Microsoft Windows Error Code 0xC0000045: How to Fix It

Medium 30-60 minutes Medium Severity Verified June 2026
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Error Code
0xC0000045
Brand
Microsoft Windows
Product Type
operating_system
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
30-60 minutes
Error code 0xC0000045 (STATUS_INVALID_PAGE_PROTECTION) on Windows indicates that the system attempted to access memory with invalid page protection flags. This often occurs due to corrupt system files, faulty drivers, or problematic software. Follow this guide to troubleshoot and resolve the error.
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Tools You'll Need

How to Fix Error Code 0xC0000045

  1. Run the System File Checker (SFC)

    Do not close the Command Prompt until the scan finishes.

  2. Use DISM to Repair System Image

    Ensure you have a stable internet connection as DISM may download files from Windows Update.

  3. Update or Roll Back Problematic Drivers

  4. Uninstall Recently Installed Software

  5. Check for Memory Issues (RAM)

    Back up your work before restarting.

  6. Perform a Clean Boot

  7. Run a Full Antivirus Scan

  8. Reset or Reinstall Windows

    Back up important files before resetting.

Parts You May Need

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When to Call a Professional

If the error persists after a Windows reset or you suspect failing hardware (RAM, SSD), contact a professional technician for hardware diagnostics.

Frequently Asked Questions

What causes error 0xC0000045 on Windows?
This error (STATUS_INVALID_PAGE_PROTECTION) is typically caused by corrupt system files, faulty drivers, memory issues (RAM), malware, or problematic software.
Can error 0xC0000045 damage my computer?
No, the error itself won't physically damage hardware, but it may cause system instability or crashes. Underlying issues like faulty RAM or malware should be addressed promptly.
Does error 0xC0000045 appear in a blue screen?
Yes, this error often appears as a Blue Screen of Death (BSOD) with the stop code 0xC0000045.
How do I fix error 0xC0000045 without reinstalling Windows?
Try the steps in order: run SFC, DISM, update drivers, uninstall recent software, check RAM, clean boot, and scan for viruses. These often resolve the issue without a full reinstall.
Is error 0xC0000045 related to a specific Windows update?
It can be triggered by a faulty update. Try uninstalling the most recent update by going to Settings > Update & Security > View update history > Uninstall updates.

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