Suddenly I am having couples of troublesome with Firefox browser. Using Windows10,Firefox 77.0.1. Problems: 1. Google MAP is not responding.. no street view icon or other icon at the corner. 2. Google Image only shows 20 images, and It will not enlarge images when I click one. 3. No display of “I’m not a robot” dialogue. Cannot access the site that requires. I have uninstall and reinstall Firefox with deleting all the profile folder from AppData folder related to Firefox, but still the same problem. Using other web browser(Opra, chrome), there are no problems, everything works fine. Also using Firefox from another PC with same network, it works fine. So it is just with this main PC.. Than you in advanced, if any solutions.