KB5001335 / KB5001392 Windows 7 April 2021 Patchday ESU v9 and v11 Still Work

On: April 14, 2021

Microsoft has also made the April updates KB5001335 (Monthly Rollup) and KB5001392 (Security-only update) available for download for Windows 7. There is no new SSU this month.

The ESU patch v9 or v11 can still be used without problems, even if we are now in the second year of the ESU patches.


Known problems:

  • After installing this update and restarting the device, you may receive the error message “Failure to configure Windows updates. Changes will be undone. Do not turn off your computer, ”and the update may show up as Failed in the update history. This error message appears if the device was not prepared for the ESU updates.
  • Certain operations, such as For example, renaming files or folders that are located on a Cluster Shared Volume (CSV) may fail with the error "STATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)". This occurs when you are performing the operation on a CSV owner node from a process that does not have administrative privileges.

Fixed issues:

  • Addresses a time zone change for Volgograd, Russia from UTC + 4 to UTC + 3 Moscow Standard Time (MSK).
  • Addresses a time zone change for the Republic of South Sudan from UTC + 3 to UTC + 2 Juba. For more information about this change, see KB 4601275.
  • Addresses an issue with security vulnerabilities identified by a security researcher. Due to these security vulnerabilities, this and all future Windows updates will no longer contain the RemoteFX vGPU function. For more information about the vulnerability and how to resolve it, see CVE-2020-1036 and KB4570006. Secure vGPU alternatives are available via Discrete Device Assignment (DDA) in Windows Server LTSC versions (Windows Server 2016 and Windows Server 2019) and Windows Server SAC versions (Windows Server, version 1803 and later versions).
  • Addressed an issue that prevents you from specifying up to 255 columns when using the Jet Text installable indexed sequential access method (IISAM) format.
  • Addresses an issue where Windows Backup does not report a successful event with Event ID 14 or a completed backup with Event ID 4 after applying update KB4561643 or KB4556843 when you monitor for these events.
  • Security updates for Windows Apps, Windows Hybrid Cloud Networking, Windows Kernel, and Windows Media.

Manual download of KB5001335

Manual download of KB5001392

Security update only:

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