On my laptop I cannot open up Mozilla browzer because it say it is allready running, but it is not even after shutting computer off an restarting. How do I turn it off

I cannot get on line because it states it is already running. This has happened before and it tells me I should restart computer which works, but this weekend it has not worked and it keeps telling me it is still working. This is not the laptop that I am having trouble with that is why I can ask my question. The one with the problem is Windows XP. Now every time time I go to open the browser it looks like it is starting up and then nothing no matter how long you wait

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.
* Firefox 8.0.x: http://www.mozilla.com/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 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.
You can force Firefox to create a new default profile if you remove the profiles.ini file.
* http://kb.mozillazine.org/profiles.ini_file
You can find that file here:
C:\Users\<user>\AppData\Roaming\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
*http://kb.mozillazine.org/Profile_folder_-_Firefox
*http://kb.mozillazine.org/Profile_backup
*http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Clean_reinstall
*http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

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Firefox was working just fine but the last few days it won't let me open it because it says it's already running but it's not how do I close it to open it?

This is the message I get whenever I click on the Foxfire icon on my computer. Even when it has been down for hours:"Foxfire is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system."

See also https://support.mozilla.com/kb/Firefox+is+already+running+but+is+not+responding

My firefox won't open at all on my user id on Windows 7, it keeps saying 'Firefox is allready running but isn't responding' etc.

I install firefox normally, on my user id on Windows 7. But it won't open. It keeps saying 'Firefox is allready running but isn't answering. A new window can't be opened until all of firefox' processes have been shut down or the system rebootet.
This is a translation of the text as my user language is finnish.
I've also checked my fathers user id on this computer, there the firefox works, no problem.
I suspect the problem was born when I tried to take an old firefox backup into use. I think I did it wrong... Or, the backup was to old.

You can try to move the entire Firefox folder to a different location to make Firefox create a new file structure for the profile folder.
* Vista/Windows 7: C:\Users\<user>\AppData\Roaming\Mozilla\Firefox\
* "Application Data" in XP/Win2K and "AppData" in Vista/Windows 7 are hidden folders.
* Use %APPDATA% in the File name field
* http://kb.mozillazine.org/Show_hidden_files_and_folders
Go to: Control Panel > Folder Options > "View" tab > under "Hidden files and folders", select "Show hidden files and folders" 
To see the file extensions of all files uncheck the box "Hide extensions for known file types"
See also:
* http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

My firefox is running in the background, unvisible. It will not allow me to uninstall/ reinstall because it says it is running. I cannot create a new profile because it says that firefox is running? How do I fix this??

I have tried restarting my computer, tried uninstalling, tried reinstalling but it always tells me that Firefox is open and running. When I select the task manager, there is no "firefox" under process. I have tried checking to make sure that the "read only" box is not checked under the profile properties. it seems like my only option now is to create a new profile. However, the profile manager won't even come up because it says firefox is running in the background. So frustrating!

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.
* Firefox 8.0.x: http://www.mozilla.com/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 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.
You can force Firefox to create a new default profile if you remove the profiles.ini file.
* http://kb.mozillazine.org/profiles.ini_file
You can find that file here:
C:\Users\<user>\AppData\Roaming\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
*http://kb.mozillazine.org/Profile_folder_-_Firefox
*http://kb.mozillazine.org/Profile_backup
*http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Clean_reinstall
*http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

I installed the latest version of iTunes but when I go to open I get an error message saying I need to reinstall but it will not let me

So I downloaded the latest iTunes 10 version. When I go to open iTunes I get an error message C:\Program Files (x86)\Common Files\Apple\Apple Application Support\QuartzCore.dll is either not designed to run on Windows or it contains an error. Try installing the program using the original installation media or contact your system administrator or the software vendor for support. So I tried to download it again and I get a little box saying Repair or Remove and I have tried to do both but then I get an error message saying another installation is in process and to try again later. Anyone have any ideas on how to fix this?? Any help is greatly appreciated.

If you run into the "another installation" message even after the reboot of the PC (which is an excellent idea by HTP ProXy), reregistering your Windows Installer Service is worth a try.
First, launch a command prompt as an administrator. In your Start search, type cmd then right-click on the cmd that comes up and select "Run as administrator".
At the command prompt:
Type %windir%\system32\msiexec.exe /unregister and hit enter.
Type %windir%\syswow64\msiexec.exe /unregister and hit enter.
Type %windir%\system32\msiexec.exe /regserver and hit enter.
Type %windir%\syswow64\msiexec.exe /regserver and hit enter.
Restart the PC and try another reinstalll.

Downloaded firefox, put as default but when i try to open i get a window that says "firefox is already running but is not responding. To open new window close the existing firefox process or restart computer" i restarted but still get message.

My plug-ins are up to date

Do you still have the default profile as listed in profiles.ini?
*http://kb.mozillazine.org/profiles.ini_file
See:
* http://kb.mozillazine.org/Recovering_a_missing_profile
* http://kb.mozillazine.org/Profile_in_use

Hi, I cannot make Foxfire my default browser. There is no tool bar whether or not the page is maximized or not. When I change it in Safari, it looks like Foxfire will be my default browser, but it's not even after restarting. Thanks. Vickie

There is no tool bar in Foxfire--it doesn't matter if the page is maximized or not as indicated in one article. I changed the default browser in "preferences" on Safari, but it didn't REALLY change it.

See View > [X] Status Bar

Adobe Reader says I have it but I cannot look at certain statements because it says I need Adobe Reader, but I have it! Feeling frustrated!!!

I keep running into problems seeing documents and such on Safari. When I go to a page it says I need Adobe Reader to view it but I already have the newest Adobe Reader on my computer. I really need to fix this! Can anyone help me?

