AD timeout token

I am running windows server 2012 R2 as my domain controller, actually 3 of them, with DNS and DHCP.

I'm having mac clients having problems with permissions, so we're thinking the problem is with the AD timeout token, that after a few hours of the user stays logged in, the Macs are not automatically renewing the token.

Can someone tell me where would I find that configuration so I can change it to like 4 or 5 days?

DanNetwork EngineerAsked:
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Cliff GaliherCommented:
Active Directory uses Kerberos (an open standard) by default, and yes, Mac *still* doesn't really to long sessions in Kerberos properly.

With that said, extending the ticket time is a *TERRIBLE* fix (not criticizing, just informing.) It opens a pretty significant security hole to the point where the trade-off is rarely worth it.  Instead, you should make a minor change to the Mac OS to request ticket renewals more often.  In Mountain Lion and newer, it is relatively easy.

One change, one time per machine, and you should see your problems dissipate.

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DanNetwork EngineerAuthor Commented:
will this work in Yosemite, as most of the client are on Yosemite.  I will give it a try
Cliff GaliherCommented:
The last OS I've tested it with was Mavericks. But it should work.
DanNetwork EngineerAuthor Commented:
thanks, I haven't tried it yet, but will do so next week.
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