Alex Ruben
How To Complete the FitGirl Repack Full Installation Successfully in 2025
This isn’t your usual step-by-step, because honestly, installing these repacks can be kinda frustrating sometimes. You run into errors like ISDone.dll, Unarc.dll, or missing files — not fun. So, this guide aims to cover some practical tricks I’ve found help avoid those headaches and get that game running without tearing your hair out. It’s not perfect, but hey, worth trying on your setup if you’re stuck with errors or slow installs. Expect some trial and error, but at least you’ll be better prepared to handle those annoying roadblocks and avoid the “corrupted archive” or “files not found” sorts of issues.
How to Fix Common FitGirl Repack Installation Problems in 2025
Enable Windows Defender Exclusions and Tweak Settings
This helps because antivirus programs often freak out with those huge unpacked files or weird installation sequences. If your system keeps deleting parts of the installer or throwing up false positives, adding the game’s folder as an exclusion can save a lot of trouble. Usually, that’s the culprit when files randomly go missing or the setup stalls. On some setups, this fixes problems the first time, on others, it might need a reboot or a re-scan to really kick in.
- Head over to Windows Security via Start.
- Go to Virus & threat protection.
- Scroll down and click on Add or remove exclusions.
- Click Add an exclusion and pick Folder.
- Navigate to where your game is being installed — typically under
C:\Program Files\FitGirl Repackor your custom folder — and select it. - Confirm by clicking Select Folder. This helps prevent the antivirus from messing with unpacked files or setup executables.
Re-enable Real-Time Protection After Installation
Kind of weird, but Windows tends to zorch things if you leave real-time protection disabled too long. It’s a small risk, but if you’re only disabling it during install, don’t forget to turn it back on afterward. That way, your PC stays protected against other threats. Also, sometimes, turning it off can cause more harm than good if you forget. A lot of the error-blaming comes from Windows mistakenly quarantining some necessary files, so reactivating protection can help things settle down.
- Go back to Windows Security.
- Navigate to Virus & threat protection.
- Switch Real-time protection back ON. It’s usually a toggle at the top or in the “Manage settings” page.
Check System Resources and Virtual Memory
If the installer keeps crashing or throwing DLL errors like ISDone.dll, it might be because your machine’s crammed for resources. These repacks often demand a lot of RAM and virtual memory, and Windows can freak out if there’s not enough.
- Right-click on This PC, choose Properties.
- Go to Advanced system settings > Performance > Settings.
- Select the Advanced tab and click on Change under Virtual Memory.
- Uncheck Automatically manage paging file size.
- Set a custom size — for example, your RAM (say 8 GB) multiplied by 1.5 or 2 for the initial and maximum size. Example: if you have 8 GB RAM, set Initial size and Maximum size to around 12288 MB.
- Hit OK, reboot, and see if that smooths out the installer.
Because of course, Windows has to make it harder than necessary, right? It’s always a balance between true optimization and just brute-force tweaking.
Use Reliable Setup Files and Check for Missing or Corrupt Archives
If your download is corrupted or incomplete, that’s a prime candidate for crashes when unpacking or installing. Always verify your archive integrity; sometimes the repack’s archive is patched or re-uploaded specifically because of defective downloads.
- If provided, check checksums (like MD5 or SHA-1) to make sure your files match the official ones.
- Consider re-downloading from the mirror or source if errors keep popping up. Sometimes, just a new dump fixes the problem.
Update Visual C++ Redistributables and Drivers
Missing or outdated runtimes are a common cause of DLL errors like Unarc.dll or ISDone.dll. Installing the latest Microsoft Visual C++ Redistributables (both x86 and x64) can fix those missing dependencies. Because sometimes, Windows is all about throwing little cryptic errors instead of telling you what’s missing or broken.
- Go to the Microsoft Visual C++ Redistributables page.
- Download and install both the x86 and x64 versions — it helps cover all bases.
From experience, this fixes a ton of random DLL errors without much fuss.
Wrap-up
Sometimes, it’s a mix of these steps that finally stops errors from popping up. The main thing is, don’t panic if an install fails — check your antivirus exclusion settings, resource limits, and file integrity first. Reboot after making changes, and give things a second try. Also, keeping Windows up to date helps patch bugs that might be causing weird hiccups with unpacking or file recognition.
Summary
- Add game folder as exclusion in Windows Security.
- Re-enable real-time protection after setup.
- Increase virtual memory if crashes happen.
- Verify your download files and skip corrupt archives.
- Install/update Visual C++ Redistributables.
So, what’s the verdict?
If these tricks work, getting that game installed and running should be a lot smoother. No guarantees, but it’s a decent shot. Sometimes, just messing with your AV settings or virtual memory is enough to break the curse of mysterious DLL errors. It’s honestly kind of annoying how many hoops Windows makes us jump through, but hey, at least now there are ways around the most common pitfalls. Fingers crossed this helps — worked for me a few times, so maybe it’ll do the same for others.