Microsoft Windows Error Code 0xC0000372: How to Fix It

Medium 1-2 hours Medium Severity Verified June 2026
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Error Code
0xC0000372
Brand
Microsoft Windows
Product Type
operating_system
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
1-2 hours
Error code 0xC0000372 indicates that a security identifier (SID) encountered by Windows is not associated with any user account. This usually happens when user profile data becomes corrupted, often due to a failed update or permission issue. The error can prevent you from logging in or accessing certain applications.
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Tools You'll Need

How to Fix Error Code 0xC0000372

  1. Boot into Safe Mode

  2. Backup User Profile Data

    Do not skip this step as profile repair may require data restoration.

  3. Check and Repair System Files

  4. Delete Corrupted User Profile Registry Entries

    Be very careful editing the registry. Incorrect changes can cause system instability.

  5. Create a New User Profile

  6. Restore User Data to New Profile

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When to Call a Professional

If you cannot boot into Safe Mode, lack administrator access, or are uncomfortable editing the registry, seek professional help. Also, if the error persists after these steps, there may be deeper system corruption or hardware failure.

Frequently Asked Questions

What causes Windows error 0xC0000372?
This error occurs when Windows encounters a security identifier (SID) that is not associated with any user account. Common causes include corrupted user profile, failed system updates, registry errors, or malware.
Can I fix error 0xC0000372 without losing data?
Yes, by backing up your files before repairing the profile. The deletion of old profile registry entries may require you to copy data to a new profile, but your files remain accessible.
Do I need to reinstall Windows to fix this error?
Reinstallation is usually not necessary. Following the steps outlined above (Safe Mode, SFC/DISM, registry cleanup, new profile) resolves the issue in most cases.
Is error 0xC0000372 related to malware?
While malware can corrupt user profiles, the error itself is often a symptom of corruption rather than an active infection. Run a full antivirus scan to rule out malware.
How long does it take to fix error 0xC0000372?
Depending on your familiarity with the steps, it typically takes 1-2 hours. This includes backup, system scans, registry editing, and creating a new profile.

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