⚠️ 2 verified solutions available for Error 8485 — Last updated 2026-03-22
Error 8485 📋

Fix ERROR_DS_SRC_AND_DST_NC_IDENTICAL — Windows Error Code 8485

Error 8485 (ERROR_DS_SRC_AND_DST_NC_IDENTICAL) is a Windows Active Directory error that occurs when source and destination for the cross-domain move operation are identical. caller should use local move operation instead.. This guide provides step-by-step solutions to resolve this issue.

🏷️ Code: 8485 📛 ERROR_DS_SRC_AND_DST_NC_IDENTICAL 📅 Updated: 2026-03-22 ⏱️ 2 Solutions
⚡ Quick Fix

Rejoin the Domain: Open System Properties → Change → set to Workgroup → OK → Restart

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🐞 Auto-Fix Script for Error 8485
⚠️ How to use: Open PowerShell as Administrator, paste the code above, and press Enter.
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📑 Table of Contents
What is Error 8485? Common Causes Step-by-Step Solutions Prevention Tips Related Errors

💡 What is Error 8485?

Windows System Error Code 8485, known as ERROR_DS_SRC_AND_DST_NC_IDENTICAL, is a Active Directory error that occurs during Active Directory and directory services. The error indicates that: Source and destination for the cross-domain move operation are identical. Caller should use local move operation instead. When this error is encountered, the Windows operating system was unable to complete the requested operation within the directory services subsystem. The error code 8485 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_DS_SRC_AND_DST_NC_IDENTICAL 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 Active Directory and directory services is essential for effective troubleshooting.

⚠️ Common Causes

  • System resource conflict: Source and destination for the cross-domain move operation are identical. Caller should use local move operation instead.
  • Computer lost domain trust
  • Time sync beyond Kerberos limit
  • DNS preventing DC discovery
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Diagnosing Memory Management and RAM Faults in Windows 10 & 11

An encyclopedia on diagnosing physical RAM defects, virtual memory (paging file) corruption, and resolving MEMORY_MANAGEMENT BSODs.

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✅ Step-by-Step Solutions

1 Rejoin the Domain
  1. Open System Properties → Change → set to Workgroup → OK → Restart
  2. Then change back to Domain → enter domain name → OK → Restart
  3. This re-establishes the trust relationship
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2 Advanced Diagnostic for ERROR_DS_SRC_AND_DST_NC_IDENTICAL
  1. Open Windows Event Viewer (eventvwr.msc)
  2. Navigate to Windows Logs → System to find Event ID 8485
  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

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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 "*8485*" -or $_.Message -like "*ERROR_DS_SRC_AND_DST_NC_IDENTICAL*"} | Format-List

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

🛡️ Prevention Tips

  • Ensure reliable NTP sources
  • Monitor DC health with dcdiag
  • Use redundant DNS servers
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Last updated: 2026-03-22
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Based on Official Microsoft Documentation
Solutions Tested on Windows 10 & 11
Error codes sourced from Microsoft Win32 SDK. Updated 2026-03-22.
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