I have been having the exact same issue with Canvas, the LMS that I teach on. It's been extremely frustrating because I cannot do my job without having access to this website and it's the only one that doesn't work. I have found a workaround that works 99% of the time but it's not working today. In the command prompt type: ipconfig /flushdns ipconfig /release ipconfig /renew Not sure if this'll help you today since it's not helping me anymore but it's worth a try.
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