Firefox won’t launch?
Firefox wont launch on my laptop after I did a “restore” to it (after it poped out saying my browser is slower than it should be and “restart”ing it will make it faster).
I tried: - reinstall it. - clean uninstall (as recommended by one of the articles on this website) But still not working.
What should I do? I dont want to lose my bookmarks.
Valgt løsning
Hi, hold down Shift (Option key on Mac) when you start Firefox to start in Safe Mode. More - Diagnose Firefox issues using Troubleshoot Mode. If it works in Safe Mode, disable any theme or add-ons you have - Add-ons Manager (Ctrl/Cmd+Shift+A) > Themes/Extensions, then if it's OK, re-enable them one by one until you find the culprit. You may need to restart Firefox after enabling some add-ons.
Try starting from the Start Menu > Mozilla Firefox. If it works; in Win10 you can drag from the Start Menu to your Desktop or right click and pin the icon in the Task Bar. (Win7 right click in the Start Menu > Send to Desktop).
When you did the clean reinstall, did you remove the installation folder as shown in step 3? Note that 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
and click the close button 
).
- Delete the Firefox installation folder, which is located in one of these locations, by default:
- Windows:
- C:\Program Files\Mozilla Firefox
- C:\Program Files (x86)\Mozilla Firefox
- Mac: Delete Firefox from the Applications folder.
- Linux: If you installed Firefox with the distro-based package manager, you should use the same way to uninstall it - see Install Firefox on Linux. If you downloaded and installed the binary package from the Firefox download page, simply remove the folder firefox in your home directory.
- Windows:
- 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.
More information about reinstalling Firefox can be found here.
WARNING: Do not use a third party uninstaller as part of this process. Doing so could permanently delete your Firefox profile data, including but not limited to, extensions, cache, cookies, bookmarks, personal settings and saved passwords. These cannot be easily recovered unless they have been backed up to an external device! See Back up and restore information in Firefox profiles.
Please report back to say if this helped you!
Thank you.
Læs dette svar i sammenhæng 👍 2Alle svar (2)
Valgt løsning
Hi, hold down Shift (Option key on Mac) when you start Firefox to start in Safe Mode. More - Diagnose Firefox issues using Troubleshoot Mode. If it works in Safe Mode, disable any theme or add-ons you have - Add-ons Manager (Ctrl/Cmd+Shift+A) > Themes/Extensions, then if it's OK, re-enable them one by one until you find the culprit. You may need to restart Firefox after enabling some add-ons.
Try starting from the Start Menu > Mozilla Firefox. If it works; in Win10 you can drag from the Start Menu to your Desktop or right click and pin the icon in the Task Bar. (Win7 right click in the Start Menu > Send to Desktop).
When you did the clean reinstall, did you remove the installation folder as shown in step 3? Note that 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 and click the close button ).
- Delete the Firefox installation folder, which is located in one of these locations, by default:
- Windows:
- C:\Program Files\Mozilla Firefox
- C:\Program Files (x86)\Mozilla Firefox
- Mac: Delete Firefox from the Applications folder.
- Linux: If you installed Firefox with the distro-based package manager, you should use the same way to uninstall it - see Install Firefox on Linux. If you downloaded and installed the binary package from the Firefox download page, simply remove the folder firefox in your home directory.
- Windows:
- 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.
More information about reinstalling Firefox can be found here.
WARNING: Do not use a third party uninstaller as part of this process. Doing so could permanently delete your Firefox profile data, including but not limited to, extensions, cache, cookies, bookmarks, personal settings and saved passwords. These cannot be easily recovered unless they have been backed up to an external device! See Back up and restore information in Firefox profiles.
Please report back to say if this helped you!
Thank you.
Ændret af Scribe den
Thank you very much
Just entering Safe Mode (without disabling anything) solved the problem.
Thanks for your help.