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How to run Firefox after installing Windows 10 creators update

I updated my Windows machine to use creator update and among other surprises, Firefox suddenly stopped to run. It was shown in the Task Manager, but I didn't see anything in Taskbar and the browser wouldn't open.

Finally, I found the fix from the below link. This easy solution helped me to get the Firefox app running back again in no time.

[Fix] How to run Firefox after installing Windows 10 creators update

Here is the summary of needed steps -

1. On the Windows Explorer, go to address bar and type:

%appdata%\Mozilla

and press enter key.

This will take you to the Mozilla folder in AppData folder where additional data and information regarding user program settings and preferences are stored.

2. Once you are inside the Mozilla folder, head to the address bar again and click the “Roaming” word. Doing this will take you the the upper level directory which contains the Mozilla folder.

3. Once in the Roaming folder, go and delete the Mozilla folder.

Deleting the Mozilla folder with delete all your preferences for Mozilla Firefox. This includes all add-ons and any tweaks done for the browser. Therefore, after you deleted the Mozilla folder and ran Firefox, it will start as if your browser is freshly installed.

After you have done the steps above, you can go and start Firefox.

Thanks to the original blogger for posting this fix!

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