Outlook Users Encounter Issues Following Recent Windows 11 Update
Recent reports from users indicate that the latest KB5074109 update for Windows 11 has led to significant challenges for Outlook, with many experiencing freezing and hanging issues. This update, which was rolled out just days ago, has prompted Microsoft to acknowledge the situation, although a definitive solution or workaround has yet to be provided.
The nature of the problem appears to be quite specific, as Microsoft has categorized it as an “emerging issue.” Notably, this situation has not yet been included in the Known Issues section of the release notes for the KB5074109 update. This omission does not suggest a lack of awareness on Microsoft’s part; rather, the company seems to be grappling with the complexities of the issue at hand.
ISSUE
After updating Windows 11 to KB5074109 on January 13, 2026, users with Outlook POP account profiles report that Outlook is not exiting properly. This means that Outlook will not restart after you close it. In addition, some users report issues with Outlook hangs or freezes.
This is an emerging issue, and we don’t have all the symptoms yet, but we will update the topic as we understand the issue better.
STATUS: INVESTIGATING
The Outlook and Windows Teams are investigating this issue. We will update when we know more.
This issue is being discussed in the Learn forums if you want to ask questions or share feedback here:
Outlook Classic not opening properly or recording sent mails after 2026-01 Security Update (KB5074109) (26200.7623)
Additional Resources
January 13, 2026—KB5074109 (OS Builds 26200.7623 and 26100.7623)
For those affected, the lack of an immediate fix leaves limited options. While some may choose to endure the inconvenience, others might consider a more drastic measure. Bleeping Computer suggests that uninstalling the troublesome update could serve as a temporary workaround:
Until a permanent fix is released to address this bug, affected users can work around it by uninstalling the KB5074109 update by opening the Settings app, going to Windows Update > Update history > Uninstall updates, and clicking the “Uninstall” link next to “Security Update for Microsoft Windows (KB5074109)”.
However, this approach carries its own risks, as the update includes essential security fixes. While removing it may alleviate the Outlook issues, it could potentially expose systems to vulnerabilities. As users navigate this challenging situation, the hope remains for a swift resolution from Microsoft.
Image credit: Alexey Novikov / Dreamstime.com
