This note appears when Firefox is launched from a non administrator user. How do I get rid of it? "The update could not be installed. Please make sure there are no other copies of Firefox running on your computer, and then restart Firefox to try again."

This occurs upon initial boot up and no other users are on. No other firefox is running. The current version will then open without issue. Just want to warning removed

If there are problems with updating then best is to download the full version and uninstall the currently installed version.
Download a fresh Firefox copy and save the file to the desktop.
* Firefox 7.0.x: http://www.mozilla.com/en-US/firefox/all.html
* Uninstall your current Firefox version.
* 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.
* http://kb.mozillazine.org/Profile_folder_-_Firefox
* http://kb.mozillazine.org/Profile_backup
If files already have been downloaded then you may have to remove the files in the updates and updates\0 folder. 
You can delete active-update.xml and updates.xml as well if present.
C:\Documents and Settings\<user>\Local Settings\Application Data\Mozilla\Firefox\Mozilla Firefox\updates
(%USERPROFILE%\Local Settings\Application Data\Mozilla\Firefox\Mozilla Firefox)
The "Application Data" folder in XP/Win2K and the "AppData" folder in Vista/Windows 7 are hidden folders.
*http://kb.mozillazine.org/Show_hidden_files_and_folders

Similar Messages

ERROR MASSAGE- "The update could not be installed.Please make sure there are no other copies of Firefox running on your computer,and then restart Firefox to try again".

"The update could not be installed.Please make sure there are no other copies of Firefox running on your computer,and then restart Firefox to try again"this kind of error massage i found but there are no other copies of Firefox running on my computer.So please solve my prob.I can not uninstall this because i have saved important bookmark on my system.When i start my Firefox that time browser is opening few times later may be it's my internet slow connection but everyone has slow connection internet they are not having this prob then why should i have this prob.Why it is taking little bit time to open?after that update prob when i installed the update file.

Firefox [[Safe mode]] is a diagnostic mode that allows troubleshooting. 
You start the same version, only some features are disable like add-ons (Tools > Add-ons > Extensions).
See http://kb.mozillazine.org/Software_Update (Software Update not working properly)
Remove the files in the updates and updates\0 folder:
C:\Users\<user>\AppData\Local\Mozilla\Firefox\Mozilla Firefox\updates
(%LOCALAPPDATA%\Mozilla\Firefox\Mozilla Firefox\updates)
C:\Users\<user>\AppData\Local\VirtualStore\Program Files\Mozilla Firefox\updates
* Download a fresh Firefox copy from http://www.mozilla.com/firefox/all.html and save the file to the desktop.
* Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer.
* Don't remove personal data when uninstalling.
* 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.

I keep getting the foloowing error." the update couldnot be installed. please make sure there are no other copies of firefox running on your computer and then restart firefox to try again". i tryed to reinstall but no help.

error." the update couldnot be installed. please make sure there are no other copies of firefox running on your computer and then restart firefox to try again".

You already appear to be running the latest Firefox 7.0.1 version, so there should be no need to update.
*http://kb.mozillazine.org/Updates_reported_when_running_newest_version

ERROR MASSAGE-"The update could not be installed.Plase make sure there are no other copies of firefox running on your computer,and then restart firefox to try again".

<blockquote>Locking duplicate thread. 
Please continue here: [[/questions/870411]]</blockquote>
"The update could not be installed.Please make sure there are no other copies of Firefox running on your computer,and then restart Firefox to try again"this kind of error massage i found but there are no other copies of Firefox running on my computer.So please solve my prob.I can not uninstall this because i have saved important bookmark on my system.When i start my Firefox that time browser is opening few times later may be it's my internet slow connection but everyone has slow connection internet they are not having this prob then why should i have this prob.Why it is taking little bit time to open?

