Hi, I just started working and the internet connection in the building is a wireless unsecured public connection. For the first week, I connected fine and it worked great. All of sudden the connection doesn't work. The laptop connects, but it says "No Internet Access" and the problem says that the DNS server is not responding. It's strange because my laptop connects to all other wireless connections, including an unsecure one it found nearby as well as my connection at home. It only has problems with this connection, and it's only my laptop as many others are connecting to this work connection with no problems. I've tried everything, including all the cmd prompts and the likes. Nothing has worked. It is incredibly frustrating and I don't know how to solve it. Thanks for any help.

There can be several possible causes. I can be assure that there are no issues in your system because it works well with other networks. I suggest you temporary disable antivirus. If it does not work, contact the administrator of the network for more assistances. Especially check: 1. IP conflicts. 2. ARP malware.