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

The first big Windows update of 2026 has bugs: Outlook freezes, app errors, and how to fix them ...

Microsoft's January 2026 security update has broken Windows 11 apps like Notepad and Snipping Tool, introducing dual bugs ...

Windows 11 is becoming a crash-happy nightmare as two new bugs are frustrating users.

Yet another bug in Windows 11 has left users unable to open apps like Notepad and Snipping Tool, as they are greeted with error code 0x803F8001.