The isdone.dll and unarc.dll error code 7 typically occurs during game installations when the system fails to unpack or decompress large archive files. This is often caused by insufficient memory (RAM), disk space, or system stability issues during heavy decompression. Here are the best ways to resolve this error: 1. Increase Virtual Memory (Page File)
Security programs often flag the decompression process as suspicious, blocking the installer from writing files. isdonedll error unarcdll error7 best
The error often reads something like: