SQL clients can't connect after virtualization of a Server.
After Visualizing a 2012 R2 server the MSSQL 2008 could not be connected to. The program is called Office Mate. Their tech support logged in and found if I turn the firewall off it worked fine. I haden't made any changes to the system before it failed, and the old system had the firewall on.
Question, has anyone heard of firewall rules changing after virtualization? Thanks a ton.
Worth checking the firewall logs to confirm what is being dropped. Alternatively, you may have a firewall rule tied to a specific NIC or MAC address, which would have been replaced by a virtual NIC and potentially a new MAC address.