This was a strange problem.
Google, Gmail, Youtube were all working fine, but after signing out – the next time Firefox was not allowing me to complete the login.
“Firefox has detected that the server is redirecting the request for this address in a way that will never complete.”
Simple, quick fix :
CLEAR THE COOKIES.
Clear your cookies and cache and then try signing in again.
- History (or Top-right > History) > Clear Recent History
Or : “Clear the Cache”:
- Tools (or > Options > Advanced > Network > Cached Web Content: “Clear Now”
“Remove Cookies” from sites causing problems:
- Tools (or > Options > Privacy > “Use custom settings for history” > Cookies: “Show Cookies”