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Home » Microsoft » Windows Server » Active Directory » Re: 40960, 40961 System Event errors:
Re: 40960, 40961 System Event errors: [message #345799] Wed, 16 December 2009 11:02 Go to next message
iskundar  is currently offline iskundar  United States
Messages: 1
Registered: December 2009
Junior Member
I want to make a new contribution to this post with a new cause for
40961 System Event errors.
I followed one by one each of the possible causes mentioned in this
article with no luck.
After 3 months triying diferent solutions I found following article.

http://support.microsoft.com/?scid=kb%3Ben-us%3B323931&x =21&y=13

In our installation we logon using smartcard and sometimes our users
stay working more than 10 hours.

Microsoft article must be modified mentioning that TGT expiration also
causes 40961 errors.

Solution. Edit Domain Default Group policy and change 2 options on
Kerberos policies:
Maximum Service Ticket Lifetime from 10 to 20
Maximum User Ticket Lifetime from 10 to 20
and problem solved.


--
iskundar
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Re: 40960, 40961 System Event errors: [message #345813 is a reply to message #345799] Wed, 16 December 2009 11:45 Go to previous message
aceman  is currently offline aceman  United States
Messages: 5816
Registered: July 2009
Senior Member
"iskundar" <iskundar.43aunb@DoNotSpam.com> wrote in message
news:iskundar.43aunb@DoNotSpam.com...
>
> I want to make a new contribution to this post with a new cause for
> 40961 System Event errors.
> I followed one by one each of the possible causes mentioned in this
> article with no luck.
> After 3 months triying diferent solutions I found following article.
>
> http://support.microsoft.com/?scid=kb%3Ben-us%3B323931&x =21&y=13
>
> In our installation we logon using smartcard and sometimes our users
> stay working more than 10 hours.
>
> Microsoft article must be modified mentioning that TGT expiration also
> causes 40961 errors.
>
> Solution. Edit Domain Default Group policy and change 2 options on
> Kerberos policies:
> Maximum Service Ticket Lifetime from 10 to 20
> Maximum User Ticket Lifetime from 10 to 20
> and problem solved.
>
>


You replied to an old post.

Nonetheless, to get rid of 40961 errors, in *most* cases simply having a PTR
zone will take care of it. I do not believe changing TGT settings will take
care of the root causes of this error. More info in the following link on
40960 & 40961 errors:

http://eventid.net/display.asp?eventid=40960&eventno=787 &source=LsaSrv&phase=1
http://eventid.net/display.asp?eventid=40961&eventno=139 8&source=LsaSrv&phase=1

--
Ace

This posting is provided "AS-IS" with no warranties or guarantees and
confers no rights.

Please reply back to the newsgroup or forum for collaboration benefit among
responding engineers, and to help others benefit from your resolution.

Ace Fekay, MCT, MCITP EA, MCTS Windows 2008 & Exchange 2007, MCSE & MCSA
2003/2000, MCSA Messaging 2003
Microsoft Certified Trainer

For urgent issues, please contact Microsoft PSS directly. Please check
http://support.microsoft.com for regional support phone numbers.
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