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These release notes provide information about new features and nonsecurity updates that are included in the Microsoft Edge Stable and Extended Stable Channels.
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Contents - August - October 2026
| Channel | Latest Major Version | Latest Minor Version |
|---|---|---|
| Stable 155 | 155.0.4283.45 (October 08, 2026) | - |
| Extended Stable 152 | 152.0.4191.53 (August 27, 2026) | 152.0.4191.122 (October 08, 2026) |
Version 155.0.4283.45: October 08, 2026 (Stable) - Main Release
Release Summary
| Category | Description |
|---|---|
| Announcements | Announcements about sign-in migration, Copilot URL redirects, and unload changes in Microsoft Edge. |
| Feature Updates | Updates to tab organization, video translation, and network access policies in Microsoft Edge. |
| Fixes | Fixes in this release of Microsoft Edge. |
| Policy Updates | New and updated policies in Microsoft Edge. |
| Security | Stable channel security updates are listed here. |
Announcements
Deprecating the 'unload' event. Microsoft Edge is changing the default behavior of the web platform 'unload' event. As the rollout progresses, pages will no longer run 'unload' event handlers unless the site explicitly permits them.
In Edge 152 and 153, unload handlers will stop firing by default for 60% of page loads unless the site explicitly enables them through Permissions Policy.
In Edge 154, the rollout will increase to 80% of page loads.
In Edge 155, the rollout will reach 100% of page loads.
The 'unload' event is not a dependable way to save data, perform cleanup, or report the end of a session. Browsers and operating systems can suspend or terminate pages without firing it, and this can prevent pages from using the back/forward cache, which may make back and forward navigation slower.
Web developers should migrate to lifecycle events and APIs designed for these scenarios. The long-term direction of the web platform is to remove support for unload.
Retiring legacy sign-in implementation on Windows. Microsoft Edge plans to retire its legacy direct-WAM sign-in implementation on Windows in version 157, completing the transition to OneAuth. OneAuth continues to use Windows Web Account Manager (WAM) internally; WAM itself is not being deprecated.
The vast majority of users have already transitioned automatically with no interruption. For remaining profiles that have not yet migrated, the transition will complete upon updating to version 157. In rare cases, some users may need to sign in to Microsoft Edge again.
Action recommended for administrators:
Check
edge://signin-internalsunder Edge Auth Library Information → Library to see if any managed profiles still show WAM.Organizations wishing to validate early or test profiles that previously disabled the transition can launch
msedge.exe --enable-features=msForceOneAuthWAMafter closing all Microsoft Edge processes, including background processes, as the flag won’t take effect if Microsoft Edge is already running.Report any sign-in issues to Microsoft Support prior to the Microsoft Edge 157 release.
Update allow lists to *.cloud.microsoft before the Copilot URL redirect. Review your organization's allow/block list configurations for Microsoft 365 Copilot Chat in Edge. Tenant admins can find additional details in the Message Center section of the Microsoft 365 Admin Center under MC1462915.
Feature Updates
Tab organization enhancements. Microsoft Edge is expanding tab and Workspace organization capabilities to suggest groupings, names, visuals, and labels. Users can manage these experiences through the "Let Microsoft Edge help keep your tabs organized" setting under
edge://settings/privacy/services; administrators can control them using the TabServicesEnabled policy.Real-time video translation retirement. Real-time video translation has been retired. The LiveVideoTranslationEnabled policy will be deprecated in a future update.
Update for LocalNetworkAccessRestrictionsTemporaryOptOut policy. The planned removal of the LocalNetworkAccessRestrictionsTemporaryOptOut policy has been updated. The policy is now scheduled for removal after Microsoft Edge version 163, previously it was version 156.
Fixes
- Fixed an issue which caused search engines configured through recommended default search provider policies to become invalid after Microsoft Edge ran for a short period of time. When this occurred, address bar searches stopped working.
