Hi, today suddenly the authentication of UCS at AD-Domain is not working. Probably caused by the domain server windows update running this night.
Try to reconnect by reset the domain computer account fails with ERROR_DNS_UPDATE_FAILED.
root@mmnucs:~# kinit --no-addresses --password-file=/etc/machine.secret MMNUCS
kinit: krb5_get_init_creds: unable to reach any KDC in realm IBMMN.LOCAL
root@mmnucs:~# net ads join -U Admin machinepass=xxxxxxxxxxxxxxxx
Enter Admin’s password:
Using short domain name – IBMMN
Joined ‘MMNUCS’ to dns domain ‘IBMMN.local’
DNS Update for mmnucs.ibmmn.local failed: ERROR_DNS_UPDATE_FAILED
DNS update failed: NT_STATUS_UNSUCCESSFUL
I can login only as root - all domain accounts are not working.
How to go further to find a solution?
Thanks in advance