Active Directory: Update Group Membership without rebooting – Purge Kerberos Tickets

Download PsExec

https://download.sysinternals.com/files/PSTools.zip

Unzip PSTools.zip
Run cmd.exe as Administrator
psexec -s -i -d cmd.exe
C:\Windows\system32>  klist tgt
C:\Windows\system32>  klist purge
C:\Windows\system32>  klist tgt
C:\Windows\system32>  gpupdate /force

If you want to check the current user run “whoami”