Release Notes for v40.0.0

Stack Upgrades

• Chromium 144.0.7559.60
  • New in 144
  • New in 143
• Node v24.11.1
  • Node 24.11.1 blog post
• V8 14.4

Breaking Changes

• Deprecated clipboard API access from renderer processes #48923
• Fixed an error on debug symbol upload by moving dsym.zip to use tar.xz compression. #48952

Features

Additions

• Added "memory-eviction" as a possible reason for a child process to exit. #48362
• Added RGBAF16 output format with scRGB HDR color space support to Offscreen Rendering. #48265 ^{(Also in 39)}
• Added app.isHardwareAccelerationEnabled(). #47614 ^{(Also in 37, 38, 39)}
• Added bypassCustomProtocolHandlers option to net.request. #48883 ^{(Also in 38, 39)}
• Added methods to enable more granular accessibility support management. #48042 ^{(Also in 37, 38, 39)}
• Added support for WebSocket authentication through the login event on webContents. #49064 ^{(Also in 39)}
• Added support to import external shared texture as VideoFrame. #48831
• Added the ability to retrieve the system accent color on Linux using systemPreferences.getAccentColor. #48027 ^{(Also in 39)}
• Allowed for persisting File System API grant status within a given session. #48170 ^{(Also in 37, 38, 39)}
• Automatically focus DevTools when element is inspected or breakpoint is triggered. #46386 ^{(Also in 37, 38, 39)}

Improvements

• Enables resetting accent color to follow system accent settings if a previous color has been set via window.setAccentColor(null). #48274 ^{(Also in 38, 39)}
• Support dynamic ESM imports in non-context isolated preloads. #48375 ^{(Also in 37, 38, 39)}
• Updated nativeImage.createFromNamedImage to support SF Symbol names. #48772 ^{(Also in 39)}

Fixes

• Added support for --no-stdio-init to be used when nul device is disabled on windows. #47870
• Fixed an issue on Windows and Linux where no cookie encryption key provider was passed into the network service when cookie encryption was enabled. #49375
• Fixed an issue where no cookie encryption provider was passed into the network service when cookie encryption was enabled. #49350
• Fixed crash when attempting to resolve modules during process exit. #49104
• Fixed drag regions in child windows. #49312
• Fixed draw smoothing round corner issue. #48782
• Fixed the cookie encryption logic to use the old os_crypt sync implementation present in M142. #49384
• Fixed visual artifacts while resizing a window on Windows. #49191

Also in earlier versions...

• AccentColor set distinguishes the frame. #48405 ^{(Also in 37, 38, 39)}
• Corrected the appearance of tiled windows on GNOME (when frame: true), and removed resize handles from tiled edges. #48835 ^{(Also in 38, 39)}
• Fix: ESM-from-CJS import when CJK characters are in path. #48862 ^{(Also in 39)}
• Fix: runtime JS error that crashes GetPackageJSON. #48293 ^{(Also in 37, 38, 39)}
• Fixed Wayland configuration through the XDG_SESSION_TYPE environment variable. #48301 ^{(Also in 38, 39)}
• Fixed Windows dialog.showMessageBox default button handling. #48216 ^{(Also in 36, 37, 38, 39)}
• Fixed a Windows notification issue where clicking a native notification would result in an application hang on certain Windows environments. #49129 ^{(Also in 39)}
• Fixed a potential crash in dialog.showOpenDialog on Windows with an empty extension filter array. #48640 ^{(Also in 37, 38, 39)}
• Fixed an application crash when clicking or hovering over the native MacOS "Window" menu. Reverts #48598. #48799 ^{(Also in 37, 38, 39)}
• Fixed an error when checking environmental variables when using remote checksums when installing Electron via npm. #48634 ^{(Also in 37, 38, 39)}
• Fixed an issue that menu items on macOS could not be disabled under all circumstances. #48598 ^{(Also in 37, 38, 39)}
• Fixed an issue where menu-did-close was not emitted properly for some application menus. #49092 ^{(Also in 38, 39)}
• Fixed an issue where shell.openExternal caused an unexpected dialog to open when there was no app suitable to open the url. #48502 ^{(Also in 38, 39)}
• Fixed an issue where systemPreferences.getAccentColor inverted the color. #48511 ^{(Also in 37, 38, 39)}
• Fixed an issue where trafficLightPosition would not be correctly applied when using titleBarStyle: 'customButtonsOnHover' on macOS 26. #48538 ^{(Also in 37, 38, 39)}
• Fixed an issue where authentication via websockets can crash. #48510 <sup...

Note: This is a beta release. Please file new issues for any bugs you find in it.

This release is published to npm under the beta tag and can be installed via npm install electron@beta, or npm install electron@40.0.0-beta.9.

Release Notes for v40.0.0-beta.9

Fixes

• Fixed the cookie encryption logic to use the old os_crypt sync implementation present in M142. #49384

Other Changes

• Updated Chromium to 144.0.7559.60. #49380

Note: This is a beta release. Please file new issues for any bugs you find in it.

This release is published to npm under the beta tag and can be installed via npm install electron@beta, or npm install electron@40.0.0-beta.8.

Release Notes for v40.0.0-beta.8

Features

• Added support for WebSocket authentication through the login event on webContents. #49064

Fixes

• Fixed an issue on Windows and Linux where no cookie encryption key provider was passed into the network service when cookie encryption was enabled. #49375

Note: This is a beta release. Please file new issues for any bugs you find in it.

This release is published to npm under the beta tag and can be installed via npm install electron@beta, or npm install electron@40.0.0-beta.7.

Release Notes for v40.0.0-beta.7

Fixes

• Fixed an issue where no cookie encryption provider was passed into the network service when cookie encryption was enabled. #49350

Note: This is a beta release. Please file new issues for any bugs you find in it.

This release is published to npm under the beta tag and can be installed via npm install electron@beta, or npm install electron@40.0.0-beta.6.

Release Notes for v40.0.0-beta.6

Fixes

• Fixed drag regions in child windows. #49312
• Fixed visual artifacts while resizing a window on Windows. #49191
• Requests sent via net are now capable of having their headers modified to use reserved headers via webRequest. #49241 ^{(Also in 39)}

Other Changes

• Updated Chromium to 144.0.7559.31. #48958

Note: This is a beta release. Please file new issues for any bugs you find in it.

This release is published to npm under the beta tag and can be installed via npm install electron@beta, or npm install electron@40.0.0-beta.5.

Release Notes for v40.0.0-beta.5

Other Changes

• Backported fix for 466786677. #49286

Note: This is a beta release. Please file new issues for any bugs you find in it.

This release is published to npm under the beta tag and can be installed via npm install electron@beta, or npm install electron@40.0.0-beta.4.

Release Notes for v40.0.0-beta.4

Other Changes

• Backported fix for chromium:466192044. #49201

Release Notes for v39.2.7

Other Changes

• Updated Chromium to 142.0.7444.235. #49190

Note: This is a beta release. Please file new issues for any bugs you find in it.

This release is published to npm under the beta tag and can be installed via npm install electron@beta, or npm install electron@40.0.0-beta.3.

Release Notes for v40.0.0-beta.3

Other Changes

• Updated Chromium to 144.0.7547.0. #49146

Release Notes for v39.2.6

Fixes

• Fixed visual artifacts while resizing a window on Windows. #49138

Other Changes

• Updated Chromium to 142.0.7444.226. #49137