Verify that the vCenter Server IP address is reachable from the vRealize Network Insight Proxy VM. Log in to vRealize Network Insight Proxy CLI and use the ping to ensure that IP is reachable and telnet to ensure that the vCenter Server is reachable on port 443. If vCenter Server is reachable, then retry adding.
I love this stuff. It's a very light yet dependable cleaner. I recently stopped using bleach to clean with and fabuloso in the bowl once a week has kept my toilet sparkling clean without bleach!!!!!! 1  People & Blogs. 2  Standard YouTube License.
Try Snobol. It is a toilet bowl cleaner. It will get rid of all of the build up. As far as a drop in, I use Bowl Fresh. It is the ONLY drop in I have found to combat hard water stains. I use the Snobol every time I clean the toilet. If the stains don't disappear right away, they will after a couple cleanings.