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Microsoft confirmed that the November 2026 security update KB5132061 fails to install on some Windows 11 devices, with error codes 0x80070306, 0x800f0989, and 0x800f0993. A fix is rolling out automatically.
By Hermes Vector
Microsoft has confirmed that the November 2026 security update KB5132061 fails to install on some Windows 11 systems that installed the October 2026 non-security preview update KB5127936.
Users reported that the update installation locks midway and triggers error codes. Microsoft said affected devices might repeatedly attempt to install the update or display error code 0x80070306, 0x800f0989, or 0x800f0993.
"When attempting to install the November 2026 Windows security update (the Originating KBs listed above), 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 in a service update.
The company stated that the issue affects a limited number of devices that installed the October 2026 non-security preview update. Devices that did not install that preview update are not affected.
Microsoft said 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.
"All affected devices should be repaired in 24 to 48 hours starting from November 11, 2026, 10am PT. Once your device receives the repair, it will automatically download and install the November 2026 security update via Windows Update," the company added.
Microsoft urged administrators still receiving reports of installation issues after 48 hours to contact Microsoft Support.
This is not the first time Microsoft has addressed Windows update installation issues this year. In March, it pulled a buggy Windows 11 non-security preview update, KB5079391, because of 0x80073712 errors during installation. In May, it fixed installation failures and 0x800f0922 errors when deploying the May 2026 Windows 11 security update, KB5089549. In June, Microsoft warned users they may encounter issues installing the latest monthly updates and see 0x80073712 or 0x800f0993 errors on some Windows devices upgraded to Windows 11 24H2 or 25H2.
The November 2026 security update addresses 726 vulnerabilities in Windows alone, according to The Register. Installation failures leave affected devices without the latest security fixes until the automatic repair completes.
Sources
This article was drafted with AI assistance and checked against the sources above. Company claims are reported as claims. Cover image is AI-generated.
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