the IP address is he address of the device on the internet. It is allocated by your service provider when you access the internet. Your phone has one as does your desktop and any other device connected to the internet.

Based on what you have posted, it sounds like Comcast have blacklisted your computer for some reason. Perhaps ask them why. My guess is you started out using the VPN and comcast did not like that and blocked you and now you are blocked so nothing you do will fix it until the block times out, however long that is set to be (the use of the word temporarily indicates it will timeout some time.) or Comcast life the block. I would recommend the later as I am only guessing as to the cause. It might be you tried to log in three times with the wrong password and the password is saved on your system or it could by any of a million and one other reasons. Only Comcast knows at this point in time.

Thanks Matt for the reply. I thought about that option as well but I can log into my comcast email from a browser (directly on the xfinity site) even with the VPN running. I have a note out to Comcast support on this as well but I have low expectations of getting something other that a bot response. Is there something in Windows 11 that could be blocking it? Is there a way I can get more detail from the alert that may be able direct me to where the block is coming from?

Don't know if you've found a solution or not but I've got the same issue, which just started after three power loss shutdowns and restarts. I'm running TB on Ubuntu Linux, so Win 11 should have nothing to do with it, although it's happening on my Win 11 laptop as well. I also tried connecting from a different email client, which has same issue. But, as w/you, no problem logging in through Xfinity directly. So, it is probably something caused by them. I will try to go to Xfinity support, but, like you, have low expectations.