# electron-builder 27.0.0-alpha.8 - Product: electron-builder (https://whatsnew.fyi/product/electron-builder) - Vendor: electron-builder - Date: 2026-09-02 - Version: 27.0.0-alpha.8 - Original notes: https://github.com/electron-userland/electron-builder/releases/tag/electron-builder%4027.0.0-alpha.8 - Permalink: https://whatsnew.fyi/product/electron-builder/releases/27.0.0-alpha.8 - Labels: Pre-release 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'. --- - **fixed** — Run PowerShell with -NoProfile -NonInteractive in allowOnlyOneInstallerInstance checks for NSIS - **fixed** — Detect running app in previous install locations when checking/closing processes for NSIS - **fixed** — Emit afterSign hook for mas/mas-dev builds - **fixed** — Bump linux-tools-mac toolset to 1.0.1 for macOS 15+ and stop mangling custom toolset URLs - **fixed** — Only log that a file was signed if it actually was - **fixed** — Default the uninstall-failure dialog in silent NSIS installs to prevent auto-update hangs - **fixed** — Exclude slnx files - **fixed** — Retry Electron/binaries downloads on transient errors; cache Windows toolset and self-heal the Electron zip cache - **fixed** — Pass the keychain password to security set-key-partition-list for macOS signing - **fixed** — Return sign result instead of boolean from windows signing chain in app-builder-lib - **fixed** — Update 7zip toolset to 1.0.1 with correct per-arch Windows binaries - **fixed** — Preserve Yarn Berry registry credentials - **fixed** — Expand lower channels when channel name has a suffix in app-builder-lib - **fixed** — Report the repository detected for app-update.yml at build time - **fixed** — Remove http-parser from default pacman depends; support "default" keyword in depends for Linux - **security** — Update Electron to v39.8.10 ##### What's Changed * fix(nsis): run PowerShell with -NoProfile -NonInteractive in allowOnlyOneInstallerInstance checks by @claude[bot] in https://github.com/electron-userland/electron-builder/pull/10051 * fix(nsis): detect running app in previous install locations when checking/closing processes by @claude[bot] in https://github.com/electron-userland/electron-builder/pull/10024 * fix: emit afterSign hook for mas/mas-dev builds by @claude[bot] in https://github.com/electron-userland/electron-builder/pull/10071 * fix(mac): bump linux-tools-mac toolset to 1.0.1 (macOS 15+) and stop mangling custom toolset URLs by @claude[bot] in https://github.com/electron-userland/electron-builder/pull/10100 * fix: Only logs that we've signed a file if we actually did by @DiefBell in https://github.com/electron-userland/electron-builder/pull/10082 * fix(nsis): default the uninstall-failure dialog in silent installs so auto-update cannot hang by @claude[bot] in https://github.com/electron-userland/electron-builder/pull/10034 * chore(deps): update dependency electron to v39.8.10 [security] by @renovate[bot] in https://github.com/electron-userland/electron-builder/pull/10069 * fix: exclude slnx files by @redwyre in https://github.com/electron-userland/electron-builder/pull/9969 * fix: retry Electron/binaries downloads on transient errors; cache Windows toolset and self-heal the Electron zip cache by @claude[bot] in https://github.com/electron-userland/electron-builder/pull/10105 * fix(mac): pass the keychain password to security set-key-partition-list by @amwyygyuge in https://github.com/electron-userland/electron-builder/pull/10101 * fix(app-builder-lib): return sign result instead of boolean from windows signing chain by @claude[bot] in https://github.com/electron-userland/electron-builder/pull/10104 * fix: update 7zip toolset to 1.0.1 with correct per-arch Windows binaries by @claude[bot] in https://github.com/electron-userland/electron-builder/pull/10103 * fix: preserve Yarn Berry registry credentials by @atirna in https://github.com/electron-userland/electron-builder/pull/10079 * docs(website): self-contained multi-version site build — one container composes / and /v26/ via RELEASE_TAGS by @claude[bot] in https://github.com/electron-userland/electron-builder/pull/10089 * test: internalize updater test suite (localhost fixtures, offline provider tests, no token gates) by @claude[bot] in https://github.com/electron-userland/electron-builder/pull/10110 * docs: fix broken documentation links by @claude[bot] in https://github.com/electron-userland/electron-builder/pull/10111 * fix(app-builder-lib): expand lower channels when channel name has a suffix by @ylkhayat in https://github.com/electron-userland/electron-builder/pull/9998 * chore(deps): update dotenv and dotenv-expand by @mmaietta in https://github.com/electron-userland/electron-builder/pull/9968 * fix(publish): report the repository detected for app-update.yml at build time by @maximilliangrand in https://github.com/electron-userland/electron-builder/pull/10081 * fix(linux): remove http-parser from default pacman depends; support "default" keyword in depends by @claude[bot] in https://github.com/electron-userland/electron-builder/pull/10109 * docs: update CONTRIBUTING.md by @mmaietta in https://github.com/electron-userland/electron-builder/pull/10156 * chore(CI): auto-label PRs targeting backports to release/v26 by @mmaietta in https://github.com/electron-userland/electron-builder/pull/10158 * chore(deploy): Release (next) (alpha) by @electron-builder-release-bot[bot] in https://github.com/electron-userland/electron-builder/pull/10096 ##### New Contributors * @DiefBell made their first contribution in https://github.com/electron-userland/electron-builder/pull/10082 * @redwyre made their first contribution in https://github.com/electron-userland/electron-builder/pull/9969 * @amwyygyuge made their first contribution in https://github.com/electron-userland/electr _[Truncated at 4000 characters — full notes: https://github.com/electron-userland/electron-builder/releases/tag/electron-builder%4027.0.0-alpha.8]_