Corrupted temporary files from previous failed attempts can cause conflicts. , and press Enter. Delete all files in this folder. Repeat for the folder (type in the Run dialog). 4. Verify System Files System File Checker (SFC) to repair any damaged Windows components. Open Command Prompt as Administrator and run the command: sfc /scannow Microsoft Learn A Note on Downloading DLLs
The error usually manifests as:
When these files fail, it means the installation process cannot unpack the game data properly, leading to the error, which signifies a failure to extract files, often due to file corruption, missing files, or inability to write to the hard drive. Causes of the "isdone.dll/unarc.dll" Error
The installer files themselves may be incomplete or damaged. Verified Fixes Increase Virtual Memory: isdone.dll isarcextract unarc.dll fix download manager
Windows restrictions can prevent the installation wizard from modifying or creating files in your C:\Program Files directory, triggering a decompression failure. Right-click the application's setup.exe file. Select and head over to the Compatibility tab. Check the box for Run this program as an administrator .
Q: How do I fix the "unarc.dll" error? A: To fix the "unarc.dll" error, try re-registering the unarc.dll file or downloading and installing the required files.
If the DLL files are missing or corrupt, you can download and install them. However, be cautious when downloading DLL files from third-party sources, as they may be infected with malware. Corrupted temporary files from previous failed attempts can
If the DLL files are intact but Windows has lost track of them, re-registering them via the command line resolves the conflict. Open .
To fix the "isdone.dll" and "unarc.dll" errors, follow these steps:
An error code -1 or -6 often indicates the archive data is corrupted. The best fix is to re-download the installer using a different method, as the files you have are likely incomplete or damaged. You can also try disabling your antivirus. Repeat for the folder (type in the Run dialog)
Try running the installer again. Remember to turn protection back on afterward. 4. Run SFC and DISM Scans
"An error occurred while unpacking: Unable to execute file in the temporary directory. Setup aborted." Or: "Unarc.dll returned an error code: -1, -5, -6, -12, -14, etc."
Getting an or unarc.dll error while extracting a massive game or software archive can be incredibly frustrating. These errors typically point to a failure during the decompression process, leaving your download manager or installer unable to unpack the required files.