The kerberos client received a KRB_AP_ERR_MODIFIED

Posted on 2008-06-19
Last Modified: 2010-08-05

One of our W2K3 server has been disconnected from the network for a while and we are now gettings the following error in the Event log  :
The kerberos client received a KRB_AP_ERR_MODIFIED error from the server host/  The target name used was ldap/ This indicates that the password used to encrypt the kerberos service ticket is different than that on the target server. Commonly, this is due to identically named  machine accounts in the target realm (ATLANRS.COM), and the client realm.   Please contact your system administrator.

could you direct me in the right direction ?

Question by:quadrateksupport
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Expert Comment

ID: 21821131

Author Comment

ID: 21821204
I tried to use the ldifde command. I ran it on the PDC emulator and on the DC  have problem with. I get the same result. It makes me think it is DNS related,

I set the default DC to use the PDC emulator for DNS. and I still get the same problem.

are you able to help ?

Expert Comment

ID: 21821218
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Assisted Solution

sirbob2000 earned 250 total points
ID: 21821235
There are also a fair few things to try from the chaps at;


Author Comment

ID: 21821483
I checked it, there is no duplicate

Accepted Solution

quadrateksupport earned 0 total points
ID: 21822142
I have depromot the DC and will promot it again .

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