[Web Plugin/Win10] hung on "Looking for Installed Plugin..."

Downloaded it twice now, and ran the check 3 times. Doesn't seem able to locate that I installed the web plugin, even though it appears in the taskbar and directs me to the website.

Is there a fix for this?

Do you have any active Firewall or Anti-virus? Have you accepted all the certificates?

Which browser ?
Have you tried to clear your browser cache ?