includes the fixes and improvements listed below. We recommend updating to the latest version for the best experience. - Fixed a possible crash immediately after opening a file. - Fixed the opening dialog in Store and MSIX versions. If you use the Desktop Installer edition, select Help > Check for Updates to update EmEditor. If the update does not work, please download the latest version and run the installer manually. The Microsoft Store version is expected to become available within the next few days. If you download the MSI file directly, please verify that its digital signature is signed by Emurasoft, Inc. ### v26.2.1 — EmEditor v26.2.1 Released - Date: 2026-07-16 - Version: v26.2.1 - Original notes: https://www.emeditor.com/emeditor-core/emeditor-v26-2-1-released/ - Permalink: https://whatsnew.fyi/product/emeditor/releases/v26.2.1 - Labels: Platforms: Windows EmEditor v26.2.1 is now available. This release focuses on stability and includes the fixes and improvements listed below. We recommend updating to the latest version for the best experience. If you u… - **added** — MSIX versions are now available through both direct download and the Microsoft Store - **fixed** — Fixed an issue where search highlighting did not work after reloading a file - **fixed** — Fixed a potential crash that could occur when opening more than 2,000 files with line wrapping enabled - **changed** — Improved performance when opening many files from the command line - **changed** — New versions skip the InstallTypeLibrary call during MSI installation - **fixed** — Fixed an issue that prevented Properties for All Configurations from being selected after using Reset All Settings - **fixed** — Fixed a phantom taskbar icon that appeared when selecting Edit with EmEditor from the Windows 11 context menu - **fixed** — Fixed a printing color issue when Windows dark mode is enabled - **changed** — Reduced errors that could occur while verifying digital signatures when loading files - **security** — EmEditor will no longer load itself or DLL files unless they are digitally signed by Emurasoft, Inc. - **fixed** — Fixed a potential out-of-memory crash when using Select All - **fixed** — Fixed an issue on the Toolbar Buttons page of the Customize dialog box - **changed** — Disabled double-clicking on the AutoRepeat handle EmEditor v26.2.1 is now available. This release focuses on stability and includes the fixes and improvements listed below. We recommend updating to the latest version for the best experience. - MSIX versions are now available through both direct download and the Microsoft Store. - Fixed an issue where search highlighting did not work after reloading a file. - Fixed a potential crash that could occur when opening more than 2,000 files with line wrapping enabled. - Improved performance when opening many files from the command line. - The new versions skip the InstallTypeLibrary call during MSI installation. - Fixed an issue that prevented Properties for All Configurations from being selected after using Reset All Settings. - Fixed a phantom taskbar icon that appeared when selecting Edit with EmEditor from the Windows 11 context menu. - Fixed a printing color issue when Windows dark mode is enabled. - Reduced errors that could occur while verifying digital signatures when loading files. - EmEditor will no longer load itself or DLL files unless they are digitally signed by Emurasoft, Inc. - Fixed a potential out-of-memory crash when using Select All. - Fixed an issue on the Toolbar Buttons page of the Customize dialog box. - Disabled double-clicking on the AutoRepeat handle. If you use the Desktop Installer edition, select Help > Check for Updates to update EmEditor. If the update does not work, please download the latest version and run the installer manually. The Microsoft Store version is expected to become available within the next few days. If you download the MSI file directly, please verify that its digital signature is signed by Emurasoft, Inc. ### v26.2.0 — EmEditor v26.2.0 Released — Enhanced AI Features, Introduction of MSIX Technology, and Faster Performance - Date: 2026-06-30 - Version: v26.2.0 - Original notes: https://www.emeditor.com/emeditor-core/emeditor-v26-2-0-released-enhanced-ai-features-introduction-of-msix-technology-and-faster-performance/ - Permalink: https://whatsnew.fyi/product/emeditor/releases/v26.2.0 - Labels: Platforms: Windows Today, we released EmEditor v26.2.0. 