I am having the same problem, same VPN.
Hi. The Adobe LR tech was very helpful. You can see his suggestions I've
copied for you below. This worked for me. However, he sent me another
message a few days ago to say that the issue has been resolved in the
latest update of LR CC. If you haven't done the updates yet give it a try
first. If that doesn't work, then follow his advice below. Good luck!
"It turns out that this is not a bug in Lightroom CC. The issue is actually
with how IPVanish handles local IPv6 network traffic. That’s a mouthful, I
know. ☺ In my testing, I found that IPVanish actually broke a number of
apps I use daily as a software developer. The good news is that I have a
fix for you.
In the IPVanish settings, go to the “Connection” tab and disable the option
“Enable IPv6 Leak Protection”. Running with this option disabled will allow
Lightroom CC to work as expected. If you do this, please keep in mind your
VPN will no longer block any network traffic that is using IPv6. Please see
the following IPVanish guide for more info:
https://support.ipvanish.com/hc/en-us/articles/115002074754-IPv6
The fact that IPVanish is blocking local IPv6 network traffic is clearly
a design flaw in their software. Even with IPv6 leak protection enabled,
local traffic should still be allowed; I’ve reached out to the IPVanish
folks in hopes that they’ll fix this bug on their end.
If I had to make a recommendation as a fellow Lightroom CC user and VPN
user, it would be to switch to a VPN that does not block local IPv6 network
traffic such as NordVPN. Just to be clear, that’s my recommendation as a
software user and not as an Adobe employee.
I hope this is enough info to put this issue to rest. Thanks again for
helping track this down,
- Jeff"