Thanks for the info about Trojan. It may be the problem. Meanwhile I went to Admin/Owner side and did some cleaning -- including trying to reload my Favorite/Bookmarks that have always carried forth from previous levels of Windows XP and earlier.
The new computer here did not grab the Bookmarks from the previous, and yesterday I thought I had them loaded, and today went to Worker-Bee side and they are not showing.
About those add-ons... I have no idea, but think I got everything up to date yesterday. I will look at your earlier reply tomorrow or this weekend when I have more time at home to learn from it.
Thank you for your time in helping.
Late here, heading to sleep. Marilyn

An update tries to run, but an error message stating "The update could not be installed. Please make sure there are no other copies of Firefox running on your computer, and then restart Firefox to try again." I can't open Firefox

I click on Firefox and it says that Firefox is installing your updates and will start in a few minutes. Then I get "The update could not be installed. Please make sure there are no other copies of Firefox running on your computer, and then restart Firefox to try again." this cycle never ends. Do I need to deinstall Firefox and re-install? If I do that, do i lose all of my bookmarks, etc?

See http://kb.mozillazine.org/Software_Update (Software Update not working properly)
Remove the files in the updates and updates\0 folder:
*C:\Documents and Settings\<user>\Local Settings\Application Data\Mozilla\Firefox\Mozilla Firefox\updates
*(%USERPROFILE%\Local Settings\Application Data\Mozilla\Firefox\Mozilla Firefox\updates)
*C:\Program Files\Mozilla Firefox\updates
*Do a clean reinstall and download a fresh Firefox copy from http://www.mozilla.com/firefox/all.html and save the file to the desktop.
*Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer. Do not remove personal data when uninstalling.
*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.
You can skip the step to create a new profile, that is not necessary for this issue.
See http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Clean_reinstall

"The update could not be installed. Please make sure there are no other copies of Firefox running on your computer, and then restart Firefox to try again"

I'm using Firefox 4 Beta and I tryed install update but I dont got success. Now every time that I go start the browser is displayed the mensage: "The update could not be installed. Please make sure there are no other copies of Firefox running on your computer, and then restart Firefox to try again"
My release is installed not in default drive C:\. I installed in the other Partition on my PC.
I don't have other release installed.

Try a clean re-install.
* Download the setup file from http://www.mozilla.com/en-US/firefox/RC (this is for the Firefox 4 release candidate)
* Uninstall Firefox, do not select the option to "Remove my Firefox personal data"
* Delete the Firefox installation directory - http://kb.mozillazine.org/Installation_directory
* Re-install Firefox
This process does not remove the Firefox user data such as bookmarks and passwords which are stored elsewhere in the profile folder.
You may also need to manually reset the Software Update feature by deleting the software update files as shown in the "Software Update not working properly" section here - http://kb.mozillazine.org/Software_Update

With the latest update I get the following error: The update could not be installed. Please make sure there are no other copies of Firefox running on your computer, and then restart Firefox to try again; suggestions, advice, help.

Help>About Firefox> says I am using Firefox/3.6.10./GTB7.1 I get a note from Mozilla that there is an update. I download it after granting permission to change my machine. I say OK. A green bar slides across the monitor announcing that the update is being downloaded. When I then assume it is being installed I get the following error: The update could not be installed. Please make sure there are no other copies of Firefox running on your computer, and then restart Firefox to try again. There are no other copies running. The machine is not on a network. I am using WIN7

Thanks for the info about Trojan. It may be the problem. Meanwhile I went to Admin/Owner side and did some cleaning -- including trying to reload my Favorite/Bookmarks that have always carried forth from previous levels of Windows XP and earlier.
The new computer here did not grab the Bookmarks from the previous, and yesterday I thought I had them loaded, and today went to Worker-Bee side and they are not showing.
About those add-ons... I have no idea, but think I got everything up to date yesterday. I will look at your earlier reply tomorrow or this weekend when I have more time at home to learn from it.
Thank you for your time in helping.
Late here, heading to sleep. Marilyn

Difficulty updating Firefox: "Please make sure there are no other copies of Firefox running on your computer.."

