This to bypass the rules that are in place. Students connecting school devices to their cell phone hot spots, and using

Over the past month, we have started to have trouble with

Bypassing School Wi-Fi and Using Cell Phone Hot Spot Industry-Specific IT.

We did try changing the DNS server on the server to point to an external one (google), rather than local host, but no luck. I think this is a DNS issue, but not too sure. One of the times the problem occurred, we opened the DNS management console on the server and it could not load the zone (until after we restarted the server and resolved the issue). This has been removed, but the issue keeps coming back. The only thing we recently changed was we accidentally deployed a software based proxy web filter solution to the device from Solarwinds RMM. Can't see anything obvious in the event log. Restarting the server resolves the issue (for a few days). The server can't access websites using a browser and can't be accessed remotely via TeamViewer. The server can ping the router and resolve addresses like. We go on-site, the server is up and running, connected to the network and can be pinged by devices on the network. The server keeps going 'offline' and we can't access it via TeamViewer. We monitor a Windows Serve 2016 essentials physical server for one of our clients using Solarwinds RMM.

Windows server 2016 essentials