(ordered by effectiveness)

error in Mortal Kombat 9 and 11 on PC is commonly triggered by corrupted AppData files or peripheral conflicts, requiring users to delete specific configuration folders or adjust RGB settings. Additional fixes include verifying Steam game files and, for MK9, modifying GPU memory settings in the dxdiag.txt file. Detailed troubleshooting steps can be found at WB Games Support

Start with . Nine times out of ten, that is your "Flawless Victory." If you are still reading this because the error persists, move to the shader cache in Step 2, and then the config file in Step 4.