I have great difficulty updating Firefox . I'm told:
"The update could not be installed. Please make sure there are no other copies of Firefox running on your computer, and then restart Firefox to try again."''''''
However, there are no other copies of Firefox running. I tried rebooting the PC just to be sure all Firefox processes had been terminated but problem persists. '''Both user accounts of my PC have administrative privileges.
After trying to update Firefox for both users a number of times, it eventually updates, but process takes many tries and much time.

If there are problems with updating then best is to download the full version and uninstall the currently installed version and delete the Firefox program folder to remove any leftover files.
Download a fresh Firefox copy and save the file to the desktop.
*Firefox 10.0.x: http://www.mozilla.org/en-US/firefox/all.html
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 because all profile folders will be removed.
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.
*http://kb.mozillazine.org/Uninstalling_Firefox
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.
*http://kb.mozillazine.org/Profile_folder_-_Firefox
*http://kb.mozillazine.org/Profile_backup
*http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Clean_reinstall

My auto update is failing. I tried reboot and run as admin, but did not help. I get message: The update could not be installed. Please make sure there are no other copies of Firefox running on your computer, and then restart Firefox to try again.

I followed the instructions on the support page. I did a Windows restart. I cannot see how other copies of Firefox could be running. No other apps have been launched and Task Manager only shows one copy of Firefox and no other apps. I have tried several times and always get the same result.

Firefox [[Safe mode]] is a diagnostic mode that allows troubleshooting. 
You start the same version, only some features are disable like add-ons (Tools > Add-ons > Extensions).
See http://kb.mozillazine.org/Software_Update (Software Update not working properly)
Remove the files in the updates and updates\0 folder:
C:\Users\<user>\AppData\Local\Mozilla\Firefox\Mozilla Firefox\updates
(%LOCALAPPDATA%\Mozilla\Firefox\Mozilla Firefox\updates)
C:\Users\<user>\AppData\Local\VirtualStore\Program Files\Mozilla Firefox\updates
* Download a fresh Firefox copy from http://www.mozilla.com/firefox/all.html and save the file to the desktop.
* Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer.
* Don't remove personal data when uninstalling.
* 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.

My 3.6.14 keeps trying to update and gives this error message:"The update could not be installed. Please make sure there are no other copies of Firefox running on your computer, and then restart Firefox to try again."

My OS is Windows XP version service pack 3. I even tried to install FF4 but it never get installed. As I mentioned my FF keeps trying to update itself but it gives the error message I provided in title. Now I don't have access to my FF browser and my life is stopped because I have all my passwords saved on FF. I restarted my notebook but it stills try to update itself giving the same error message. I can not also upgrade my Adobe reader 7.0.7 to 10 I have tried more than 10 times but it never gets upgraded. I had this Adobe problem since long time ago.

Run the Firefox program once as Administrator (right-click: Run as Administrator). 
If that doesn't help then do a clean reinstall.
Do a clean (re-)install:
* Download a fresh Firefox copy and save the file to the desktop.
* http://www.mozilla.com/firefox/all.html
* Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer.
* Don't remove personal data if you uninstall the current version.
* 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 (not in the Firefox program 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.

The update could not be installed. Please make sure there are no other copies of Firefox running on your computer, and then restart Firefox to try again. I get this message when I try to install FF 7 and FF is NOT running! Help

Get this message everytime I try to upgrade from FF6 to 7. I have rebooted and tried again twice and still nothing. Shortly after I get the failed to install message FF6 starts up by itself. On top of all this some, if not all web pages, do not complete. Google Chrome works just fine. No fix for FF problems I will uninstall and use Google Chrome
e-mail: [email protected]

