KB5132061 triggers 0x800F0993 and 0x800F0989 errors while Microsoft remains silent
Following the release of this month’s Patch Tuesday, which delivered a comprehensive set of fixes across Microsoft products, many users have reported that the Windows update KB5132061 fails to install, displaying either the 0x800F0993 or 0x800F0989 error codes. Microsoft has not yet published any known issues page or official statement regarding the problem.
Besides the security enhancements, the update also addresses several known issues, such as USB Audio 1.0 devices that may fail to start and show a Device Manager error 10.
Without an official explanation from Microsoft, community members have begun troubleshooting. One user, posting as Forceflow on ElevenForum, hypothesised that the issue might be linked to Windows Sandbox and reported that disabling that feature and rebooting allowed the update to install. Other users, however, experienced failures even with Sandbox turned off, and suggested using DISM to verify the installation image or downloading the update manually.
The update is critical, fixing 726 vulnerabilities in Windows alone, so the installation problems pose a security risk. Recent Microsoft releases have been plagued by unexpected issues, prompting frequent out‑of‑band patches. In September 2026, an emergency update was issued after a regular security patch disrupted Remote Desktop Services. The October Patch Tuesday for Windows Server caused Exchange Server failures, requiring a registry workaround, though no out‑of‑band fix was released and the problem was later addressed in the November update. This time, however, the new patch is failing outright, leaving users unable to determine what may be broken.
The Register has reached out to Microsoft for comment. ®
