Microsoft Windows Error Code 0xC0000034: How to Fix It

Medium 15-30 minutes Medium Severity Verified June 2026
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Error Code
0xC0000034
Brand
Microsoft Windows
Product Type
operating_system
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
15-30 minutes
Error code 0xC0000034 (STATUS_OBJECT_NAME_NOT_FOUND) appears during Windows startup, usually as a blue screen or boot failure. It means the Boot Configuration Data (BCD) is missing or corrupted, preventing Windows from finding the necessary boot files. This guide will help you repair the BCD and get your PC running again.
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Tools You'll Need

How to Fix Error Code 0xC0000034

  1. Boot from Windows Installation Media

    Back up your data if possible before proceeding. If you cannot boot, you may need a data recovery specialist.

  2. Open Command Prompt in Recovery Environment

  3. Identify and Select the Windows Drive

    Be careful not to select the wrong drive. If unsure, look for the volume that contains the 'Boot' folder.

  4. Assign Drive Letters (if needed)

  5. Rebuild the Boot Configuration Data (BCD)

  6. Run Further Boot Repairs

  7. Test the Boot

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When to Call a Professional

If these steps do not resolve the error, or if you are uncomfortable using the Command Prompt, consider taking your PC to a technician. Additionally, if you suspect a hardware failure (e.g., hard drive failure), professional diagnosis is recommended.

Frequently Asked Questions

What causes Windows error 0xC0000034?
This error is typically caused by a corrupted or missing Boot Configuration Data (BCD) file. It can also result from incorrect disk partitioning, failed Windows updates, or hard drive issues.
Can I fix error 0xC0000034 without a Windows installation disc?
You may be able to use the built-in recovery options if your PC has a recovery partition. Access it by pressing a specific key (e.g., F11) during startup. Otherwise, you will need a Windows installation USB or DVD.
Will I lose my data if I fix this error?
No, these steps do not delete personal files. However, if the BCD repair fails and you need to reinstall Windows, your data may be at risk. Always back up your data if possible.
What should I do if bootrec /fixboot gives 'Access Denied'?
Run the command 'bootsect /nt60 SYS /mbr' from the Command Prompt to fix the boot sector, then try /fixboot again.
Is error 0xC0000034 the same as blue screen of death?
Yes, this error often appears as a blue screen during startup, halting the boot process. It may also appear as a black screen with error text.

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