Windows 11 KB5078127 is an 'out-of-band' patch to fix an issue that broke Outlook Classic (POP, PST) after January 2026 Patch ...
Windows 11 KB5074109 causes Outlook freezing for POP accounts. Microsoft confirms the issue and investigates a permanent fix.
After Windows 11 January 2026 update, we're seeing reports of other issues, including a sleep problem (S3), and more.
Microsoft confirmed that the KB5074109 January Windows 11 security update causes the classic Outlook desktop client to freeze ...
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