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Firefox 3.5.1 running on Vista has stopped working. No error messages. Have tried to uninstall and also install newer version, and get a message saying I must first close Firefox (which of course is not visibly running)

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  • Last reply by Moses

AnonymousUser
AnonymousUser
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Firefox 3.5.1 running on Vista has stopped working, no error messages. Tried to uninstall and install updated version. Get message that I must first close Firefox, however it is not visibly running.

This happened

Not sure how often

I restored my system to an earlier date , December 2009

User Agent

Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; OfficeLiveConnector.1.3; OfficeLivePatch.0.0; Dealio Toolbar 3.1.1; .NET CLR 3.5.30729; .NET CLR 3.0.30618; .NET4.0C; AskTbWCL/5.8.0.12304)

Firefox 3.5.1 running on Vista has stopped working, no error messages. Tried to uninstall and install updated version. Get message that I must first close Firefox, however it is not visibly running. == This happened == Not sure how often == I restored my system to an earlier date , December 2009 == == User Agent == Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; OfficeLiveConnector.1.3; OfficeLivePatch.0.0; Dealio Toolbar 3.1.1; .NET CLR 3.5.30729; .NET CLR 3.0.30618; .NET4.0C; AskTbWCL/5.8.0.12304)

Chosen solution

Firefox may not be running visibly but is probably running in the background. It is in the task manager. To access the task manager go to Start and type in the search field taskmgr. That will open the Task Manager process. Then go to Processes tab and end firefox.exe. After ending that process, close Task Manager and try running the installation/uninstallation again.

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Moses
Moses
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Chosen Solution

Firefox may not be running visibly but is probably running in the background. It is in the task manager. To access the task manager go to Start and type in the search field taskmgr. That will open the Task Manager process. Then go to Processes tab and end firefox.exe. After ending that process, close Task Manager and try running the installation/uninstallation again.

Chris Ilias
Chris Ilias
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You should update to the latest version. See Update Firefox to the latest release