4 Ways to Fix the Valorant VAN9001 Error on a Windows PC

The VAN9001 error is an issue that some Valorant players have needed to resolve. The VAN9001 error message says, “This build of Vanguard requires TPM version 2.0 and secure boot to be enabled in order to play.” That error message pops up for some Valorant players when they try to start the game. Its message highlights one reason for the error occurring, but there are a few possible ways to resolve it. This is how you can fix the Valorant VAN9001 error on a Windows PC.

Enable TPM 2.0 and Secure Boot via BIOS/UEFI Settings

The most common cause for the VAN9001 error occurring is that secure boot and TPM 2.0 aren’t enabled on players’ PCs. Those are Windows security features that need to be enabled to play Valorant. However, enabling them is not entirely straightforward since TPM and secure boot are BIOS/UEFI settings not accessible in Windows. You’ll need to set those settings to enabled within your PC’s BIOS or UEFI.

How exactly you can access those settings varies between different PC models. BIOS and UEFI setting menus don’t have universal menu interfaces. So, I cannot provide specific instructions for enabling TPM 2.0 here. These manufacturer pages provide instructions for how you can enable secure boot and TPM 2.0 on different PC models:

Secure Boot

• Lenovo
• HP
• Dell
• Acer
• Razer

TPM

• Dell PC
• HP PC
• Lenovo PC
• Microsoft’s TPM support page

Enable the Require Additional Authentication at Startup Policy

Some users have confirmed that enabling a Require additional authentication policy has fixed the VAN9001 error on their PCs. To apply this possible resolution, you will need a Windows 11/10 Pro or Enterprise PC with Group Policy Editor. This is how you can enable the Require additional authentication at startup policy on a Windows PC.

1. Activate the Windows tool for finding files by clicking its taskbar button or box.
2. Next, enter a gpedit.msc search phrase to find that tool.
3. Click gpedit.msc to access Group Policy Editor.
4. Double-click Computer Configuration to extend that category.
5. Next, click Administrative Templates > Windows Components > BitLocker Drive Encryption > Operating System Drives.
   
   

   The Operating System Drives policy

6. Double-click the Require additional authentication at the startup policy.
7. Click on the policy’s Enabled radio button.
8. Select the checkbox for the Allow BitLocker without a compatible TPM setting.
   
   

   The Require additional authentication at the startup policy

9. Click Apply and OK to set the policy and exit Group Policy Editor.
10. Restart Windows after setting the policy.

Clear Valorant’s Cache Data

If the VAN9001 error persists after applying the potential resolutions above, try clearing Valorant’s cache data. Doing this might clear corrupted cache data causing the issue to occur. This is how you can clear Valorant’s cache data.

1. Utilize the Windows logo + R hotkey to access Run.
2. Enter AppData into Run and click OK.
3. Click Local to access that folder.
   
   

   The local folder

4. Open the Valorant > Saved subfolders.
5. Next, right-click the Crashes subfolder to select its Delete option.
6. Open webcache to erase the GPUCache subfolder within it.
7. Select to erase the Cache folder.

Disable Virtualization

Users also confirm they’ve fixed the VAN9001 error by disabling virtualization in Windows. You can temporarily disable virtualization by exiting a Command Prompt command as follows.

1. Activate the Windows search tool and enter cmd into the file finder box.
2. Select Run as administrator for the Command Prompt app shown in the search tool.
3. Input and execute this command: bcdedit /set hypervisorlaunchtype off.
   
   

   The bcdedit /set hypervisorlaunchtype off command

4. Close out of the Command Prompt and restart your PC.

You may need to reapply this potential resolution after Windows updates that change the virtualization setting. However, you can permanently disable virtualization via your PC’s BIOS/UEFI settings. This Microsoft guide to enabling virtualization provides further details about how to access such settings.

There aren’t many possible ways to fix the VAN9001 error on Windows PCs. However, the methods above are widely confirmed to resolve that issue. You can also discuss this issue with the Riot Support service by clicking Submit a Ticket on this help page.