Can't connect to new Orbi at 192.168.1.1 on my PC

SOLUTION FOUND: I have Kaspersky Anti-Virus 2017 installed. This was the root of the problem.

I had previously tried disabling KAV2017 and exiting KAV2017 as part of my debugging effort. However, access to 192.168.1.1 was still blocked even when I had terminated KAV2017. So for a while, I thought KAV wasn't the problem. The clue I found just a few minutes ago was that I noticed that the "Can't access this page" browser error message changed slightly depending on whether KAV2017 was disabled (paused) or whether it was terminated. When KAV2017 was terminated, there was additional information available in the browser error message that pointed to KAV as the culprit.

When I temporarily uninstalled KAV2017, I was able to get to 192.168.1.1 again. Whew!

I find it interesting that KAV2017's "protection" (if you want to call it that) was so thorough and at such a low level, that it prevented access to 192.168.1.1 even inside Virtual Machines that didn't have any Anti-Virus software installed at all. It's actually pretty impressive how comprehensive Kaspersky's protection is, except that it was undesired operation for me (and probably a lot of other folks).

When I added http://192.168.1.1 and https://192.168.1.1 to the KAV2017 Web Anti-Virus URL Advisor Exclusion List, I can get to 192.168.1.1 fine now on my main PC.

Cheers!

AzJazz