Tampermonkey®
by Jan Biniok
A: You likely have a corrupted download or antivirus blocking the temp folder. Try Method 4 (disable AV) and Method 6 (verify files).
If nothing works, your system core libraries might be damaged.
If you search for a fix to this error, you will wade through a swamp of "fake" DLLs. Countless websites offer a downloadable isdone.dll file that promises to fix the issue if you drop it into your System32 folder. dodi repack isdone.dll error
Do not do this.
Replacing system DLLs with random downloads from the internet is a security nightmare and almost never fixes the specific compatibility issue causing the error. A: You likely have a corrupted download or
The real solution requires a "surgical" approach to your system resources:
| Cause | Solution |
|-------|----------|
| Insufficient disk space | Ensure you have at least 2x the repack size free (e.g., 50GB repack → 100GB free). |
| Windows Defender / Antivirus blocking | Temporarily disable real-time protection, or add the install folder + temp folder as exclusions. |
| Corrupted download | Re-check torrent hash or re-download the repack. Dodi repacks include .md5 checksums – verify all .bin files. |
| Running installer from a compressed folder | Extract the repack to a normal folder (not directly from a ZIP/RAR opened in Explorer). |
| Insufficient RAM / Page file | Increase virtual memory (page file) to 16–20 GB. |
| Unicode or long path names | Install to a short path like D:\Games\GameName (avoid desktop, C:\Program Files, or special characters). |
| Corrupt Windows temp environment | Clear %temp% and C:\Windows\Temp. Set system TEMP/TMP to C:\Temp (short path). |
| Overclocking / unstable RAM | Run RAM at default JEDEC speeds (disable XMP/DOCP temporarily). | isdone
isdone.dll / unarc.dll errors indicate corrupted or failed decompression during installation—commonly caused by bad archive files, insufficient RAM/virtual memory, disk errors, or antivirus interference.
Before fixing the issue, you need to understand it. IsDone.dll is a dynamic link library file associated with InnoSetup – the software used by Dodi and many other repackers to compress and package games.
When you run a Dodi repack, the installer extracts the game files from the archive. The IsDone.dll file manages the "unarc" (Unarchiver) process. When this process fails, you get the error.
Common variations of the error include: