If you see the error message "VAN: INCOMPATIBLE SOFTWARE", it means one of your driver files isn't compatible with Vanguard.
How do I fix the VAN: Incompatible Software error?
Removing the incompatible file is generally the fastest way to fix this issue. The error message lists exactly which file that is.
Example:
Detected File: C:\Windows\System32\IncompatibleDriver.sysHOW TO REMOVE YOUR INCOMPATIBLE FILE
Removing Your Incompatible File
- Identify the Incompatible File
When Vanguard blocks a file, it usually displays the file path (e.g., C:\Windows\System32\drivers\xxx.sys).
Take a screenshot of the error message to know exactly which file is causing the issue.
- Remove/Uninstall the Incompatible Software
- Open the Windows Control Panel, or go to or Settings > Apps > Installed Apps.
- Search for the software mentioned in the error message (e.g., old drivers, outdated monitoring tools, or RGB lighting software) and Uninstall it.
- Restart your computer immediately after uninstalling.
- If uninstalling fails: Manually Delete the Flagged File
If the software cannot be uninstalled, you can manually remove the offending .sys file:
- Navigate to the file path shown in the error (e.g., C:\Windows\System32\drivers\).
- Delete the flagged .sys file (e.g., inpoutx64.sys or similar).
- Restart your PC.
Other Troubleshooting
If you're still getting the same error even after uninstalling the flagged file, there are a few other steps that may help:
Enable Secure Boot and TPM 2.0 (For Windows 11)
If you are getting a "Vanguard out of compliance" error (VAN 9003), your system likely requires Secure Boot.
- Restart your computer and enter the BIOS/UEFI (usually by holding F2, F12, or Del while restarting).
- Locate the Boot settings and enable Secure Boot.
- Ensure CSM (Compatibility Support Module) is Disabled.
- Enable TPM 2.0 (sometimes called PTT or fTPM).
- Save and exit.
Repair/Reinstall Vanguard
Reinstalling Vanguard can also resolve the issue:
- Uninstall Riot Vanguard via Control Panel.
- Restart your computer.
- Open the Riot Client and let it reinstall Vanguard, then restart again.
Disable Your Proxy or VPN
Using a proxy or VPN can result in various errors on Vanguard, and it's always better to turn them off when troubleshooting.
Disable a VPN (Quick Fix)
Click the VPN icon in the system tray and disconnect.
OR
Go to Settings > Network & Internet > VPN and toggle it Off.
Uninstall a VPN
- Go to Settings > Apps and uninstall the VPN application.
- Then, go to Network & Internet > Advanced network settings > Network reset, as shown in the Riot Games support article.