This is what it says. I have done all of this and it still does not let me view the page.
Before viewing PDF documents in this browser you must launch Adobe Reader and accept the End User License Agreement, then Quit and relaunch the browser.

After I've closed Firefox and try to re-open it, it'll say it's already running. Have had to re-boot my computer several times a day to get it running again. HELP!!!!

This is a problem that I've been experiencing for the last month. After I've had Firefox open and then close it, when I try to re-open it, it says it's already running, but I have to re-boot my computer to get it going again. I have had to re-boot 5 times just today alone. What's up with that, and how can it be fixed??!!

See "Hang at exit":
*http://kb.mozillazine.org/Firefox_hangs
*https://support.mozilla.com/kb/Firefox+hangs

I downloaded Firefox 4 onto my PowerPC G4 1.67GHz running Mac OSX 10.5.6. When I try to open it I get error message You cannot open the application "Firefox" because it is not supported on this architecture. I can't find my Firefox 3.6.16 I'm on Safari.

I just want to download Firefox 3.6 again
I downloaded Firefox 4 onto my PowerPC G4, 1.67GHz running Mac OSX 10.5.6. When I try to open it I get error message You cannot open the application “Firefox” because it is not supported on this architecture.

Use Tony's suggestion. I am running it right now and it is awesome. I love Mozilla but they basically screwed all of those older Macs over. Come on Mozilla. These Macs still work, and there are plenty of people with them out there.

I am trying to install Firefox 4 on my Mac OS 10.5.8 and I get the error message "You cannot open the application "Firefox" because it is not supported on this architecture" Help!

I am trying to install Firefox 4 on my Mac OS 10.5.8 and I get the error message "You cannot open the application "Firefox" because it is not supported on this architecture" Help!

Firefox 4 requires at least OS X 10.5 and an Intel Mac. There is a third party version of Firefox 4 that runs on OS X 10.4/10.5 and PPC Macs, for details see http://www.floodgap.com/software/tenfourfox
If you prefer, you can get the latest version of Firefox 3.6 from http://www.mozilla.com/en-US/firefox/all-older.html
Mozilla are working to prevent Mac users with non-compatible systems from getting the notification about Firefox 4, and also not displaying the "Download Firefox 4" button on http://www.mozilla.com

Went to upgrade and says OS too old. I went back to older version of foxfire. Now I have a circle with a line through it and when I try to open it I get,You cannot open the application "Firefox" because it is not supported on this architecture.

I have PowerBook G4, running 10.5.8. Went to upgrade and says OS too old. I went back to older version of foxfire. Now I have a circle with a line through it and when I try to open it I get,You cannot open the application “Firefox” because it is not supported on this architecture. Thanks for the help.

Firefox 3.6.x is the last available from Mozilla for PPC Macs. 
http://www.mozilla.com/en-US/firefox/all-older.html
For older Macs that aren't supported in Firefox 4+ versions, try TenFourFox for PowerPC's running Mac 10.4.11 & 10.5.8 . 
http://www.floodgap.com/software/tenfourfox/ 
http://tenfourfox.blogspot.com/ 
https://code.google.com/p/tenfourfox/wiki/PluginsNoLongerSupported

I am working in text edit and cannot open my file. Error message says it is in the wrong format, truncated or corrupted. what to do?

I am working in text edit and cannot open my file. Error message says it is in the wrong format, truncated or corrupted. what to do?

Try opening Disk Utility in your Applications-Utilities folder and repair permissions.

I have an issue that I cannot open Firefox, and I get the message "Firefox is already running..." and it says I need to close it or restart my computer.

There is a page on the support site that attempts to adress the issue...but it never says how to fix it. https://support.mozilla.com/en-US/kb/Firefox+is+already+running+but+is+not+responding
Apparently there is a problem with the "profile", and on this support page, it has a link about working with the profile...if you go to that page, is tells you where the profile is, and the many things it does...but it does NOT say actually how to fix this problem. It tells you to go the the Help tab at the top of the browser, then select "Troubleshooting", and then under Profile, select "Open Containing folder"...which brings up the folder with all the files...but from there...it doesn't say what to do. I also have gone to the Start tab at the bottom of Windows (Windows XP--I've got Firefox 3.6.9) then Run and opened the profile box...but there are no instructions on what to do to fix the problem. I can open Firefox only by going to Crtl-Alt Delete and opening the process tab and ending the Firefox process...but this is not a fix. Help! thanks...

You need "sysinternal's process explorer", it is free and can replace the Microsoft process explorer, that you get by "CTRL+ALT+DELETE". Either program will allow you to kill the instances of FF that didn't die as they should have, when you closed them. Sysinternal is easier to use, it is a graphic display with many options. Do not push "CTRL+ALT+DELETE" twice unless you want to reboot, that is its default behaviour under Microsoft.

I have been editing a document on my MacBook Pro and iPad, which has the newer versions of Pages. Now, I cannot open on My MacBook. It says I need a newer version of OS. However, I'm not showing a newer version being availabe!!! Can anyone help???

I have been editing a document on my MacBook Pro and iPad, which has the newer versions of Pages. Now, I cannot open on My MacBook. It says I need a newer version of OS. However, I'm not showing a newer version being availabe!!! Can anyone help???

That is Pages for iPad v2.0, which Pages '09 v4.3 can't read.
You need to either stick with the older version of Pages on the iPad or get Pages 5 for the Mac which is only available if you are running OSX 10.9 Mavericks.
Unfortunately that is not the end of your woes because Apple has made iCloud convert the files to Pages 5 now, and Pages 5 has over 90 features deleted on top of doing a shocking job of converting older Pages files.
Peter

On my laptop I cannot open up Mozilla browzer because it say it is allready running, but it is not even after shutting computer off an restarting. How do I turn it off

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