Unarc.dll error code 6 installation typically indicates that the installer is unable to read or decompress the required data
Lack of available memory often causes decompression to fail. View advanced system settings from your Start menu. tab, click Performance tab again and click Virtual memory Automatically manage paging file size for all drives Select your primary drive (usually C:), choose Custom size , and set the Initial size Maximum size 2. Clear Temporary Files Clear Temporary Files Open System Properties by typing
Open System Properties by typing sysdm.cpl in the Run dialog ( Advanced Troubleshooting Steps
Short Pathing: Rename your installation folder to something short and simple (e.g., C:\Games\FIFA13). Avoid using spaces or special characters in the folder name, as old decompressors can struggle with complex file paths . choose Custom size
Run as Administrator: Ensure the installer is launched with administrative privileges to avoid permission-related blocks during the unpacking process. Advanced Troubleshooting Steps