| Step | Likely to fix | |------|----------------| | Disable antivirus | ✅ High | | Run as admin | ✅ High | | Force re-check torrent | ✅ High (if torrent) | | Install in Safe Mode | ⚠️ Medium | | Redownload from different source | ✅ High (if files are truly corrupt) |
How to Fix "unarc.dll returned an error code -6" in FIFA 13 The "unarc.dll returned an error code -6" is a frequent headache when installing highly compressed games like FIFA 13 or various repacks. This error typically signals a failure in the decompression process, often caused by hardware limitations, corrupted archives, or software conflicts. Core Causes of Error Code -6
Bad characters or long folder names confuse the Unarc.dll decompression engine.
Before smashing your keyboard, let's understand the enemy. Unarc.dll is a dynamic link library used by archivers (like WinRAR or 7-Zip) and game installers to decompress data. The error codes tell a story:
Specifically, Code -6 means the installer attempted to write a file, but the operation failed due to one of three reasons:
For FIFA 13, the error often appears at the exact moment the installer tries to extract large .big files (the game’s proprietary archives).
Right-click the installer (.exe file) → Run as administrator.