How to update computers group memberships without reboot

I have been running in to this command few times now so I thought I should blog this (it has been already blogged in various blogs but you never find them when you need them):

klist -li 0x3e7 purge

This allows administrators to flush the systems Kerberos TGT (as well as all other tickets).  The system process is always 0x3e7. You have to run this from an elevated command prompt otherwise it won't work.

This way you can get computers to refresh their group policies that are targeted by security groups without having to reboot those computers.