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

Based on a response from an independent advisor named Harold Milan to a forum post from an affected user, this error typically pops up when the Microsoft Store can't validate a license. This could be ...

Windows 11 Sandbox is completely unusable for many users due to error 0x800705b4 — but here's how to fix it.

Windows 11’s latest update drama: KB5074109 breaks things, and the uninstall process breaks too.

Microsoft has issued guidance to uninstall KB5074109 security update or switch to webmail after the patch caused Outlook ...

Discover how to download Microsoft Teams for Windows 11 in 2026 with our ultimate guide. Official methods, troubleshooting, ...