Error Code Portal
MicrosoftWindows Win32Error code

8495

ERROR_DS_CR_IMPOSSIBLE_TO_VALIDATE

Alternative forms: 0x0000212F · 0x212F · ERROR_DS_CR_IMPOSSIBLE_TO_VALIDATE · 0x8007212F

What does this code mean?

Code 8495 · An issue reported by Windows Win32.

Official explanation · Original text

The directory cannot validate the proposed naming context name because it does not hold a replica of the naming context above the proposed naming context. Please ensure that the domain naming master role is held by a server that is configured as a global catalog server, and that the server is up to date with its replication partners. (Applies only to Windows 2000 Domain Naming masters.)

Troubleshooting and diagnostic links

First check that the document's product, version, and environment match your situation.

Source and terms of use

System Error Codes (8200-8999) (WinError.h) ↗

Creator: Microsoft and MicrosoftDocs contributors
License: Creative Commons Attribution 4.0 International
Checked on: 2026-11-12

Modifications: Extracted numeric codes, symbolic names and English message text; converted Markdown/HTML to plain text and normalized whitespace; added Korean product context, namespace labels, status classification and separately labeled official links. No machine translation of message text.

Source details · Original licenses and notices