I've installed MSMS and it's working just fine. I installed it using our 'farm' account.
I'd like to access the MSMS web site using other accounts. When I go to the url (from my local workstation), I get 'Either the McAfee PortalShield service is currently not running or you do not have sufficient permissions.' Well, it is running, but I don't have sufficient permission.
I found this post b/c I also had this issue. Since I got this issue resolved, figured I'd share the fix.
Launch the browser with Run As Administrator, then paste the link from the URL into the admin browser in order to get passed the permissions error (even though you're logged in with a local admin account).