Why Can’t I Access Any Resources on the Azure Portal?

Check Downdetector for the latest updates. You're not alone, a lot of folks are reporting this issue today.

Yep, it's down for everyone. Just hang tight; they should have it back up soon.

Yeah, it looks like there's an outage. A lot of people are having the same issue with Azure being down right now.

Seems like a widespread problem. Azure's services are having some hiccups this week, affecting many users across different services.