If you are using a FitGirl repack:
Security software can mistakenly flag the decompression process as a threat, blocking the installer from writing files. Open > Virus & threat protection . how to fix unarc dll returned an error code 6 fifa 13 link
Fix: Unarc.dll Returned an Error Code 6 in If you're trying to install If you are using a FitGirl repack: Security
If the error persists, the issue may be deeper within your system's hardware or registry: how to fix unarc dll returned an error code 6 fifa 13 link
For 90% of users, running as admin fixes it. If not, the 4GB patch will. Leave a comment if you're still stuck."
Antivirus programs often disrupt high-compression unpackers. Type "Windows Security" in your Start menu and open it.
Error Code 6 explicitly points to an issue where the software or the target disk. This bottleneck occurs due to several common culprits: