Error Code Portal
MicrosoftWindows Win32Error code

8569

ERROR_DS_NO_BEHAVIOR_VERSION_IN_MIXEDDOMAIN

Alternative forms: 0x00002179 · 0x2179 · ERROR_DS_NO_BEHAVIOR_VERSION_IN_MIXEDDOMAIN · 0x80072179

What does this code mean?

Code 8569 · An issue reported by Windows Win32.

Official explanation · Original text

The forest functional level cannot be raised to the requested value since one or more domains are still in mixed domain mode. All domains in the forest must be in native mode, for you to raise the forest functional level.

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