Mozilla VPN is currently experiencing an outage. Our team is actively working to resolve the issue. Please check the status page for real-time updates. Thank you for your patience.

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Le thread ibilondoloziwe. Nceda ubuze umbuzo omtsha ukuba ufuna uncedo.

Why does Windows shows multiple versions of Firefox installed?

user193283007818866074671407318472248021437
user193283007818866074671407318472248021437
more options

I am running Firefox 11.0 on Windows 7 home premium 64 bit OS. Firefox seems to be working fine.

When I check the list of installed programs in the Windows control panel I see two versions of Firefox listed (11.0 and 10.0.2). Is this normal? Does the installer not remove older versions when it does an update? Is is safe for me to uninstall the older version?

By the way, same situation for Thunderbird. It shows both 10.0.2 and 9.0.1!

I am running Firefox 11.0 on Windows 7 home premium 64 bit OS. Firefox seems to be working fine. When I check the list of installed programs in the Windows control panel I see two versions of Firefox listed (11.0 and 10.0.2). Is this normal? Does the installer not remove older versions when it does an update? Is is safe for me to uninstall the older version? By the way, same situation for Thunderbird. It shows both 10.0.2 and 9.0.1!

Isisombulu esikhethiweyo

Hi cor-el. Thanks for the response.

I could not find the registry key you referenced in your reply but I did a search and found the entry here:

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 10.0.2

After removing this registry entry, version 10.0.2 no longer appears in the installed program list, and this worked for Thunderbird 9.0.1 as well.

Thanks again.

Funda le mpendulo kwimeko leyo 👍 0

All Replies (2)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

It sometimes happens that the updater doesn't remove the old entry in the installed programs section and thus shows multiple versions as installed. You usually only have the most recent version installed and will remove that version if you try to uninstall the older version because both point to the same installation folder. You can either remove that registry key yourself or use a registry cleaner. 

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox (????)
user193283007818866074671407318472248021437
user193283007818866074671407318472248021437 Umnini wombuzo
more options

Isisombululo esiKhethiweyo

Hi cor-el. Thanks for the response.

I could not find the registry key you referenced in your reply but I did a search and found the entry here:

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 10.0.2

After removing this registry entry, version 10.0.2 no longer appears in the installed program list, and this worked for Thunderbird 9.0.1 as well.

Thanks again.