Is this happening after you input your credentials? Try to SSH into the iDRAC. If you are able to SSH in then run>racadm racreset
That will restart the DRAC. If you are able to connect after a restart then make sure your DRAC is at the latest firmware. The latest firmware resolves a lot of issues. One of them is releasing sessions. Old DRAC firmware has an issue where it will not release a session. It will give a a session error or sometimes just a spinning wheel like you are experiencing.
Dell EMC, Enterprise Engineer
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Thank you for your reply
It happens after I input credentials...
I log in through ssh and run racadm racreset. iDrac restarts but after that situation is the same. Can not log in...
I search on the Internet but cannot find - is there a way to upgrade firmware through ssh?
Ok. It was my mistake. I try to log in from my laptop, which is not in domain, and it works. It looks like problem was domain security configurations for IE.