⚠️ 2 verified solutions available for Error 4394 — Last updated 2026-03-29
Error 4394 📋

Fix ERROR_REPARSE_TAG_MISMATCH — Windows Error Code 4394

Error 4394 (ERROR_REPARSE_TAG_MISMATCH) is a Windows DNS & WINS error that occurs when there is a mismatch between the tag specified in the request and the tag present in the reparse point.. This guide provides step-by-step solutions to resolve this issue.

🏷️ Code: 4394 📛 ERROR_REPARSE_TAG_MISMATCH 📅 Updated: 2026-03-29 ⏱️ 2 Solutions
⚡ Quick Fix

Flush DNS and Switch Servers: Open Command Prompt as Administrator

👇 See all 2 solutions below
🐞 Auto-Fix Script for Error 4394
⚠️ How to use: Open PowerShell as Administrator, paste the code above, and press Enter.
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📑 Table of Contents
What is Error 4394? Common Causes Step-by-Step Solutions Prevention Tips Related Errors

💡 What is Error 4394?

Windows System Error Code 4394, known as ERROR_REPARSE_TAG_MISMATCH, is a DNS & WINS error that occurs during DNS resolution and WINS name resolution. The error indicates that: There is a mismatch between the tag specified in the request and the tag present in the reparse point. When this error is encountered, the Windows operating system was unable to complete the requested operation within the DNS/WINS services subsystem. The error code 4394 is returned by the GetLastError() function and provides developers with a specific identifier to diagnose the root cause of the failure. The symbolic name ERROR_REPARSE_TAG_MISMATCH maps directly to this numeric code and is commonly referenced in Microsoft documentation, developer forums, and system logs. Understanding this error and its context within DNS resolution and WINS name resolution is essential for effective troubleshooting.

⚠️ Common Causes

  • System resource conflict: There is a mismatch between the tag specified in the request and the tag present in the reparse point.
  • DNS server misconfigured
  • Stale DNS cache entries
  • Hostname cannot be resolved
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✅ Step-by-Step Solutions

1 Flush DNS and Switch Servers
  1. Open Command Prompt as Administrator
  2. Run: ipconfig /flushdns
  3. Change DNS to Google (8.8.8.8) or Cloudflare (1.1.1.1)
  4. Run: ipconfig /registerdns
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2 Advanced Diagnostic for ERROR_REPARSE_TAG_MISMATCH
  1. Open Windows Event Viewer (eventvwr.msc)
  2. Navigate to Windows Logs → System to find Event ID 4394
  3. Look for associated warnings that occurred immediately before the system crashed
  4. Right-click the entry and export the log file for further analysis

🎬 Video Tutorials

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How to fix Error 4394 (Reparse Tag Mismatch)
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💻 Diagnostic Command

Run this PowerShell command to find related events in your system log:

Get-EventLog -LogName System -Newest 20 | Where-Object {$_.Message -like "*4394*" -or $_.Message -like "*ERROR_REPARSE_TAG_MISMATCH*"} | Format-List

💡 Open PowerShell as Administrator, paste the command above, and press Enter.

🛡️ Prevention Tips

  • Use reliable DNS (8.8.8.8 or 1.1.1.1)
  • Flush DNS cache periodically
  • Monitor DNS resolution performance
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Last updated: 2026-03-29
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Based on Official Microsoft Documentation
Solutions Tested on Windows 10 & 11
Error codes sourced from Microsoft Win32 SDK. Updated 2026-03-29.
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