Error Code Portal
MicrosoftWindows Win32Error code

8564

ERROR_DS_DOMAIN_VERSION_TOO_HIGH

Alternative forms: 0x00002174 · 0x2174 · ERROR_DS_DOMAIN_VERSION_TOO_HIGH · 0x80072174

Code 8564 · An issue reported by Windows Win32.

The version of the operating system installed is incompatible with the current domain functional level. You must upgrade to a new version of the operating system before this server can become a domain controller in this domain.

Troubleshooting and diagnostic links

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