Error Code Portal
MicrosoftWindows Win32Error code

9906

DNS_ERROR_DP_FSMO_ERROR

Alternative forms: 0x000026B2 · 0x26B2 · DNS_ERROR_DP_FSMO_ERROR · 0x800726B2

What does this code mean?

Code 9906 · An issue reported by Windows Win32.

Official explanation · Original text

The operation failed because the domain naming master FSMO role could not be reached. The domain controller holding the domain naming master FSMO role is down or unable to service the request or is not running Windows Server 2003 or later.

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 (9000-11999) (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