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  1. Jun 2021
    1. This BSOD error message mainly appears when you have incompatible hardware or a malfunctioning driver because a driver is missing or improperly installed. It's also possible that the new hardware that you recently installed is not fully compatible with your computer and is causing the APC Index Mismatch error in Windows 10. To fix this, install the latest Windows updates, update device drivers via Device Manager, or check your system file issues.