Verification of Replica Failed. The Specified Domain DomainName is still using the File Replication

Verification of replica failed. The specified domain {Domain-Name} is still using the File Replication Service (FRS) to replicate the SYSVOL share. FRS is depreciated. The server being promoted does not support FRS and cannot be promoted as a replica into the specified domain. You MUST migrate the specified domain to use DFS Replication using the DFSRMIG command before continuing. And Step by Step instruction for SYSVOL migration from FRS to DFSR #Server