Articles about APC_INDEX_MISMATCH

Windows 10 update farce continues as Microsoft pulls the plug on problematic printing patch

Microsoft building logo

Microsoft's appalling track record with problematic updates for Windows 10 shows absolutely no signs of abating. If the fiasco that came after this month's Patch Tuesday updates is anything to go by, if anything the situation is getting worse.

Over the last week or so, we have reported about printing problems that followed the release of March's updates, and the subsequent string of patches that not only failed to fix things but, in many cases, actually made things worse. Now the fubar'd fix has been deemed so problematic that Microsoft has taken the decision to pull it.

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Microsoft issues official fix for blue screens and printing problems in Windows 10

Windows key on keyboard

If you've installed Windows 10 updates this month, you may well have started to experience problems with printing, as well as seeing blue screens with an APC_INDEX_MISMATCH error. After acknowledging the problem, Microsoft initially offered a workaround, but now the company has released a proper fix for the issue.

The fix takes the form of an out-of-band update for Windows 10 as Microsoft rushed to patch the bug introduced by the March 2021 cumulative updates. In all, there are four patches to install, each for different builds of Windows -- KB5001565, KB5001566, KB5001567 and KB5001568.

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Microsoft reveals workaround for Windows 10 printing problems and blue screen issues

Windows 10 logo on a beach

This Patch Tuesday, Microsoft released cumulative updates for Windows 10 and there were numerous complaints about problems with printing after installing them.

Users with various brands of printer found that printing failed as they experienced APC_INDEX_MISMATCH errors and blue screens. A few days ago, Microsoft confirmed that it was aware of the issue and was investigating; now the company has come up with a workaround.

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Microsoft confirms printing problems and blue screens after latest Windows 10 updates

Windows 10 laptop

Microsoft has continued its trend of releasing problematic updates for Windows 10. Just a few days ago, the KB4601319 update was found to break File History backups in Windows 10, and this month's Patch Tuesday cumulative updates have also been causing issues.

As we have reported, there have been numerous complaints from people who have installed the KB5000802 and KB5000808 updates for Windows 10. Now Microsoft has confirmed that there are indeed problems with printing after installing these updates, specifically BSoDs and a APC_INDEX_MISMATCH error.

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