1) Does it show any error message while performing End Task Through Task Manager? I suggest you to perform Safe Mode with Networking and then try to end the task and check if you're able to Safe mode: Please follow below steps: Click on power button at left bottom corner, press and hold Shift key and click on Restart. Click on Troubleshoot.
Here is how to use the Windows Task Manager to end a program that won't close: 1. Press the Ctrl + Alt + Delete keys on your keyboard. This will open the Windows Task Manager. 2. In the Windows Task Manager, click on the Processes tab. 3. Find the program that you want to end in the list of processes.If you are not able to kill the task using task manager I suggest you to try to kil the task using command prompt. a. Press Windows key + X. b. Select Command Prompt (Admin). c. run the tasklist command, it will show you a list of all the running processes. d. Now you can kill any particular process by running the Taskkill command .
In task manager when Edge is running, there is just one line saying Edge at the top in apps. When Edge is closed, there are multiple lines stating edge in background processes, one running at "Very high", this is the one I end to close them all. After the instructions, edge had all changed when started again.
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