Digital Signature Verification Failure (0xC0000428)

What is 0xC0000428?

Error code 0xC0000428 indicates that Windows Boot Manager could not verify the digital signature of a recently installed driver or system file. This prevents Windows from starting up properly.

Common Causes

• Outdated driver files with expired or invalid digital signatures
• Corrupted boot configuration data (BCD)
• Unsigned drivers installed on 64-bit systems with driver signature enforcement enabled

Step-by-Step Fix Guide

• 1
  Disable Driver Signature Enforcement from the Advanced Startup Options menu

  Temporarily disabling integrity checks allows Windows to boot past the unsigned file block.

• 2
  Use Bootrec to repair the Boot Configuration Data (BCD)

  Rebuilding the BCD repairs incorrect bootloader entries linked to missing signatures.

• 3
  Roll back or uninstall the problematic driver in Safe Mode
• 4
  Update the offending driver file

Commands & Diagnostics