Certain Firefox problems can be solved by performing a Clean reinstall. This means you remove your Firefox program files and then reinstall Firefox. This process does not remove your Firefox profile data (such as bookmarks and passwords), since that information is stored in a different location.
To do a clean reinstall of Firefox, please follow these steps: Note: You might want to print these steps or view them in another browser.
Download the latest Desktop version of Firefox from mozilla.org (or choose the download for your operating system and language from this page) and save the setup file to your computer. After the download finishes, close all Firefox windows (or open the Firefox menu New Fx Menu and click the close button Close 29 ). Delete the Firefox installation folder, which is located in one of these locations, by default: C:\Program Files\Mozilla Firefox C:\Program Files (x86)\Mozilla Firefox Now, go ahead and reinstall Firefox: Double-click the downloaded installation file and go through the steps of the installation wizard. Once the wizard is finished, choose to directly open Firefox after clicking the Finish button.
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