Microsoft Edge now shows startup warnings for turned-off Manifest V2 extensions

Microsoft Edge is displaying warnings for Manifest V2 extensions that no longer meet its standards and may be removed soon.

We previously reported that Microsoft Edge started phasing out Manifest V2 extensions and that the Edge Add-ons store had started warning users that affected extensions may be removed soon. We also spotted Edge Canary disabling Manifest V2 extensions. Now, Microsoft is bringing the warning directly into the browser, with a prompt that appears when users launch Edge.

Spotted in Microsoft Edge Dev, the prompt says, “Some of your extensions were turned off” and tells users that some extensions no longer meet Microsoft Edge standards and may be removed soon. Unlike the warnings on the Extensions page, this message does not identify individual extensions. Instead, it gives users a general warning and asks them to manage their extensions.

The dialog includes two options: “Manage extensions” and “Cancel”. Clicking Manage extensions opens the edge://extensions page, where users can see which extensions have been affected.

On that page, Edge displays a separate warning on each affected extension card. In our case, uBlock Origin and WebScrapBook were both disabled. Each card says the extension no longer meets Microsoft Edge standards and may be removed soon. Edge also includes a Find similar extensions option on each card, giving users a way to look for alternatives.

The startup prompt makes these warnings harder to miss. Users no longer have to visit the Extensions page to discover that Edge has turned off some of their extensions. The browser now brings the issue to their attention as soon as they open Edge.

Microsoft announced its transition away from Manifest V2 in August. The company is gradually disabling affected extensions as it moves the ecosystem toward Manifest V3.

Microsoft began rolling out Manifest V2 deprecation warnings on the Extensions page across Edge channels, including Stable. The new browser-level startup prompt, however, is currently spotted in Edge Dev.