1. Enhanced AI Features In this version, we enhanced the highly requested AI-related features. As in previous versions, the AI-related features fall into two main… - **added** — Support for additional AI providers including Anthropic, DeepSeek, Google, and LM Studio/OpenAI-compatible providers in AI Writing Assistance - **added** — Option to show additional information on status bar when prompts are sent to AI or responses are received - **added** — Option to show AI suggestions only when confident with adjustable confidence level slider - **added** — Temperature control for AI text generation to adjust randomness and creativity of suggestions - **added** — Option to prevent AI suggestions after specified end-of-sentence characters - **added** — Adjustable delay time for automatic AI suggestions in milliseconds - **added** — Additional instructions field to customize AI suggestion behavior and tone - **added** — Ability to specify two or more AI providers or models for each AI Prompt to compare responses - **changed** — AI Writing Assistance now supports multiple AI providers instead of only OpenAI Today, we released EmEditor v26.2.0. ##### 1. Enhanced AI Features In this version, we enhanced the highly requested AI-related features. As in previous versions, the AI-related features fall into two main categories. ###### 1-1. AI Writing Assistance AI Writing Assistance, first introduced in v24.1, has been further enhanced with the following additional options. - Customize dialog > AI Options - AI Provider and Model: Previously, AI-assisted writing could use only OpenAI, but starting with this version, you can also select Anthropic, DeepSeek, Google, and LM Studio/OpenAI-compatible providers. For example, by using a local LLM through LM Studio, you can enjoy the benefits of AI-assisted writing without worrying about AI usage costs. When using a paid AI provider that requires an API key, you must specify the API key in advance under Settings in Chat with AI. - Show additional information on status bar: When this option is turned on, information is shown on the status bar whenever a prompt is sent to the AI or a response is received. - Configuration Properties > AI Assist - Show suggestions only when confident: If you do not want to receive AI suggestions too frequently, you can check this option to show suggestions only when the AI is confident. When this is checked, you can use the Confidence level slider below it to set the minimum confidence level required to display a suggestion. Because judging confidence is difficult for AI, and some AI models may not interpret it correctly, we recommend turning this off if you do not need it. - Set the temperature: In AI, temperature is a parameter that controls the “randomness (creativity)” used when the LLM chooses the next word while generating text. The lower the temperature, the lower the randomness, and the more deterministic the suggestions you receive. The higher the temperature, the higher the randomness, and the more creative the suggestions you receive. When the Set the temperature option is off, the model’s default temperature is always used. When it is on, a temperature of 0.0 is used initially so that you receive deterministic suggestions; however, when you press Ctrl + Space to request a different suggestion, the temperature is raised to produce more creative suggestions. Many recent reasoning models do not accept a temperature parameter, in which case this option is ignored. If an error appears on the status bar because the temperature cannot be set for a particular model, please turn this option off. For AI-assisted writing, we recommend specifying a lightweight model that returns responses quickly, rather than a reasoning model. - Don’t show suggestions after any of the following: If you check this and enter characters that indicate the end of a sentence in the field below—for example, “.。”—suggestions will no longer appear after symbols such as “.” or “。”. This lets you tailor the feature for easy use according to the type of text you are editing. - Delay Time: AI suggestions appear automatically after the specified amount of time has elapsed once typing stops and the editor becomes idle. You can adjust this delay time in milliseconds using the slider. - Additional instructions: Here, you can add instructions such as what kind of suggestions you want to receive, which language to use, and the desired tone. For example, when writing code in JavaScript, you can specify “Use JavaScript,” and if you want to use polite language, you can specify “Write in a polite style.” However, depending on the AI model, these additional instructions may not always be fully understood or produce an appropriate response, and entering too many instructions may slow down the response. Even so, now that more customization is possible, we believe you will be able to fine-tune the behavior to your liking through trial and error. ###### 1-2. AI Prompts This version enhances