We have Chromecasts at school and today they aren't connecting to the internet. When plugged into the TV and the teacher tries to connect it comes up saying that "Unable to connect to the internet" it has been working fine for the last 6 months since we got them. We had a web filter change over the half term gone but that was over a week ago (3 total), they've been opterating without issue as if there was no chage which means the web filtering hasn't been an issue. The power light comes on when the device is plugged into both HDMI and the USB slot for power and turns white to indicate that it is on. When trying a different Chromecast which we got in within the last few days there is no difference from the one that has been used for months. which is the exact same as the one we got months ago.
The Chromecast itself suggests restarting the router that is nearby but that doesn't make a difference.
The model of the device is: NC2-6A5
Any ideas?
