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Windows Patch Tuesday Fallout: OOB Fixes, Outlook PST Cloud Issues & RDP Failures·MSFT +2.1%Outlook moves Search Folders to Settings, adds clutter-busting filters·NVDA +0.2%Outlook Freezes After January 2026 Updates: Microsoft Confirms OneDrive PST Conflict·GOOGL +1.7%Microsoft KB5074109 Update Triggers System Crashes Despite Fixing Critical RCE Flaws·AMZN +1.1%KB5074109 Outlook Freeze: Microsoft's January 2026 Patch Tuesday Bug Explained·MSFT +2.1%Windows 11 KB5074109 Update Breaks Outlook POP & Cloud PC: Microsoft's Known Issue Rollback Fix·NVDA +0.2%January 2026 Patch Tuesday triggers Remote Desktop failure, forcing Microsoft to rush OOB fixes for Windows 11.·GOOGL +1.7%Clean GPU driver reinstall restores Windows 11 gaming FPS after KB5074109 update·AMZN +1.1%Windows Patch Tuesday Fallout: OOB Fixes, Outlook PST Cloud Issues & RDP Failures·MSFT +2.1%Outlook moves Search Folders to Settings, adds clutter-busting filters·NVDA +0.2%Outlook Freezes After January 2026 Updates: Microsoft Confirms OneDrive PST Conflict·GOOGL +1.7%Microsoft KB5074109 Update Triggers System Crashes Despite Fixing Critical RCE Flaws·AMZN +1.1%KB5074109 Outlook Freeze: Microsoft's January 2026 Patch Tuesday Bug Explained·MSFT +2.1%Windows 11 KB5074109 Update Breaks Outlook POP & Cloud PC: Microsoft's Known Issue Rollback Fix·NVDA +0.2%January 2026 Patch Tuesday triggers Remote Desktop failure, forcing Microsoft to rush OOB fixes for Windows 11.·GOOGL +1.7%Clean GPU driver reinstall restores Windows 11 gaming FPS after KB5074109 update·AMZN +1.1%

Outlook

The latest Outlook coverage — news, analysis, and updates from the WindowsNews.AI desk.

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Kb5074109 · Kb5074109 Update

Windows Patch Tuesday Fallout: OOB Fixes, Outlook PST Cloud Issues & RDP Failures

Microsoft's January 2024 Patch Tuesday has unleashed a wave of unexpected regressions affecting enterprise environments and individual users alike, with the company scrambling to release out-of-band...

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Boot Failure · Cloud File I O

KB5074109 Outlook Freeze: Microsoft's January 2026 Patch Tuesday Bug Explained

A routine January 2026 Patch Tuesday update, KB5074109, has inadvertently destabilized Microsoft's classic Outlook client for a significant number of users, causing persistent application freezes,...

SE Security Desk·26w ago
0x800f0905 · Appx Packaging

Windows 11 KB5074109 Update Breaks Outlook POP & Cloud PC: Microsoft's Known Issue Rollback Fix

The January 2026 Patch Tuesday update for Windows 11, officially designated as cumulative update KB5074109, has proven to be a significant disruption for many users, causing critical failures in...

SE Security Desk·26w ago
Cloud Pc · Gwsmo

January 2026 Patch Tuesday triggers Remote Desktop failure, forcing Microsoft to rush OOB fixes for Windows 11.

Microsoft's January 2026 Patch Tuesday updates for Windows 11 have proven particularly problematic, with the company confirming multiple regressions that required rapid out-of-band (OOB) fixes to...

SE Security Desk·26w ago
Azure Virtual Desktop · Driver Clean Install

Clean GPU driver reinstall restores Windows 11 gaming FPS after KB5074109 update

Millions of Windows 11 gamers experienced significant performance degradation following the January 2025 cumulative update KB5074109, with widespread reports of frame rate drops, stuttering, and...

SE Security Desk·26w ago
Native App · Outlook

Outlook's WebView2 Shift Sparks Windows 11 Backlash & Native App Debate

Microsoft's strategic pivot from native Windows applications to web-wrapped experiences has reached a critical inflection point with the forced migration of Outlook for Windows to a WebView2-based...

WN WindowsNews Desk·27w ago
Encrypt Only · Incident

Outlook Encrypt Only Bug Blocks Email Access: Microsoft's Fix & User Workarounds

A significant bug in Microsoft's Classic Outlook application has left users unable to read emails protected with the "Encrypt Only" security setting, transforming sensitive communications into...

SE Security Desk·27w ago
Classic Outlook · Encrypt Only

Outlook Encryption Broken: Microsoft Confirms 2511 Update Blocks Encrypt-Only Emails

Microsoft has confirmed that a recent Current Channel update to Classic Outlook (Version 2511, Build 19426.20218) introduced a critical regression that prevents recipients from opening messages...

SE Security Desk·27w ago
Email Security · Ome

Outlook S/MIME and OME Bug: How Microsoft's Fix Impacts Email Security

A critical bug in Microsoft's classic Outlook desktop client has exposed significant vulnerabilities in enterprise email security workflows, creating confusion and potential compliance risks for...

SE Security Desk·27w ago