Microsoft has issued an unusual and urgent recommendation for Windows 11 users to remove the January 2026 security update — KB5074109 — after widespread problems were reported following its release on January 13, 2026. The advisory breaks from typical guidance, as Microsoft normally encourages updates for security reasons. However, the severity of the issues linked to this update has prompted a public rollback suggestion while the company works on permanent fixes.
What Went Wrong with KB5074109
The KB5074109 update was part of Microsoft’s January 2026 Patch Tuesday cycle and included over 100 security fixes designed to protect Windows 11 systems from known vulnerabilities. Instead, many users began reporting significant issues shortly after installation:
Outlook Classic failures: Users of the classic Outlook desktop app with POP email accounts or PST files stored in cloud-synced folders like OneDrive experienced frequent freezes, hangs, and unresponsiveness. Microsoft confirmed that the app could become unusable after the update.
Black screen and stability problems: Several systems — especially those with NVIDIA GPUs — experienced black screen errors, system lockups, and broken desktop customizations.
App crashes and cloud storage issues: Applications accessing cloud data through services like OneDrive or Dropbox also showed failures or unresponsiveness.
Microsoft’s Official Recommendation
In response to widespread reports of desktop crashes, Microsoft has issued a rare recommendation: users affected by the recent KB5074109 update should uninstall it or switch to alternative platforms until a stable patch is released.
Official Workarounds
Microsoft is currently pointing users toward two primary solutions to restore functionality:
- Uninstall Update KB5074109: Affected users can manually remove the update by navigating to Settings → Windows Update → Update history → Uninstall updates. Locate KB5074109 in the list and select “Uninstall.”
- Transition to Outlook Webmail: If you are unable to uninstall the update due to administrative restrictions, Microsoft suggests using Outlook on the web as a temporary alternative to the desktop application.
What Users Can Do Now
If you’re caught in the crossfire of this latest Windows update bug, you aren’t stuck. Here is a streamlined breakdown of your immediate options while Microsoft works on a fix:
Action Plan for Affected Users
- Roll Back the Update: If your system is unstable, uninstall KB5074109 via the Windows Update history settings. This is the most direct way to restore functionality.
- Switch to Webmail: If the update broke your desktop mail client, use your browser for webmail or try a third-party alternative until a patch is issued.
- Stay Informed: Keep a close eye on the official Microsoft Support pages. They will provide the “all-clear” once a stable, revised version of the update is ready for download.
The Verdict on Windows 11 Update KB5074109
The January 2026 security rollout has proven to be a rocky start for the year. Following widespread reports of Outlook freezes, system-wide black screens, and Remote Desktop failures, Microsoft has taken the unusual step of advising affected users to roll back the update.
While intended to bolster security, KB5074109 has introduced significant stability risks for many configurations, making it a “skip” or “uninstall” for anyone prioritizing workflow over the latest security patches—at least until a hotfix is deployed.