i have a slingbox 500 and recently when i try to access it from overseas, i am constantly asked to reload the "SlingplayerForWebInstaller". i do and it constantly asks me to reinstall it, but i never proceed beyond this. i have no slingbox plugins nor extensions. i have windows 10 on a Dell laptop and several mini PCs. i've used microsoft edge, chrome, and firefox with the same results.
slingbox does connect on my apple and my android phone however.