Microsoft confirms a server-side bug broke Store-based app activation, affecting apps like Notepad with 0x803F8001 error.

Windows 11 KB5078127 is an 'out-of-band' patch to fix an issue that broke Outlook Classic (POP, PST) after January 2026 Patch ...

Microsoft issued another out-of-band update to fix a bug that caused Outlook to crash for Windows 11 users. This second ...

Microsoft shared a temporary workaround for customers experiencing Outlook freezes after installing this month's Windows ...

If you encounter Event ID: 7043, The Windows Security Service did not shut down properly after receiving a preshutdown control in the Event Logs of your Windows ...