The Security Account Manager failed a KDC request in an unexpected way

Thread starter #1

I started getting the following events on my Windows Server 2012R2 domain controller:

As a result no one can log on/access network resources.

There's no any resource depletion as in case when the binary data is C0000017 - this error may appear even on weekend when there are no users in the office. There are plenty of RAM and HDD free space available. No applications have been installed/upgraded. As far as I can see this error is NOT related to Windows Updates.

I have no thoughts about what could trigger such DC behaviour. DCDIAG and dnslint display no errors...

Any suggestions are greatly appreciated!

Thank you in advance,

Continue reading...