Alex Ruben
How To Install FitGirl Repack Games Seamlessly in 2025
Running into errors during installation of FitGirl Repack games is more common than you’d think. Sometimes Windows security settings interfere, or missing files cause crashes. It can be pretty frustrating, especially if the setup suddenly decides to crash or throw the dreaded ISDone.dll error. The goal here is to get the game installed cleanly, without hiccups or missing files, so you can actually play and not waste hours troubleshooting. This guide covers the usual culprits and provides some practical steps to troubleshoot and fix the most common issues. Expect a mix of disabling security temporarily, restoring files, and setting proper exclusions—stuff that probably sounds simple but can feel sneaky on certain setups.
How to Fix Common FitGirl Installation Problems
Disable Windows Defender Real-Time Protection Temporarily
This might seem like a pain, but Windows Security’s real-time protection can block or interfere with game setup files. Disabling it temporarily helps ensure the setup runs smooth. On some machines, it’s weirdly aggressive, even when the files are fine. You’ll want to do this right before running the setup and turn it back on afterward.
- Hit the Windows key and type Windows Security.
- Open Windows Security from the search results.
- Click on Virus & threat protection from the sidebar.
- Click on Manage settings.
- Find Real-time protection and toggle it off. That’s it for a bit!
Not sure why, but on some setups turning it off is what finally allows the game installer files to process correctly. Just remember to turn it back on once you’re done.
Restore Missing Setup Files from Quarantine
If after extracting the game files, some setup files are missing or get flagged, they might have been quarantined by Windows Security’s antivirus. In some weird cases, the setup won’t run or throw errors because essential files are marked bad.
- Back to Windows Security.
- Select Protection history.
- Look through the list for any quarantined files related to the game or setup.exe.
- If you find them, click on each and choose Restore—that sometimes helps scripts or installer files run properly.
Remember, restoring files from quarantine might re-trigger antivirus alerts, so proceed with caution. Sometimes, it’s just false positives, especially if you got the files from a trusted source.
Run the Setup with Administrator Privileges and Compatibility Mode
Sometimes, Windows doesn’t play nice with installer files and needing admin rights or compatibility mode can help. Right-click that setup file, choose Run as administrator. If it still throws errors:
- Right-click, select Properties.
- Under the Compatibility tab, check Run this program in compatibility mode, and pick an older Windows version like Windows 7.
- Apply and launch the installer again.
This fix has worked on some setups that refuse to install normally, especially on newer Windows versions where compatibility issues pop up.
Check Disk Space and RAM
If you’re getting errors like ISDone.dll or setup crashes midway, make sure your disk has enough free space (at least twice the size of the game) and your RAM isn’t maxed out. On some rigs, inadequate resources cause the installer to crash. Clear some space or close all apps hanging in the background, and try again.
Adding the Game Folder to Antivirus Exclusions
To prevent Windows Defender or other security programs from flagging or messing with your game files during runtime, add that game directory as an exclusion. It’s a safe bet, especially if the game crashes after installation or during gameplay.
- Open Windows Security.
- Go to Virus & threat protection.
- Click Add or remove exclusions.
- Click Add an exclusion > choose Folder.
- Navigate to the folder where you installed the game and select it. Confirm.
This reduces chances of false positives killing your game files later on.
Re-enable Real-Time Protection After Setup
Once everything is installed and folder is added to exclusions, don’t forget to turn Windows Security back on. It’s not recommended to leave it off permanently, for obvious reasons.
- Back into Virus & threat protection.
- Toggle Real-time protection back on.
Extra Tips for Smoother Running
Because of course, Windows has to make it more complicated than it needs to be. If errors keep coming up, check:
- If you see the
ISDone.dllerror, first ensure you’ve got enough free disk space and RAM. Also, sometimes running the installer from a different drive (like your main SSD instead of a slow HDD) helps. - Make sure your system drivers—especially graphics and chipset—are up to date.
- Run the game as administrator after installation, and check if the game files are set to read-only.
- If crashes happen at launch, verify that you’ve installed all necessary redistributables like DirectX, Visual C++ Redistributables, and .NET frameworks.
- Look up the game’s specific requirements or known issues on forums or dedicated community sites.
Wrap-up
Getting a FitGirl Repack game to run smoothly can feel like a puzzle sometimes. But with a bit of patience—disabling security, restoring files, setting exclusions—you can usually bypass the biggest headaches. Just remember, a lot of problems boil down to security flags or resource limits. Fix those first, and the rest usually falls into place. Fingers crossed this helps someone avoid hours of twiddling their thumbs.
Summary
- Disable real-time protection before running setup, then turn it back on.
- Check quarantine logs for missing setup files and restore if needed.
- Run the installer as admin, try compatibility mode.
- Make sure there’s enough disk space and RAM.
- Add game folder to Windows Security exclusions.
- Re-enable security afterward and check for updates or dependencies.
Final Words
After following these steps, most people find their installation issues resolve. Sometimes, it’s just about tweaking a setting or two that Windows decided to lock down. If the game still refuses to install or run, do a quick search for specific error messages—you never know, someone might’ve posted a quick fix. Often, it’s just small details that trip up the process. Good luck, and hopefully this shaves off a few hours for someone.