Fixing Unarc.dll Returned an Error Code 14: A Comprehensive Guide
If none work, the archive itself may be damaged on the server side — report it to the source provider. how to fix unarc.dll returned an error code 14
You will likely see one of the following full error messages: Fixing Unarc
Since the error often means the archive is literally broken, this is the most critical first step: Install to NTFS drive instead
What is Unarc.dll?
Error 14 can appear if you’re installing to a FAT32 drive (max 4GB file size).
C:\Program Files (x86)\My Game, try installing to C:\Games\MyGame.Step-by-step: