Поиск в Поддержке

Избегайте мошенников, выдающих себя за службу поддержки. Мы никогда не попросим вас позвонить, отправить текстовое сообщение или поделиться личной информацией. Сообщайте о подозрительной активности, используя функцию «Пожаловаться».

Learn More

Two versions of firefox on computer - How do I get rid of one?

  • 26 ответов
  • 2 имеют эту проблему
  • 1146 просмотров
  • Последний ответ от ezwrite

more options

I just noticed that I have an old (63.0.3) and a new (66.0.3) version of Firefox on my computer. I have no idea when or how this happened. Seems to work fine at the moment.

One is Mozilla Firefox 63.0.3 (x64 en-US) (170 MB). One is Mozilla Firefox 66.0.3 (x64 en-US) (175 MB). So my guess is this happened a while ago.

Both show up when I look at Apps & Features. Both are listed in Revo uninstaller.

There are two identical Firefox icons.

If I open one and check the version number in the program, it does show a different number depending on which icon I clicked to open the program. So there are definitely two versions.

They are sharing information. They open the same pages in several tabs that I had open when I closed the the program the last time.

I want to get rid of one but don't want to lose my many settings, bookmarks, etc. I don't want to risk everything by just Uninstalling the old version, unless I can be sure that it is safe.

Everything on my HP-PC is up to date.

Any ideas? Thanks!

Выбранное решение


It was super simple but I'm glad I took all precautions. I copied the profile to a flash drive and then uninstalled FF 63.

FF 66 was still fully 100% intact, as you predicted.

I wouldn't have dared attempt this without guidance. It took hours to research this and less than a minute to do it.

THANK YOU again.


Прочитайте этот ответ в контексте 👍 0

Все ответы (20)

more options

If I open 66 first, it opens all the tabs from the last time I closed it. If I then open 63, it only opens one tab. So maybe I should open 66, then uninstall 63?

more options

Firefox comes in three or more folders on all computers. They are;

Maintenance: (Programs Folder) <Windows Only> Firefox itself: (Programs Folder) And two folders in the profile of each user on the computer for each Firefox profile for that user.

If you remove the Firefox folder, the user profiles would not be affected.

It looks like both programs are accessing the same profile.

This is what you can do. Open the file explorer on your computer. Make your way to the OLD unwanted programs folder and remove it.

After rebooting the computer, run a registry scanner if you have one.

more options

I have had this same issue before, the way I use to solve this type of problems is using windows control panel then look for uninstall programs and uninstall the version you do not use. Caution: before doing this make sure you have a backup of your profile, then restart the computer. Reinstall the desired version of FF from mozilla.org and import your bookmarks and profile or sign in to synchronise to the mozilla foundation sync service.

If the problem persists, what you might need is to uninstall again and delete all FF ledges that exist under windows program files directory. Then repeat the afore mentioned procedure.

Изменено Frys

more options

You should always confirm in such cases that the two versions are actually installed and that this is not about a leftover key in the Windows Registry that wasn't removed by the updater. In that case only one Firefox version is installed and removing the older version will remove the current release as well.

more options

How do I check that? Can you give me step-by-step directions or tell me where to find them? Thanks.

more options

In Control Panel>Programs and Features>Uninstall, it shows

Mozilla Firefox 63.0.3 ((x64 en-US)...Mozilla...3/0/19...169 MB...63.0.3

Mozilla Firefox 63.0.3 ((x64 en-US)...Mozilla...4/11/19..175 MB...66.0.3

more options

That would be inspecting this key in the Windows Registry with the registry editor and check Mozilla Firefox keys.

  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\
more options

Using the registry editor, it shows:


Mozilla Firefox 
  -66.0.3 (x64 en-US) 
  -- Main
  -- Uninstall 


  (name)                (type)               (Data)
 (Default)              REG_SZ                  (value not set)
 CurrentVersion   REG_SZ                   66.0.3

So I see no entry for 63.0.3.

Изменено ezwrite

more options

There's also this:

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 66.0.3 (x64 en-US)

more options

There should be a key present that shows the installation path of each item. If the installation path is the same directory for both Firefox versions then it is likely a leftover key and you can remove this uninstall key.

more options

I don't see 63.0.3 anywhere. Where should I look?

more options

If there is no key for Firefox 63.0.3 then you can ignore it. You can check if there is a similar key in HKEY_CURRENT_USER.

  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox
more options

Yes, it's here!

Computer\HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 63.0.3 (x64 en-US)

Now what?

more options

If there is a path key present then you can check its value, otherwise you can probably just remove this key because this Firefox version got installed as a user and the updater may only be checking the keys in HKEY_LOCAL_MACHINE and not in HKEY_CURRENT_USER.

more options

How do I check its value? Like I said, not an expert!

more options

Does that explain the two icons and the two entries to uninstall the program?

more options

Yes, that is the most likely explanation for seeing two Firefox entries in the Windows Control Panel. We regularly see questions about seeing multiple Firefox version showing in the Windows Control Panel Programs section and this is always caused by the updater not having removed the entry for the previous version unless there is a 32-bit and 64-bit version installed in different folders.

more options

So to be triple sure I'm doing the right thing, just delete:

Computer\HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 63.0.3 (x64 en-US)

(I get nervous when I do something in the registry!)

That should do it?

more options

Did you check that this version points to the same installation folder as the other version?

You can export this key just to be sure before removing it.

more options


For 63:

C:\Users|Frank|AppData\Local\Mozilla Firefox|firefox.exe.o

For 66:

C:\Users|Frank|AppData\Mozilla Firefox|firefox.exe.


For InstallLocation

For 63: C:\Users\Frank\AppData\Local\Mozilla Firefox

For 66: c:\Program Files (x86)\Mozilla Firefox

  1. 1
  2. 2