Forum Discussion

Adèle's avatar
Adèle
Copper Contributor
Jul 08, 2026

Edge >=150 blocks ALL extensions on *.cloud.microsoft (regression from 149) - no policy override

Starting with Edge 150, a hardcoded extension blocklist applies to *.cloud.microsoft (M365 Copilot and Microsoft 365 app surfaces). Extensions no longer run on these pages. This is a regression - on ...
Kelly_Y's avatar
Kelly_Y
Icon for Microsoft rankMicrosoft
Jul 21, 2026

ryanbuening-celina​ - The fix should be in the latest Beta version 151.0.4129.35 and it is expected to be in Stable 151 when it is released next week.  Please test using Beta if possible and let us know if you are still reproducing the issue.  Thanks! 

0xadada's avatar
0xadada
Copper Contributor
Jul 22, 2026

I tested with Edge 151 Beta `151.0.4129.35` fixed the issue on m365.cloud.microsoft and forms.cloud.microsoft but the others in my list remain blocked:

 

edgeservices.bing.com

copilot.microsoft.com

explore.microsoft.com

www.microsoft365.com

  • Kelly_Y's avatar
    Kelly_Y
    Icon for Microsoft rankMicrosoft
    Jul 24, 2026

    0xadada​ I've reached out to the team and some URLs may continue to block extension functionality because certain web experiences have restrictions in place that limit extension access by design. As a result, the behavior observed on those sites is expected and is not impacted by this fix.  

    -Kelly

    • ryanbuening-celina's avatar
      ryanbuening-celina
      Tin Contributor
      Jul 29, 2026

      > certain web experiences have restrictions in place that limit extension access by design.

      Microsoft should not be globally dictating at the browser level which user extensions can work with what URLs. This is very odd.