Policy Updates
Deprecated policies
- OneAuthAuthenticationEnforced - OneAuth Authentication Flow Enforced for signin (deprecated)
Note
For the latest web platform features and updates, see the Microsoft Edge 155 web platform release notes (Oct. 8, 2026).
Version 152.0.4191.53: August 27, 2026 (Stable) - Main Release
Release Summary
| Category | Description |
|---|---|
| Announcements | Announcements about the unload event deprecation and the new 2-week release cadence in Microsoft Edge. |
| Feature Updates | Updates to sign-in options, password management, Copilot controls, and notification protections in Microsoft Edge. |
| Policy Updates | New and updated policies in Microsoft Edge. |
| Security | Stable channel security updates are listed here. |
Announcements
Deprecating the unload event. Microsoft Edge is changing the default behavior of the web platform unload event. As the rollout progresses, pages will no longer run unload event handlers unless the site explicitly permits them.
In Edge 152 and 153, unload handlers will stop firing by default for 60% of page loads unless the site explicitly enables them through Permissions Policy.
In Edge 154, the rollout will increase to 80% of page loads.
In Edge 155, the rollout will reach 100% of page loads.
The unload event is not a dependable way to save data, perform cleanup, or report the end of a session. Browsers and operating systems can suspend or terminate pages without firing it, and this can prevent pages from using the back/forward cache, which may make back and forward navigation slower.
Web developers should migrate to lifecycle events and APIs designed for these scenarios. The long-term direction of the web platform is to remove support for unload.
Microsoft Edge has completed the move to a 2-week cadence for updates. We have adopted a new, 2-week release cycle for major versions. For more information, see Faster updates, enterprise-friendly schedule: the new Microsoft Edge release cycle - Microsoft Edge Blog.
Feature Updates
Automatically unsubscribe users from notifications sent by scam and malicious sites. Microsoft Edge now helps further protect users from malicious web notifications. When a notification leads users to a site that Microsoft Defender SmartScreen blocks as a scam, phishing, or malware page, Edge automatically stops that source from sending users further notifications. Edge lets users know when this happens. Users can review and restore any of these sites anytime under
edge://settings/privacy/sitePermissions/allPermissions/notifications. Note: This is a controlled feature rollout. If you don't see this change, check back as we continue the rollout.Sign in to Edge with an Apple account. Users can now sign in to Microsoft Edge using an Apple account in addition to the Microsoft account from the profile menu and Edge sign-in screen. Available for Windows and macOS devices. Admins can control availability to this feature using the NonMicrosoftAccountSignInEnabled policy. Note: This is a controlled feature rollout. If you don't see this change, check back as we continue the rollout.
Real-time video translation retirement. Real-time video translation is being retired through a gradual rollout. Availability may vary across environments during the rollout. The LiveVideoTranslationEnabled policy will be deprecated in a future update.
Enhanced Key Icon with Credential Details, Copy Actions, and Notes. The key icon in Edge's address bar now lets users click into any saved credential to view a detailed panel. From there, users can copy a username, reveal and copy a password, and add personal notes to each login. Keep track of security questions, account purpose, or recovery details right alongside credentials, without opening Settings or the full password manager. Note: This is a controlled feature rollout. If you don't see this change, check back as we continue the rollout.
Drop is retired. We're simplifying Microsoft Edge. Drop is retired in Microsoft Edge version 152.
New Copilot Cowork policy. Copilot Cowork may perform tasks such as creating tabs, taking screenshots, and interacting with web pages. Admins can now control availability of this feature using the CopilotCoworkToolActionsEnabled policy, which corresponds to the Allow Cowork to take actions on your behalf setting in
edge://settings/ai. This policy applies only when Cowork Browsing is enabled at the tenant level in the M365 admin center.Clarification of WebView2 DowngradeVersion policy. The DowngradeVersion policy allows admins to temporarily roll back specific applications to a previous WebView2 Evergreen Runtime version (N-1 or N-2). The policy requires an exact 4-part numeric WebView2 Runtime version, for example 151.0.2178.0. Admins can find the exact 4-part version number in the Microsoft Edge release notes for Stable Channel. Major-version-only values are not supported. If no exact matching folder is found, the policy has no effect and the runtime defaults to the BrowserExecutableFolder policy or the Evergreen runtime, which is the default auto-updating runtime.