the AI Prompts feature, which was first introduced in v24.3. With AI Prompts, you can write a question to the AI in the _[Truncated at 4000 characters — full notes: https://www.emeditor.com/emeditor-core/emeditor-v26-2-0-released-enhanced-ai-features-introduction-of-msix-technology-and-faster-performance/]_ ### v26.2 — EmEditor v26.2 preview released - Date: 2026-06-25 - Version: v26.2 - Original notes: https://www.emeditor.com/emeditor-preview/emeditor-v26-2-preview-released/ - Permalink: https://whatsnew.fyi/product/emeditor/releases/v26.2 - Labels: Platforms: Windows This message contains changelog regarding v26.2 preview. The information is being updated as more preview versions are released. To update If you use the installer version, please select Customize Upd… - **added** — AI-Assisted Writing feature now supports additional AI providers including Anthropic, DeepSeek, Google, and LM Studio/OpenAI-compatible providers - **added** — AI Prompts now allow selecting a second provider/model to send the same prompt to two AIs simultaneously and compare responses in a split view - **added** — Provider drop-down list box on the AI Options page of the Customize dialog box - **added** — Set Second Provider/Model checkbox, Provider 2 checkbox and drop-down list box, and Model 2 checkbox and drop-down list box on the AI Prompts page of the Customize dialog box - **added** — AI-Assisted Writing command and button on the AI toolbar to enable or disable AI-assisted writing - **added** — Language/Icon options to the Start dialog - **added** — Show language/icon options check box to the Customize Start Window dialog box - **added** — Show suggestions only with Ctrl+Space, Show suggestions only when confident, and Set the temperature checkboxes to the AI Assist page of configuration properties - **added** — Don't show suggestions after any of the following checkbox and text box, Delay time slider, and Additional instructions text box to the AI Assist page of configuration properties - **added** — Show additional information on status bar check box on the AI Options page of the Customize dialog box - **changed** — Run macros asynchronously by default option is now turned off by default - **changed** — Syntax checker is now disabled while a macro is running - **changed** — Default File Access Timeout value changed to 5 seconds - **changed** — Documents now print in light color even when Dark Mode is turned on - **removed** — HD and Vivid checkboxes from the AI Prompts page of the Customize dialog box - **fixed** — Regular expressions containing backslashes might not work correctly in case-insensitive searches - **fixed** — Extract command in the Find dialog box could output text always in lowercase under certain conditions - **fixed** — Crash that could occur in Dark Mode - **fixed** — Regular expression search issue involving a backslash under certain conditions - **fixed** — Issues with AI-assisted writing for specific AI models - **security** — EmEditor now displays a notification message at startup if it detects a different version of EmEditor This message contains changelog regarding v26.2 preview. The information is being updated as more preview versions are released. ###### To update If you use the installer version, please select Customize Update Checker on the Help menu, and set the Include preview versions in order to update automatically to future preview versions. Preview versions are also available from the links below or on the Previous Versions page. ###### Direct Downloads - EmEditor installer (MSI) - ChatAI plugin installer (MSI) Note: After downloading, please verify that the digital signature is signed by “Emurasoft, Inc.” Notes: The preview version supports only Japanese and English (United States). In other languages, new features may not be available. Please contact us for any questions or comments. Thank you for trying EmEditor preview! ###### preview 1 (26.1.901) – June 3, 2026 ###### General New Features - The AI-Assisted Writing feature now supports additional AI providers, including Anthropic, DeepSeek, Google, and LM Studio/OpenAI-compatible providers, in addition to the existing OpenAI support. This feature requires the Chat with AI plug-in. [P] - AI Prompts now allow you to select a second provider/model, so you can send the same prompt to two AIs at the same time. You can also compare the responses from the two AIs side by side in a split view. This feature requires the Chat with AI plug-in. [P] ###### New Options - Added a Provider drop-down list box to the AI Options page of the Customize dialog box. [P] - Added the Set Second Provider/Model checkbox, the Provider 2 checkbox and drop-down list box, and the Model 2 checkbox