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Won't update, says prev version needs to update and to restart. This doesn't work, get same error

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  • Paskiausią atsakymą parašė cor-el

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Running old version of Firefox. Tried to update and get message that a previous version hasn't finished installing and computer needs to reboot to finish. I reboot, then try to install new version, but just get the same error. I also tried to uninstall and start over, but got the exact same message that it needed to finish updating before it could be installed. Suggestions? Thanks!

Running old version of Firefox. Tried to update and get message that a previous version hasn't finished installing and computer needs to reboot to finish. I reboot, then try to install new version, but just get the same error. I also tried to uninstall and start over, but got the exact same message that it needed to finish updating before it could be installed. Suggestions? Thanks!

Chosen solution

Do a clean (re)install and delete the Firefox program folder (C:\Program Files\Mozilla Firefox\).

Download a fresh Firefox copy and save the file to the desktop.

Uninstall your current Firefox version if possible.

  • Do NOT remove personal data when you uninstall the current version or you lose your bookmarks and other data in the profile folder.

Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.

  • It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.

Your bookmarks and other profile data are stored elsewhere in the Firefox Profile Folder and won't be affected by a reinstall, but make sure that you do not select to remove personal data if you uninstall Firefox.


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Chosen Solution

Do a clean (re)install and delete the Firefox program folder (C:\Program Files\Mozilla Firefox\).

Download a fresh Firefox copy and save the file to the desktop.

Uninstall your current Firefox version if possible.

  • Do NOT remove personal data when you uninstall the current version or you lose your bookmarks and other data in the profile folder.

Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.

  • It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.

Your bookmarks and other profile data are stored elsewhere in the Firefox Profile Folder and won't be affected by a reinstall, but make sure that you do not select to remove personal data if you uninstall Firefox.


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Thank you! I had to just delete the folder, then the new version installed. it also kept my bookmarks!!!! I couldn't just uninstall for some reason, but deleting worked. Thank you VERY much!! Cindy

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You're welcome