Check DFSR Using

dfsrmig /getglobalstate

Change FSR to DFSR

dfsrmig /setglobalstate 1
dfsrmig /getmigrationstate
dfsrmig /setglobalstate 2
dfsrmig /getmigrationstate
dfsrmig /setglobalstate 3
dfsrmig /getmigrationstate

Stop and Disable File Replication Service