Misha Hanin  

Add Computer to Group – GPUpdate without Restart

Usually, when we add a computer to a security group, we need to restart in order for the computer to see that it is now a member of this group. To bypass this, we can delete the system’s Kerberos ticket and run GPUpdate.

To do this, we need to run the following from an elevated command prompt:

klist -li 0x3e7 purge