KB5001567 fixes KB5000802
Windows 10 just received an error update Blue Screen of Death “APC_INDEX_MISMATCH” and “win32kfull.sys”.
For version 20H2 / 2004 of Windows 10 update KB5001567 is released via Windows Update and fixes all printer issues that occurred after installing KB5000802 and other security updates.
Updates KB5000802, KB5000803, KB5000808 and other cumulative updates that released on March 9th proved to be very problematic for devices that use certain printer drivers. After the update, users could not use Kyocera, Ricoh and others printers.
In some cases, updating to Windows 10 KB5000802 also resulted in printing problems in certain software, such as LibreOffice, Notepad. PDF printing functions were even rarely affected.
The patch on the market today fixes all printer problems. For version 20H2, the hotfix is Windows 10 KB5001567, which is currently labeled "optional quality update".
If you check for updates today, you will see the following update in the "Optional quality update available" section:
2021-03 Cumulative Update for Windows 10 Version 20H2 for x64-based Systems (KB5001567)
Direct Download Links: 64 and 32-bit (x86).
For those using older versions of Windows 10, a new optional hotfix update is also available for your device.
If you are still using version 1903/1909, Microsoft reports that your device will receive update KB5001566 to fix a problem that might cause a blue screen "APC_INDEX_MISMATCH" when using applications to print to specific printers.
The following is a list of all the cumulative updates that were released to correct the "APC_INDEX_MISMATCH for win32kfull.sys" error:
- Windows 10 version 20H2 / 2004 - KB5001567
- Windows 10 version 1909/1903 - KB5001566
- Windows 10 version 1809 - KB5001568 (Enterprise & Education editions)
- Windows 10 version 1803 - KB5001565 (Enterprise & Education editions)
These updates will not be automatically installed on your computer, at least not yet.
If you want the update now, you can get the cumulative update by manually downloading it from Windows Update. You can apply the hotfix by clicking the "Download and Install" button. Once you are done, you will need to restart your device to correct the printing errors.
The second method of receiving the cumulative update is to download it directly from the Microsoft Update Catalog site, where you will find the download links for Windows 10 in 32 and 64-bit respectively.
Microsoft plans to include these patches in April 2021 in the Patch Tuesday, which is scheduled for release on April 13.