Ive identified 2 of 3 versions of Firefox on my notebook in , 141.0.3, 140.0, ? I have found 10+ instances of Firefox running in task manager. 2 versions in uninstall software. A clean uninstall w/ massive numbers of files leftover in the registry unrelated to the process. Uninstall was canceled. Help is needed.

How do I get rid of Old versions of firefox? I'm not a whizkid so something straightforward please

Hi, could you describe the situation in more detail?

Sometimes you'll find more than one Firefox installation folder. For example, one each at the following locations:

• C:\Program Files\Mozilla Firefox
• C:\Program Files (x86)\Mozilla Firefox

Other times, the Windows Add/Remove Programs list refers to two different installations of Firefox, but this is due to an error by the updater in failing to remove the old information and there's really no old version to uninstall. If you uninstall and it accidentally removes the only version, as long as you do not remove your data, it's easy to recover by re-running the Firefox installer. You can download a full installer for 64-bit Windows from this page:

https://www.mozilla.org/firefox/all/desktop-release/win64/

Ive identified 2 of 3 versions of Firefox on my notebook in , 141.0.3, 140.0, ? I have found 10+ instances of Firefox running in task manager. 2 versions in uninstall software. A clean uninstall w/ massive numbers of files leftover in the registry unrelated to the process. Uninstall was canceled. Help is needed.

You raised an additional issue - processes. Firefox is a multi-process application, so the number of processes is based on the number of different sites Firefox loads content from. You can compare the Windows Task Manager to Firefox's built-in Task Manager (Shift+Esc, or about:processes) to see whether they are all accounted for. If you see processes in Windows Task Manager that you do not see in Firefox's Task Manager, then I can suggest additional steps to investigate.

Hello jscher2000- Using Revo uninstaller for version 140.0 of Firefox, the software scans for leftover data in the registry. There are a massive number of files designated for deletion. These files are local, attached to various software applications and are not from internet sites that I can tell. I heard you when you said Firefox is a multi-process application. But why would these registry items be linked to Firefox when no internet has been accessed. Can you tell me if these files are specifically from 140.0 or are they shared with the version I'm currently using.

Hello jscher2000- Using Revo uninstaller for version 140.0 of Firefox, the software scans for leftover data in the registry. There are a massive number of files designated for deletion. These files are local, attached to various software applications and are not from internet sites that I can tell. I heard you when you said Firefox is a multi-process application. But why would these registry items be linked to Firefox when no internet has been accessed. Can you tell me if these files are specifically from 140.0 or are they shared with the version I'm currently using.

I've never used Revo uninstaller.

With respect to Registry entries, there could be values/keys specifically under Mozilla, related to installer/uninstaller details, and under MIME types (for example, commands for how to open .html files, URLs, etc.). But I don't know whether the list you're seeing might be overinclusive. I suspect that for the most part, these keys are the same from version to version and are not per-version duplicates.

You mentioned files, which I would interpret as being outside the Windows registry. Aside from a second set of program folders, it would be hard to believe that Revo has limited itself to files belonging only to an old version of Firefox. It could be planning to permanently erase all your current Firefox data.