Your can restart the FRS service to force FRS replication in an active directory
To restart the FRS service, launch services.msc from the Run option on the Start Menu
And restart the FRS service and you will get the Event ID 13516 on FRS event log this will ensure the FRS status is fine
How do I force Sysvol replication in an active directory
Forcing Sysvol replication through NTFRSUTL
If you want to force sysvol replication between two domain controllers in an active directory then use the below procedure
NTFRSUTL FORCEREPL Command-Line Option to Force Replication
You can use the new ntfrsutl forcerepl command to enforce replication regardless of the predefined replication schedule. This is only implemented for the domain controller Sysvol replica set.
ntfrsutl forcerepl [Computer] /r [SetName] /p [DnsName]
This command forces FRS to start a replication cycle. You must specify the Computer, SetName and DnsName.
Note In this command, the following placeholders are used:
[Computer] = Connect with the NtFrs service on this machine.
[SetName] = The name of the replica set.
[DnsName] = The DNS name of the inbound partner to force replication from.
ntfrsutl.exe forcerepl DestinationDC /r “Domain System Volume (SYSVOL share)” /p SourceDC.domain.com
The quotation marks in this example are required when you use the /r option. If the quotation marks are not present, the command will not work.