I have 5 virtual servers. RDP sensors on 3 servers give "Connection timed out Socket Error #10060." The DC's DNS sensor gives "Connection reset by peer Socket Error #10054." Other sensors (disk space, memory, CPU, services) work fine. How can I fix these errors? 


This seems to be a firewall or something similar blocking the connections. As the error #10060 means that the target did not even respond to the connection attempt, and on #10054 the connection was deliberately dropped by the target.



Disclaimer:
The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.