Error codes

0xc000001d

Illegal instruction

What it means

The program used a CPU instruction this processor does not support, or the file is damaged and only looks like code.

Common causes

• A build made for a newer CPU
• A corrupted executable or DLL
• An unstable overclock

How to fix it

1. Verify the game files or reinstall the app from the official source.
2. Check the app's system requirements: some new games need AVX2 or a newer instruction set.
3. Undo any overclock or undervolt, including XMP/EXPO memory profiles, and test at stock settings for a day.
4. Open Terminal (Admin) and run sfc /scannow, then DISM /Online /Cleanup-Image /RestoreHealth. Restart afterwards.