Patch Tuesday nightmare continues: Certain Windows apps will freeze during use

Microsoft's latest Patch Tuesday updates for Windows 10, 11, and Server have been wreaking havoc for the last week or so. So far, users have experienced issues in Remote Desktop, hibernation and shutdown behavior, and Outlook. Although the Redmond tech firm has released patches for some of these problems already, a new one has now been acknowledged by the firm.

Over on its Windows Release Health dashboard, Microsoft has begun tracking a new bug that causes applications to become unresponsive or trigger "unexpected errors" when communicating with a cloud storage service like OneDrive to read or write files.

Microsoft has also highlighted an example about how this may impact Outlook where PST files are being saved on OneDrive. The email client will freeze or fail to reopen unless you manually terminate its process in Task Manager, or restart your PC. Similarly, you may also experience problems in seeing content in your sent emails folder and the inbox. Basically, any app which interacts with a cloud storage service, like OneDrive or Dropbox, for saving or opening files may be impacted.

The culprit behind this issue is once again the recent Patch Tuesday update. The bug impacts the following platforms:

• Client: Windows 11, version 25H2; Windows 11, version 24H2; Windows 11, version 23H2; Windows 10, version 22H2; Windows 10 Enterprise LTSC 2021; Windows 10 Enterprise LTSC 2019
• Server: Windows Server 2025; Windows Server, version 23H2; Windows Server 2022; Windows Server 2019

Microsoft is in the process of developing a fix for the latest nuisance. However, if you're the IT admin of an enterprise and want an immediate mitigation, your should reach out to Microsoft Support for business directly. The company has not detailed a concrete timeline regarding the general availability of a fix for all customers yet, but we might be in for another out-of-band (OOB) update by the looks of it.

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Posted Thursday 22 January 2026 at 5:06 am AEST (my time).

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