Update for LocalNetworkAccessRestrictionsTemporaryOptOut policy. The planned removal of the LocalNetworkAccessRestrictionsTemporaryOptOut policy has been updated. The policy is now scheduled for removal after Microsoft Edge version 156; previously it was version 152.
Updated Copilot policy. Admins can now control availability of the video transcription feature using the EdgeEntraCopilotPageContext policy, which corresponds to the Allow Copilot to transcribe your video setting in
edge://settings/ai.
Policy Updates
New policies
- CopilotCoworkToolActionsEnabled - Allow Cowork to take actions on your behalf
- UpdateOnZeroWindowEnabled - Controls background automatic relaunch when all browser windows are closed
- BackForwardCacheForWebSocketsAllowed - Allow Back/Forward Cache for WebSockets
Additional policy changes
- ShowHistoryThumbnails - The ShowHistoryThumbnails policy has been removed.
Note
For the latest web platform features and updates, see the Microsoft Edge 152 web platform release notes (Aug. 2026).
Version 152.0.4191.122: October 08, 2026 (Extended Stable) - Update 9
Release Summary
| Category | Description |
|---|---|
| Fixes | Fixed various bugs and performance issues. |
Version 152.0.4191.119: October 05, 2026 (Extended Stable) - Update 8
Release Summary
| Category | Description |
|---|---|
| Fixes | Fixed various bugs and performance issues. |
Version 152.0.4191.111: October 01, 2026 (Extended Stable) - Update 7
Release Summary
| Category | Description |
|---|---|
| Fixes | Fixed various bugs and performance issues. |
Version 152.0.4191.100: September 25, 2026 (Extended Stable) - Update 6
Release Summary
| Category | Description |
|---|---|
| Fixes | Fixed various bugs and performance issues. |
Version 152.0.4191.96: September 21, 2026 (Extended Stable) - Update 5
Release Summary
| Category | Description |
|---|---|
| Fixes | Fixed various bugs and performance issues. |
Version 152.0.4191.88: September 17, 2026 (Extended Stable) - Update 4
Release Summary
| Category | Description |
|---|---|
| Fixes | Fixed various bugs and performance issues. |
Version 152.0.4191.77: September 10, 2026 (Extended Stable) - Update 3
Release Summary
| Category | Description |
|---|---|
| Fixes | Fixed various bugs and performance issues. |
Version 152.0.4191.66: September 04, 2026 (Stable) - Update 2
Release Summary
| Category | Description |
|---|---|
| Fixes | Fixed various bugs and performance issues. |
| Security | Stable channel security updates are listed here. |
Version 152.0.4191.62: September 02, 2026 (Stable) - Update 1
Release Summary
| Category | Description |
|---|---|
| Fixes | Fixed various bugs and performance issues. |
| Security | Stable channel security updates are listed here. |
See also
- All the security updates are listed in Release notes for Microsoft Edge Security Updates.
- Archived release notes for Microsoft Edge Stable Channel are located in Archived release notes for Microsoft Edge Stable Channel.
- Microsoft Edge Enterprise landing page.
- Explore all previous releases.
To understand Microsoft Edge channels, see the Overview of the Microsoft Edge channels.
Note
For the Stable Channel, updates roll out progressively over one or more days. To learn more, see Progressive rollouts for Microsoft Edge updates.
Microsoft Edge Web Platform constantly evolves to improve user experience, security, and privacy. To learn more, see Site compatibility-impacting changes coming to Microsoft Edge.