Intense decompression tasks can cause modern CPUs to overheat, leading to processing errors.
If the virtual memory fix didn't work, the installer files themselves may be to blame. Here's how to check.
Open the Start menu, type Advanced system settings , and open it.
On high-end or laptop CPUs (especially Intel 13th/14th Gen), overheating during decompression can trigger Error 14. how to fix unarc.dll returned an error code 14
Sometimes, a simple reboot can resolve the issue. Restart your computer and try to install or run the program again. If the error persists, proceed to the next method.
If your physical RAM is overwhelmed, Windows can use your storage drive as temporary "Virtual Memory".
Delete everything in the folder. Skip any files currently in use. Repeat this for the Run as Administrator : Right-click the installer and select Run as administrator to ensure it has the necessary permissions to write files. Disable Security Software : Temporarily turn off Windows Defender Intense decompression tasks can cause modern CPUs to
Highly compressed repacks force your processor to compute heavily compressed data at blistering speeds. If your CPU overheats or experiences minor computing mismatches, Windows drops the operation with Error Code 14. Lowering performance limits slightly during installation often bypasses the issue: Method A: Lower the Maximum Processor State
: Insufficient space or corrupted data in temp folders can block decompression.
Go to > Performance > Settings > Advanced tab. Click Change under Virtual Memory. Deselect "Automatically manage paging file size." Open the Start menu, type Advanced system settings
Expand and then expand Maximum processor state .
This error frequently appears when installing "repack" games or large applications that use the unarc.dll and isdone.dll libraries to unpack highly compressed data. Code 14 specifically indicates a failure during the unpacking process, often linked to or file corruption . Step-by-Step Fixes for Error Code 14 1. Clear Temporary System Files