https://www.bleepingcomputer.com/news/microsoft/windows-10-emergency-updates-released-to-fix-printing-crashes/

Microsoft has released out-of-band non-security updates to fix a know Windows 10 issue causing blue screens when printing to network printers after installing the March 2021 cumulative updates.

According to Microsoft, the cumulative updates released today are addressing "an issue that might cause a blue screen when attempting to print to certain printers using some apps and might generate the error, APC_INDEX_MISMATCH."