How to Fix "Unarc.dll Returned an Error Code -14" During Game Installation
: If your current client reports a 100% complete download but the installer still throws error 14, try importing the torrent file into an alternative program like QBittorrent or Transmission to run a deeper re-verification. 3. Expand Windows Virtual Memory (Paging File)
The game might rely on Microsoft Visual C++ packages to run correctly.
The error message usually appears on Windows PCs when a setup program fails to decompress compressed file archives during heavy software or game installations. how to fix unarcdll returned an error code14 upd
Decompressing massive game files requires a huge amount of memory. If your physical RAM fills up and your Windows Paging File (virtual memory allocated on your hard drive) is too small, the unarc.dll process will crash. Press the to open the Run dialog box. Type sysdm.cpl and hit Enter to open System Properties. Navigate to the Advanced tab. Under the Performance section, click Settings .
After installation, restart normally.
Safe Mode loads only essential drivers, preventing third-party apps (antivirus, overlay tools, RGB software) from interfering. How to Fix "Unarc
may incorrectly flag decompression activities as suspicious, interrupting the process. Windows Security Virus & threat protection Manage settings and toggle Real-time protection
Uncheck "Automatically manage paging file size," select your drive, and set a . Try setting both initial and maximum to roughly 1.5x your total RAM (e.g., 12000 MB for 8GB RAM).
: Some high-core CPUs can cause instability during heavy decompression. , and hit Enter. Boot > Advanced options Number of processors and select a lower number (like 4 or 8). The error message usually appears on Windows PCs
The error code (or sometimes -14) with unarc.dll typically occurs during the installation or extraction of large, highly compressed software or game "repacks". It indicates a decompression failure , often caused by hardware limitations (like CPU overheating or RAM issues) or system software conflicts . Top Fix: Manage CPU and Power Settings
If you are encountering this error, follow this order of operations:
If none of these work, try moving the installer folder to the root of your drive (e.g., C:\Games\ ) to avoid issues with long file paths.
When you see the error code 14, it means this decompression process failed. The installer can't read the data correctly, so it stops and reports this generic error. Think of unarc.dll as the messenger; you need to find the real culprit causing the failure.
If absolutely nothing works, the repack group (FitGirl, DODI, etc.) usually has a support thread. Post your system specs (CPU, RAM, Windows version) and mention you tried disabling AV and increasing pagefile.