Some Users lost the connection with the domain controller.

Gambler · Guest

Some Users lost the connection with the domain controller, can not enter any
of the mapped folders or printers from the controller. but after re-login
everything become working again.
I check the logs and notice some errors. Here they are

Event ID: 11197
The system failed to update and remove host (A) resource records (RRs) for
network adapter
with settings:

Adapter Name : {CAC3572C-E236-458F-A83A-FD08EB144674}
Host Name : <computer name>
Primary Domain Suffix : <domain name>
DNS server list :
<ip address>
Sent update to server : <ip address>
IP Address(es) :
<ip address>

Event ID: 40961

The Security System could not establish a secured connection with the server
<server name>. No authentication protocol was available.

Event ID: 40960

The Security System detected an attempted downgrade attack for server
<server name>. The failure code from authentication protocol Kerberos was
"<error message> (<hex error code>)".

Before the errors start to appear, I notice that some duplicate DNS records
exists in my server. I start to delete duplicates. And maybe after that
those errors start to appear. But i check all of those records and the host
names one the workstations are the same. So i can not understand there is the
problem.