If there are problems with updating then best is to download the full version and uninstall the currently installed version.
Download a fresh Firefox copy and save the file to the desktop.
* Firefox 7.0.x: http://www.mozilla.com/en-US/firefox/all.html
* Uninstall your current Firefox version.
* 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.
* http://kb.mozillazine.org/Profile_folder_-_Firefox
* http://kb.mozillazine.org/Profile_backup
If files already have been downloaded then you may have to remove the files in the updates and updates\0 folder. 
You can delete active-update.xml and updates.xml as well if present.
C:\Documents and Settings\<user>\Local Settings\Application Data\Mozilla\Firefox\Mozilla Firefox\updates
(%USERPROFILE%\Local Settings\Application Data\Mozilla\Firefox\Mozilla Firefox)
The "Application Data" folder in XP/Win2K and the "AppData" folder in Vista/Windows 7 are hidden folders.
*http://kb.mozillazine.org/Show_hidden_files_and_folders

Why do I get "The update could not be installed. Please make sure there are no other copies of Firefox running on your computer, and then restart Firefox to try again." when loading Firefox with no explanation as to what is causing the problem?

When I load Firefox (since an upgrade to 3.6) I get error messages before it starts stating the quote above. The message does not specify which update and so when stability problems arose I stopped using Firefox in preference for another browser. I also get a message prompting me about Java which doesn't happen with any other browser. If I cannot get rid of these messages then I will continue to prefer other browsers.

No, if I used the version of Firefox that I had then not only did I have the problem that I described but also it crashed regularly.
As I said, the latest version does not appear to have these problems so with any luck I will be able to say that the upgrade has resolved the issues but it is too soon to be sure.

Win7pro update error: The update could not be installed. Please make sure there are no other copies of Firefox funning on your computer, and then restart Firefox to try again.

Receiving error message when updating FF6, and then after installing a fresh copy of FF7, when FF tried to update again.
This is happening with FF that is installed on my machine and with FF portable. Has anyone else experienced this?

Firefox [[Safe mode]] is a diagnostic mode that allows troubleshooting. 
You start the same version, only some features are disable like add-ons (Tools > Add-ons > Extensions).
See http://kb.mozillazine.org/Software_Update (Software Update not working properly)
Remove the files in the updates and updates\0 folder:
C:\Users\<user>\AppData\Local\Mozilla\Firefox\Mozilla Firefox\updates
(%LOCALAPPDATA%\Mozilla\Firefox\Mozilla Firefox\updates)
C:\Users\<user>\AppData\Local\VirtualStore\Program Files\Mozilla Firefox\updates
* Download a fresh Firefox copy from http://www.mozilla.com/firefox/all.html and save the file to the desktop.
* Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer.
* Don't remove personal data when uninstalling.
* 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.

Launch Firefox & message "The update could not be installed. Please make sure there are no other copies of Firefox running on your computer & then re-start Firefox again, But I don't have other copies running.

Launch Firefox & message says update couldn't be installed. Check no other copies running, but none are

Upgrade your browser to Firefox 8 and check
* getfirefox.com

The update could not be installed. Please make sure there are no other copies of Firefox running on your computer, and then restart Firefox to try again.I had this problem last year with thunderbird but forgot what I had to close to get it resolved

this was a prompted update.

Thanks for the info about Trojan. It may be the problem. Meanwhile I went to Admin/Owner side and did some cleaning -- including trying to reload my Favorite/Bookmarks that have always carried forth from previous levels of Windows XP and earlier.
The new computer here did not grab the Bookmarks from the previous, and yesterday I thought I had them loaded, and today went to Worker-Bee side and they are not showing.
About those add-ons... I have no idea, but think I got everything up to date yesterday. I will look at your earlier reply tomorrow or this weekend when I have more time at home to learn from it.
Thank you for your time in helping.
Late here, heading to sleep. Marilyn

This note appears when Firefox is launched from a non administrator user. How do I get rid of it? "The update could not be installed. Please make sure there are no other copies of Firefox running on your computer, and then restart Firefox to try again."

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