In this post, you’ll learn about the Windows System Error ERROR_DS_NO_BEHAVIOR_VERSION_IN_MIXEDDOMAIN (0x2179)] and the reason why you are receiving the error message
How does this Error in Windows Look like?
Error Code 8569 ERROR_DS_NO_BEHAVIOR_VERSION_IN_MIXEDDOMAIN (0x2179)]
Why do you receive the System Error Error Code 8569 ERROR_DS_NO_BEHAVIOR_VERSION_IN_MIXEDDOMAIN (0x2179)] in Windows?
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.