Multikey.sys — Windows 11

1. Executive Summary

Windows 11 requires all kernel-mode drivers to be digitally signed by a trusted certificate authority.

, you can generate a system report using these standard Windows 11 tools: System Information (NFO) Report multikey.sys windows 11

Change Start value to 4 (Disabled) instead of 1 (System) or 0 (Boot). Press Win + R , type sigverif , and press Enter

1. Press Win + R, type sigverif, and press Enter.
2. Run the File Signature Verification tool.
3. If multikey.sys is unsigned or shows an invalid signature, scan your PC with Windows Defender or Malwarebytes.

Part 5: How to Remove or Disable multikey.sys on Windows 11

• Remove it immediately to restore system stability, enable Memory Integrity, and secure your PC.
• Update it by finding a signed, Windows 11-compliant driver from your hardware vendor.

It is most commonly installed by:

Practical guidance (concise)