Hello, I Open The Client After The Update And My Windows 11 anti-virus finding All time virus in it, i close the anti-virus and the app still doesnt working write something missing... what can i do now? (PC 64Bit)

Edited October 8, 2025Oct 8 by Makiz

Hello @Makiz,

 

Sorry to hear you are having difficulties playing the game.

 

At the moment, when some players attempt to update their client, Windows Defender labels one or two of the files as a Trojan virus. This is because some of PROs files are encrypted, which can trigger a false-positive. Windows Defender will then quarantine the file to protect your computer. Some players might get a pop up saying "Failed to load il2cpp", others have an issue when the patcher is extracting the files.

 

If you are still having problems, we recommend downloading the 32-bit version of PRO instead of the 64-bit version. The 32-bit version doesn’t seem to cause issues with Windows Defender at the moment. There's no difference in game and barely any difference in performance. This also allows you to run with the game without attempting to bypass your systems defenses. 

 

Please let me know if you are able to play with the 32-bit version.

 

I have the same problem. I removed the game and downloaded the 32-bit version. I got blue screen from defender telling me that this program might be a risk because of unknown publisher. I chose still run the program. And then I stil got the same " Failed to load il2cpp". Any sugestions?

Hi @Kurtistheword

 

If you are unable to get the 32-bit version working (I recommend re-trying after you remove all PRO files and perform a reboot, just incase), there are a few potential work arounds

 

There are a couple methods to bypass this issue

 

1) In windows security, click on the "Virus & threat protection". Here you can click on "protection history", which will show the threat that was quarantined. Clicking on it will probably bring up a Windows Security permission. Once accepted, you can click actions to restore. This restores the file, allowing the game to access it. 

 

Sometimes this doesn't solve the problem though. Now we'll apply an exception to your anti-virus, which is will force it to ignore files in a certain location. I would recommend removing your PRO files from your PRO folder.

 

2) In windows security, click on the "Virus & threat protection".  Under "Virus & threat protection settings", click "Manage settings". Scroll down to the section for "Exclusions", and then click "Add or remove exclusions". After accepting the Windows Security request, you can click "+ Add an exclusion". You will then pick the folder that will contain your PRO game files. Now Windows Defender will ignore this folder when looking for security threats.

 

At this point, I would recommend emptying your trash and performing a reboot. Next, download a fresh install of the PRO client (direct download from the PRO website), and place the files in your exclusion folder. You can now launch the game from this folder, and it should bypass the security restrictions and allow you to play PRO. 

 

 

If you are not comfortable doing this, it is then recommended to wait a few days.

 

Per one of the developers yesterday, "I always upload the files to the most popular antivirus programs, and after some time, they stop getting flagged. The issue is worse right now because I had to release new clients. Normally, I build, upload the files, and release them later, but that process doesn't work as smoothly when I can to upload hotfixes....it should settle down once the file stops getting flagged, which usually takes about one to two days. Its often faster, but we have absolutely no control over that."

 

 

If you attempt these steps, please let me know if they solve your issue or if it continues to persist. 

Thnx for the time you took write this extensive reply. I appreciate it a lot. Keep up the great work. I will wait till Thursday to try again. 

3 hours ago, Adiuvo said:

Hello @Makiz,

 

Sorry to hear you are having difficulties playing the game.

 

At the moment, when some players attempt to update their client, Windows Defender labels one or two of the files as a Trojan virus. This is because some of PROs files are encrypted, which can trigger a false-positive. Windows Defender will then quarantine the file to protect your computer. Some players might get a pop up saying "Failed to load il2cpp", others have an issue when the patcher is extracting the files.

 

If you are still having problems, we recommend downloading the 32-bit version of PRO instead of the 64-bit version. The 32-bit version doesn’t seem to cause issues with Windows Defender at the moment. There's no difference in game and barely any difference in performance. This also allows you to run with the game without attempting to bypass your systems defenses. 

 

Please let me know if you are able to play with the 32-bit version.

 

hello,

again the same problem even with 32bit it says error for virus and when i off the anti-virus it says "Failed to load il2cpp"

Bummer.

 

For the bypass method, make sure to restore the quarantined file. Once restored, delete all files out of the folder (and probably the trash can as well). To try to remove potential issues, create a new folder location for PRO, and apply the exclusion method previously explained above. Reboot your PC and again verify the new folder location is excluded from your anti-virus. Then download a fresh PRO Client from our website. Extract the files into that excluded folder, and then attempt to play the game. 

If that doesn't work, the only other method I can think of involves briefly turning off your anti-virus. Its a similar process to what you've been trying

The steps are:

1. Delete your current client.
2. Deactivate your anti-virus program.
3. Download the client again.
4. Put the previously missing files in your antivirus whitelist.
5. Activate your anti-virus program.
6. Start your PROClient.exe.

There's a similar method mentioned in the #support channel in the PRO Discord (with video) that might also be of help if these ones are not working
 

I'll forward to the devs the issues with the 32-Bit client as well

The antivirus is complaining about a specific file and constantly moving it to quarantine - "GameAssembly.dll". 

 

In both versions (x64 and x86), the antivirus complains about this file and deletes it. I checked.

 

I ran the file through VirusTotal - there are some issues.

 

If you're interested in the results - https://www.virustotal.com/gui/file/bcecaee4c97bb65cf2a14f1fed6b6f6020d94df28074e56c37c9ac7c29876e28/detection

 

Maybe the developers' repository is infected and they don't even know it !? 

 

Sorry for my English – I'm using Google Translate.

Edited October 6, 2025Oct 6 by Zjamka

Hi @Zjamka,

 

Yes, this is one of the files that Windows Defender takes issue with. However, PRO is obfuscated with Themida, which antivirus programs don't like. Thats why the file gets flagged, and why you are seeing it through VirusTotal. It's not due to an infection. 

 

You can read more about Themida here