Microsoft Windows Error Code 0x00000028: How to Fix It

Medium 1-3 hours High Severity Verified June 2026
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Error Code
0x00000028
Brand
Microsoft Windows
Product Type
operating_system
Severity
High
DIY Difficulty
Medium
Estimated Fix Time
1-3 hours
Windows error code 0x00000028 (CORRUPT_ACCESS_TOKEN) occurs when the system's access token data structure becomes corrupted, preventing proper user authentication and access to system resources. This critical error can cause system crashes, blue screens, and prevent normal Windows operation.
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Tools You'll Need

How to Fix Error Code 0x00000028

  1. Restart Your Computer

    Save any open work before forcing shutdown as unsaved data will be lost.

  2. Boot into Safe Mode

  3. Run System File Checker

    Do not interrupt the SFC scan process as it may cause additional system corruption.

  4. Check Disk for Errors

    The disk check process may take several hours depending on drive size and errors found.

  5. Reset User Account Control Settings

    Leaving UAC disabled permanently reduces system security - remember to re-enable it.

  6. Run DISM Tool

  7. Create New User Account

    Back up important files from the old account before switching permanently.

  8. Perform System Restore

    System Restore will uninstall recently installed programs and updates - note what will be affected before proceeding.

Parts You May Need

RAM memory modules
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Hard drive or SSD
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RAM memory modules
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Hard drive or SSD
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RAM memory modules
Check Price on Amazon
Hard drive or SSD
Check Price on Amazon
RAM memory modules
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Hard drive or SSD
Check Price on Amazon
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When to Call a Professional

Contact a computer technician if the error persists after trying all steps, if you're uncomfortable using Command Prompt tools, or if you suspect hardware failure. Professional help is also recommended if the system won't boot into Safe Mode or if critical business data is at risk.

Frequently Asked Questions

What causes Windows error 0x00000028?
Error 0x00000028 is typically caused by corrupted system files, damaged user profiles, malware infections, faulty RAM, or recent Windows updates that didn't install correctly.
Can I fix error 0x00000028 without losing data?
Yes, most fixes preserve your data. However, always back up important files before troubleshooting. System Restore and creating a new user account are the safest options that typically preserve data.
Is error 0x00000028 a hardware or software problem?
It's usually a software issue related to corrupted access tokens or system files. However, faulty RAM or hard drive errors can also cause this problem, which is why running memory tests and disk checks is important.
How do I prevent error 0x00000028 from happening again?
Keep Windows updated, run regular antivirus scans, avoid forceful shutdowns, maintain adequate free disk space, and run periodic disk cleanup and system file checks to prevent corruption.

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