This is a new problem. Firefox is my default browser. Firefox has cookies enabled. Firefox cannot access Google sites, but is fine with all others. When I try to log into Gmail, Firefox allows me to log into all Google sites (with passwords etc) but then I get a Google error page that my Firefox cookies are NOT enabled and can go no further. Even though I see several Google cookies within Firefox using WinPatrol etc.

Have tried all Google & Firefox cookie-enabling/cache clearing instructions to no positive change. Thus I am forced to switch from Firefox to Chrome to access Google sitesnow. Thos never happened before.