FSSO - Create a new 'string value' registry entry, is reboot needed?

Hi Team,

I am currently working on this KB:

FSSO breaks after installing Microsoft KB... - Fortinet Community

Do I need to reboot the server or will the permanent solution work without a reboot? I just need to double check on this one.

Permanent Solution:

Create a new 'string value' registry entry under the following path.

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa\Kerberos\

Entry name: Auth4
Entry type: REG_SZ
Entry value: dcagent

This key must be added to the target server under Show Monitored DCs -> Select DC to monitor -> Select Domain Controllers for Monitoring User Logon Event -> DC Agent or Pooling mode. 

Thank you!