ramon82
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Posts posted by ramon82
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Windows Server 2016 - DNS/AD problem
Hi all - at one point our DC froze and we had to do a restart. It installed a lot of updates and then once it got up and running again we started experiencing problems with DNS, passwords, mapped drives etc - please refer to screenshots. Its as if the communication between the desktops and the server got out of sync somehow.
Any idea what we can do please?
Thank you
Windows Server 2016 - DNS/AD problem
in Microsoft Windows Server Family
Posted
Hi again i discovered that this seems to be an AD issue through event viewer:
The Security System has detected a downgrade attempt when contacting the 3-part SPN
ldap/JUPITERDC01.jupiter.local/jupiter.local@JUPITER.LOCAL
with error code "The attempted logon is invalid. This is either due to a bad username or authentication information.
(0xc000006d)". Authentication was denied.
Any ideas??