Microsoft Windows November 2026 security update installation issues, Digi Mart USA News: Microsoft has confirmed reports that the November 2026 security updates are failing to install on Windows 11 systems that installed the October 2026 preview update.
Users have reported that the KB5132061 update fails to install, with the installation process locking midway and then triggering 0x800f0989 or 0x800f0993 errors.
In a service update seen by BleepingComputer, Microsoft said some devices might be unable to complete the installation. Affected devices might repeatedly attempt to install the update or display error code 0x80070306, 0x800f0989, or 0x800f0993.
Microsoft said the issue affects a limited number of devices that installed the October 2026 non-security preview update (KB5127936). Devices that did not install that preview update are not affected.
The company told IT administrators that the installation issues will resolve automatically for all affected customers by Friday morning, and that end users do not need to take any action to receive the fix. Affected devices should be repaired within 24 to 48 hours starting from November 11, 2026, at 10am PT, after which they will automatically download and install the November 2026 security update through Windows Update.
Administrators still receiving reports of installation issues after 48 hours were urged to contact Microsoft Support.
This is not the first time Microsoft has had to address Windows update installation issues this year. In March, it pulled a buggy Windows 11 non-security preview update (KB5079391) because of 0x80073712 errors.
In May, it fixed installation failures and 0x800f0922 errors affecting the May 2026 Windows 11 security update (KB5089549). In June, Microsoft warned that some Windows devices upgraded to Windows 11 24H2 or 25H2 may see 0x80073712 or 0x800f0993 errors when installing the latest monthly updates.
