The network on the RDS host ceased to work

Good afternoon, there is a RDS farm, of 5 members. At some point, I lost contact with two of them, after rebooting, they found an error in the logs, LDAP ID 4343, a bit of a googling, many write that it's probably an antivirus, who had experience with such an error? OS Windows 2012 R2.
Ivan BogatovPUKAsked:
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nappy_dThere are a 1000 ways to skin the technology cat.Commented:
Can you provide more info in the error?

Screenshots?

What are you trying to do?
joinaunionCommented:
Do you use a switch? If so what is the make and model?
Ivan BogatovPUKAuthor Commented:
In the logs, there is an error 5719, an error occurred while processing Group Policy. The computer name could not be resolved. Possible reasons:
a) Error resolving names on the current domain controller.
b) Active Directory replication latency (the account created on another domain controller is not yet replicated to the current domain controller).

Server, this is a virtual machine Vmvare, Windows Server 2012 R2
joinaunionCommented:
compdigit44Commented:
Are the RDS servers physical or virtual? Any setting or environment changes recently? Another connectivity issues reported on your RDS servers?
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