In this post, you’ll learn about the Windows System Error ERROR_DS_FOREST_VERSION_TOO_HIGH (0x2173)] and the reason why you are receiving the error message
How does this Error in Windows Look like?
Error Code 8563 ERROR_DS_FOREST_VERSION_TOO_HIGH (0x2173)]
Why do you receive the System Error Error Code 8563 ERROR_DS_FOREST_VERSION_TOO_HIGH (0x2173)] in Windows?
The version of the operating system installed is incompatible with the current forest functional level. You must upgrade to a new version of the operating system before this server can become a domain controller in this forest.