Looks like a firewall problem.
Something is blocking port 53 for Launcher.exe or matrix.exe (DNS works on port 53)
The error means that launcher.exe can't turn something like authserv.thematrixonline.com into and IP address like 123.45.67.89
however given that you can use your web browser the port is not blocked completely.
Where abouts do you get this error message? Can you post the results of the network information in the thread at the top of the forum called "Please Read before Posting". Jeffers