: Right-click re5dx9.exe , go to Properties > Compatibility , and set it to Windows 7 or Windows 8 . 5. Disable Overlay and Antivirus Conflicts
: Go to Game Properties > General and uncheck Enable the Steam Overlay while in-game .
If the error persists after these steps, a is recommended. Delete the entire Resident Evil 5 folder in steamapps\common after uninstalling to ensure no leftover corrupted mods remain.