and drop-down list box to the AI Prompts page of the Customize dialog box. [P] ###### New Macro Features [P] - The Run macros asynchronously by default option on the Options page of the Customize Macros dialog box is now turned off by default. - The syntax checker is now disabled while a macro is running. ###### Bug Fixes - Fixed an issue where certain regular expressions containing backslashes might not work correctly in case-insensitive searches. - Fixed an issue where the Extract command in the Find dialog box could output text always in lowercase under certain conditions. ###### preview 2 (26.1.902) – June 9, 2026 - Added the AI-Assisted Writing command. Added the AI-Assisted Writing command button to the AI toolbar to enable or disable the AI-assisted writing. [P] - Removed the HD and Vivid checkboxes from the AI Prompts page of the Customize dialog box. [P] - Added the Show suggestions only with Ctrl+Space, Show suggestions only when confident, and Set the temperature checkboxes, Don’t show suggestions after any of the following checkbox and text box, the Delay time slider, and Additional instructions text box to the AI Assist page of configuration properties. [P] ###### preview 3 (26.1.903) – June 11, 2026 - Fixed a crash that could occur in Dark Mode in Preview 2. [P] ###### preview 4 (26.1.904) – June 18, 2026 - Added Language/Icon options to the Start dialog. [PF] - Added a Show language/icon options check box to the Customize Start Window dialog box. [PF] - Changed the default File Access Timeout value to 5 seconds. [P] - EmEditor now displays a notification message at startup if it detects a different version of EmEditor. [PF] - Fixed a Preview 3 issue related to AI prompts. [P] ###### preview 5 (26.1.905) – June 22, 2026 - The new version prints documents in light color even when Dark Mode is turned on. [PF] - Fixed a regular expression search issue involving a backslash under certain conditions. [PF] - Fixed issues with AI-assisted writing for specific AI models. [P] ###### preview 6 (26.1.906) – June 25, 2026 - Disabled AI model reasoning for AI-assisted writing. [P] - Added the Show additional information on status bar check box to the AI Options page of the Customize dialog box. [P] Notes - [P] EmEditor Professional only - [PF] EmEditor Professional and EmEditor Free ### v26.1.1 — EmEditor v26.1.1 Released - Date: 2026-05-30 - Version: v26.1.1 - Original notes: https://www.emeditor.com/emeditor-core/emeditor-v26-1-1-released/ - Permalink: https://whatsnew.fyi/product/emeditor/releases/v26.1.1 - Labels: Platforms: Windows EmEditor v26.1.1 is now available. This update focuses on stability and includes the fixes and improvements listed below. We recommend updating to the latest version for the best experience. If you us… - **fixed** — Fixed an issue where the scroll position might not be restored when restoring a workspace - **changed** — Improved the behavior when toggling word wrap - **changed** — Improved comparison behavior while editing - **fixed** — Fixed an issue where EmEditor could crash when loading corrupted settings - **added** — Enabled the Move Line Up and Move Line Down commands in Markdown Design View - **changed** — Updated the dialog box UI - **fixed** — Fixed the Find toolbar UI in dark mode - **changed** — Improved the behavior when using LM Studio/OpenAI compatible with the Chat with AI plugin - **changed** — Chat with AI now uses the proxy settings from Customize Proxy to download the app and for AI requests EmEditor v26.1.1 is now available. This update focuses on stability and includes the fixes and improvements listed below. We recommend updating to the latest version for the best experience. - Fixed an issue in v26.1.0 where the scroll position might not be restored when restoring a workspace. - Improved the behavior when toggling word wrap. - Improved comparison behavior while editing. - Fixed an issue where EmEditor could crash when loading corrupted settings. - Enabled the Move Line Up and Move Line Down commands in Markdown Design View. - Updated the dialog box UI. - Fixed the Find toolbar UI in dark mode. - Improved the behavior when using LM Studio/OpenAI compatible with the Chat with AI plugin. - Chat with AI now uses the proxy settings from Customize Proxy to download the app. AI requests also use the proxy settings. If you use the Desktop Installer edition, you can update EmEditor by selecting Help > Check for Updates. If the update does not work, please download the latest version and run the installer. The Microsoft Store version is expected to be available in the next few days. If you download the MSI file directly, please confirm that the digital signature is signed by Emurasoft, Inc.