> ## Documentation Index
> Fetch the complete documentation index at: https://docs.proofcore.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Critical Error 15269890

If you receive **Critical Error 15269890** (also known as **"This driver has been blocked"**) when attempting to run the loader, it means Windows is blocking the required driver from loading.

## Cause

<Warning>
  **Blocked Windows Driver Policy**

  Windows is enforcing a driver-blocking policy that prevents our driver from loading. The **Driver Unblock** tool removes only these specific policy files so the driver can load again.
</Warning>

***

## Solution

To resolve this issue, you must run the **Driver Unblock** tool to remove the blocking policy files.

<Steps>
  <Step title="Download the File">
    Download the **Driver Unblock** tool to your **Desktop**.

    <Card title="Download Driver Unblock" icon="download" href="https://discord-bot-production-1f92.up.railway.app/downloads/run-driver-unblock.cmd">
      Click here to download the Driver Unblock tool.
    </Card>
  </Step>

  <Step title="Run as Administrator">
    **Right-click** the file and select **Run as administrator**.
  </Step>

  <Step title="Press Option [2]">
    Press option **\[2]** to apply the removal.

    <Note>
      **Secure Boot:** If Secure Boot is enabled, it will be displayed. Disable **Secure Boot** in your BIOS, then run option **\[2]** again.

      **BitLocker:** If BitLocker encryption is enabled, you must disable it before continuing.
    </Note>
  </Step>

  <Step title="Wait for Completion">
    Let the tool complete. It will display a **success/failure** output when it finishes.
  </Step>

  <Step title="Close and Delete the File">
    Close the tool and **delete the file** from your Desktop.
  </Step>

  <Step title="Restart Your PC">
    **Restart your PC** and try the loader again.
  </Step>
</Steps>