When installing web editor plugin getting error systray386.dll is in use when generating certificates. Then i have tried to drop to command line and run the Arduino_Create_Bridge_cli.exe -generatecert=true it completes successfully. But still keep getting the No Plugin Connection. Uploading is disabled until you reconnect. My machine is on a windows domain not sure if that matters.
It might matter.
Do you have the ability to "run as administrator" with full privileges ?
Also if you are on a domain you may need to clear the path through a firewall / router.