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The VAN9003 error indicates an issue with Secure Boot, despite it being enabled. Here are a few steps to resolve this:
1. Verify Secure Boot Enabled Correctly:
- Restart your computer and enter the BIOS/UEFI settings (usually by pressing
F2, Delete, or Esc during boot-up).
- Check if Secure Boot is enabled. If it is, disable it, save and exit, then re-enter the BIOS and enable it again.
2. Check BIOS/UEFI Mode:
- Make sure your system is using UEFI mode instead of Legacy BIOS. Enabling Secure Boot on a system configured with Legacy BIOS can cause issues.
- You can check if your system is in UEFI mode by opening the Run dialog (Windows + R), typing msinfo32, and looking for "BIOS Mode" listed as "UEFI".
3. Update BIOS/UEFI:
- Ensure your BIOS/UEFI is up to date. Check your motherboard manufacturer's website for the latest version and update instructions.
4. TPM Configuration:
- Ensure TPM (Trusted Platform Module) is enabled in the BIOS, as Vanguard might require it.
If you have followed these steps and the error persists, consult these resources for more details:
- Vanguard Restrictions & VAN9003 Troubleshooting
- Troubleshooting VAN9001 & VAN9003 Errors
For further assistance, you can submit a ticket to Riot Games Support.
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