In the Run Window type the following command line: Press the Windows key on the keyboard and the letter R to open the Run Window.
To check the permission status, follow these steps: Sometimes due to a system file error or read/write error, Firefox is not able to create any file as it loses the required permissions. In order to operate seamlessly, Mozilla Firefox creates system files in a profile folder created in the Firefox folder in the Program Files directory on your C drive. Look for any additional Firefox processes running and close them too.Ĭlose the Task Manager and restart Firefox. Locate Firefox or press the letter F to pinpoint the Firefox process. In the Task Manager window, select the Processes tab. Open Task Manager by either a right-click on the taskbar and select Task Manager from the list of the options or just press the Windows key and type Task Manager. Most of the unknown and unexpected issues get resolved with a restart the same as we feel refreshed after a good night’s sleep.Īlso Read: Useful Firefox Settings to Make Yourself A Pro Method 2: End the process through the Task Manager. Or, Close the Firefox and restart your computer.