Alex Ruben
How To Install Any FitGirl Repack Game Error-Free in 2025
Getting errors when installing FitGirl repacks is just part of the fun. Well, not really, but it feels like it. Sometimes, Windows security or antivirus stuff blocks or messes with the setup, especially with those tricky errors like ISDone.dll or Unarc.dll. Anyway, this walkthrough is aimed at stopping all that nonsense and helping the install go smooth. No need to be a tech wizard—just follow the steps, and you should get a clean install every time. And yeah, it applies whether you’re running a potato or a gaming beast.
How to Fix Common Install Errors for FitGirl Repack Games
Disable Windows Defender Temporarily
This step helps because Windows Security sometimes freaks out and blocks parts of the installer, especially if it thinks it’s malicious. It’s kinda weird, but turning off real-time protection helps the installer run without getting flagged or interrupted. Once the game’s installed, re-enable it just to play it safe.
- Go to Start Menu and type
Windows Security, then open it. - Choose Virus & threat protection from the sidebar.
- Click on Manage settings.
- Switch off Real-time protection.
On some setups, this doesn’t seem to work on the first try, and you have to toggle it off and on again. Or sometimes rebooting helps. Whatever, just get it off so the setup can do its thing.
Running the Installer with Administrative Privileges
This is sometimes the difference between a successful install or a bunch of errors. Windows can be damn picky about permissions, especially when writing files to Program Files or other protected folders.
- Right-click on the setup file.
- Select Run as administrator.
This helps Windows let the installer do what it needs without constantly asking or blocking. Usually, you get fewer errors about permissions or failed file writes.
Add the Install Folder as an Exclusion in Windows Security
Ever notice how Windows likes to scan everything constantly? Yeah, that can slow down or break game setups, especially with bigger files or extraction processes. Adding the folder to exclusions helps the installer or the game run smoother afterward.
- Go back to Windows Security
- Select Add or remove exclusions
- Click Add an exclusion and pick Folder
- Navigate to your install directory (like
C:\Games\FitGirl) and select it.
This isn’t officially recommended all the time, but it’s often the only way to avoid those “file missing” or “setup failed” errors later.
Temporarily Disable Antivirus Software (if needed)
Antivirus programs can be overzealous and see the installer or its unpacking process as a threat. If disabling Windows Security didn’t work, consider turning off your third-party antivirus temporarily. Just don’t forget to turn it back on after. Remember, of course, that you do this at your own risk—be sure the files are from a trusted source.
- Open your antivirus software.
- Look for options like Disable Protection or Turn Off.
- Set it for a short period—install, then re-enable.
This usually helps if the errors are related to unpacking or files being flagged as false positives.
Ensure the Downloaded Files Are Not Corrupted
This one is straight-up annoying but worth mentioning. Sometimes, errors pop up because the files got corrupted during download or extraction. Double-check the archive integrity if a checksum or MD5 was provided.
- If you used a torrent, try downloading again.
- Use tools like MD5 calculator or FileVerifier to verify checksums.
That way, you avoid ending up with a half-baked setup that throws errors right at the end.
Run the Installer in Compatibility Mode (Optional)
If the installer still keeps crashing or throwing errors, try running it in compatibility mode. Sometimes, older setup files act weird on latest Windows versions.
- Right-click setup file > Properties.
- Go to the Compatibility tab.
- Check Run this program in compatibility mode for and pick an older Windows version (like Windows 7 or XP).
- Hit Apply and run the setup again.
Not always necessary, but on some stubborn cases, helps a lot.
Reboot and Retry
Sometimes, all that’s needed is a quick restart. Windows can be glitchy with file locks or temporary issues, so reboot before trying again—especially after changing settings or disabling protections. On one setup it worked right after a reboot, on another it didn’t, so your mileage may vary. But it’s usually worth a shot.
Extra Tips & Common Problems
- If errors keep popping up, revisit the exclusion settings in Windows Security.
- Make sure your download isn’t corrupted—regrab if needed.
- Running the installer as admin helps avoid permission issues.
- Disabling antivirus temporarily isn’t ideal long-term, but for install, it’s a lifesaver.
Wrap-up
Getting a FitGirl repack installed without errors isn’t rocket science—just a bit of patience and toggling some protections. It’s frustrating, but these steps cover most headaches. Sometimes, the weirdest thing works—like re-enabling Windows Defender or running the setup as admin. Ultimately, this should save plenty of time and headaches. Fingers crossed this helps someone avoid heartburn during the install.
Summary
- Disable Windows Security temporarily.
- Run setup as administrator.
- Add game folder as exclusion.
- Disable antivirus if needed.
- Verify downloaded files are intact.
- Try compatibility mode if installation fails.
- Reboot between steps if errors persist.