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This error message indicates a Secure Boot configuration issue with your system. Even though you have Secure Boot and TPM 2.0 enabled, your system might still be configured incorrectly. To resolve this, ensure that your system is not using Legacy BIOS (MBR) mode. Secure Boot requires UEFI mode to function properly.
Here’s what you can do:
1. Check BIOS Mode:
- Press Windows + R, type
If the problem persists, you might need to reinstall Windows using UEFI mode. Here are some support articles that might help: - Troubleshooting the VAN9001 or VAN9003 Error on Windows 11 - Vanguard Restrictions
msinfo32, and press Enter.
- Look for “BIOS Mode.” It should say UEFI. If it says Legacy, you'll need to convert your drive from MBR to GPT and enable UEFI in BIOS settings.
2. Verify Secure Boot:
- Reboot your PC and enter the BIOS/UEFI settings (commonly by pressing Del, F2, or ESC during startup).
- Ensure Secure Boot is enabled within those settings.
- Save and Exit BIOS.
3. Convert MBR to GPT (if needed):
- Follow this guide: Convert MBR to GPT.
If the problem persists, you might need to reinstall Windows using UEFI mode. Here are some support articles that might help: - Troubleshooting the VAN9001 or VAN9003 Error on Windows 11 - Vanguard Restrictions
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