: Right-click The Sims 4 in your Library , select Properties > Installed Files > Verify integrity of game files .
: The patching tool (often a .bat or .exe file) is frequently coded to look for files in a specific relative path. If the utility is run from the wrong folder, it will fail to "see" the patch0.dat file . patch0dat does not exist new
If you are using a mod manager or manual installation: : Right-click The Sims 4 in your Library