Microsoft issued another out-of-band update to fix a bug that caused Outlook to crash for Windows 11 users. This second emergency patch addresses issues seen with Outlook and files stored in the cloud following Microsoft’s January 2026 Windows security update.
According to Microsoft, this update fixes a bug where some apps that “open or save files stored in cloud-backed locations” became unresponsive or displayed error messages. Some users also experienced Outlook crashing or not opening when PST files are stored in cloud-based options like OneDrive.
This is the second time this year that Microsoft had to issue a last-minute fix for bugs related to its January security update. Last week, some Windows 11 devices couldn’t shut down or hibernate, while other devices running Windows 10 or 11 couldn’t log in through remote connections. For more context, Microsoft only issues out-of-band updates when there’s a serious issue that can’t wait until its regular update cycle. Fortunately, the latest out-of-band update is cumulative, so you only need to download and install this one to fix the issues seen with the January update.
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