Windows 11’s emergency update fixes broken Microsoft app logins

Microsoft has pushed out an emergency update for Windows 11 to fix unexpected app crashes and system issues. The problems began with the January Patch Tuesday update, which introduced bugs affecting apps interacting with cloud services like OneDrive. The update caused apps to freeze or crash, with Outlook being one of the worst hit. Microsoft initially released a fix earlier in the month, but it did not fully solve the problem. The new update, KB5078127, combines earlier security fixes with targeted repairs for app crashes tied to cloud-stored files. It addresses the Outlook PST issue and broader problems with apps stopping responding when opening or saving files in synced folders. The update is now rolling out through Windows Update for supported Windows 11 versions and installs automatically for most users. It is recommended to install the update, even if no crashes were noticed, as it includes security and stability improvements from earlier updates.