No need to reboot a system just to apply new permission settings. Instead, purge your Kerberos tickets so that you will get a new ticket based on the current permissions.

In PowerShell, use this command to purge all cached Kerberos tickets:

PS> klist purge

Current LogonId is 0:0x2af9a
	Deleting all tickets:
	Ticket(s) purged!


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