Windows 11: November security update KB5132061 fails on some PCs

Microsoft confirms the issue on Windows 11 24H2, 25H2 and 26H2 and promises an automatic repair within 24 to 48 hours.

Microsoft released the security update KB5132061 for Windows 11 on 10 November 2026. On some devices, installation fails, as the company itself confirms.

Patch Tuesday is the fixed date on which Microsoft releases security updates for Windows every month. According to Microsoft, November’s update brings improvements to Secure Boot, NTLM sign-in and the signature check for PowerShell scripts, among other things. Anyone who cannot install the update also misses out on these security improvements – until the announced repair takes effect.

Microsoft does not say exactly how many devices are affected. The company speaks generally of “some devices” and only added the issue to the list of known issues on the update’s support page a day after release, on 11 November 2026. This also affects Windows 11 devices in the UK, provided they are running the versions named above.

Which Windows 11 versions are affected

On the support page for the update, Microsoft names three affected version states: Windows 11, version 26H2, in all editions; Windows 11, version 25H2, also in all editions; and Windows 11, version 24H2, but there explicitly only in the Enterprise and Education editions. For the widely used Home and Pro editions of 24H2, the page does not list this particular issue.

Anyone unsure which version and edition is running on their own device can find this under Settings › System › About. That is also useful because many older Windows Update support issues are limited to individual versions only.

The error codes at a glance

According to Microsoft, affected devices may repeat the installation unsuccessfully several times or abort with one of the following error codes: 0x80070306, 0x800f0989 or 0x800f0993. The codes appear in the update history under Settings › Windows Update › Update history. The support page does not go into detail on the exact technical cause behind each code.

Microsoft’s automatic repair has been running since 11 November

Microsoft writes that the repair runs automatically on all affected devices that are online and use Windows Update in Settings. It began on 11 November 2026 at 10am Pacific time – 6pm in the UK the same day – and should reach all affected devices within 24 to 48 hours. No manual action is required for this; according to Microsoft, the device then downloads and installs the November update by itself.

Anyone not worried about an urgent security risk can simply wait for the repair. Anyone using the device for work or sensitive data should still keep an eye on the update history over the next few days.

What else KB5132061 changes

Regardless of the installation problem, the November update brings several smaller changes, according to Microsoft: Secure Boot receives additional device data so that more devices can receive the new certificates. Windows clients will, by default, offer NTLM message signing on non-anonymous connections to reduce the risk of relay attacks. PowerShell checks the encoding of signed scripts more strictly; scripts with invalid UTF-8 encoding can therefore fail the signature check. The update also fixes an error when adding printers published in Active Directory, an error code 10 issue affecting certain USB audio devices, and Remote Desktop connection drops caused by a certificate problem. Microsoft is not announcing an additional preview update for December 2026; the regular update cycle is due to resume in January 2027.

We’d like to hear from you: Did the November update get stuck on your device too, or did it install smoothly?

Feel free to share your experience in the comments.

Sources and status

• Microsoft Support: KB5132061 – Windows 11 24H2, 25H2, 26H2, security update of 10 November 2026, including known issues and repair timeline

Research and data as of: 13 November 2026.

Transparency note: AI-assisted tools were used in researching, structuring and writing this article. The sources used are listed in the article. Publication takes place only after manual editorial approval. Translation of the German original on Net Trends.