Users will see a frozen white screen when attempting to sign into the OneDrive for Business sync app.
In the meantime it is possible to workaround this problem by running this command as administrator:
reg add HKLM\SYSTEM\CurrentControlSet\Policies\Microsoft\FeatureManagement\Overrides /v 2767781516 /t REG_DWORD /d 0 /f
and restarting the computer. After logging just start OneDrive app and re-login as per usual.
September 24, 2021 10:48 PM
Title: Users will see a frozen white screen when attempting to sign into the OneDrive for Business sync app
User Impact: Users will see a frozen white screen when attempting to sign into the OneDrive for Business sync app.
More info: This issue might affect users who have the Microsoft Exploit Protection EAF (Export Address Filtering) feature enabled and have installed the September security updates. We recommend implementing the Known Issue Rollback (KIR) or manually adding the registry keys if users need immediate relief. Details on how to do implement these workarounds can be found through the following link:
https://docs.microsoft.com/en-us/windows/release-health/status-windows-10-21h1#1696msgdesc Alternatively, we've also confirmed with affected users that disabling Export Address Filtering (EAF) is a potential workaround to alleviate the impact. Admins who wish to do so can navigate to Windows Security > App & Browser Control > Exploit Protection Settings > Program Settings > OneDrive.exe > Turn off Export Address Filtering (EAF) and mitigate the impact. Please note that many Mobile Device Management (MDM) customers can't deploy group policies. Customers unable to deploy group policy settings for the KIR should open support cases for further assistance.
Current status: We've prepared a fix for this issue and are preparing it for deployment through our change management protocols. Due to the complexity and nature of our solution, we expect this process to take several weeks to complete. In the interim, users are encouraged to leverage the workarounds provided above.
Scope of impact: Any user may be prevented from signing into the OneDrive for Business sync app.
Preliminary root cause: A recent Windows patch deployment inadvertently introduced an Export Address Filtering (EAF) issue that's contributing to the impact.
Next update by: Tuesday, October 12, 2021, 12:30 AM (10/11/2021, 11:30 PM UTC)