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I was updated to Firefox 36 automatically, however, it won't start. I have tried firefox safe mode, reinstalling, uninstalling avg antivirus, eks.

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Computer rebooted overnight to install updates. Everything else was fine, but now Firefox, which was updated to version 36, will not launch. Basically, I double click on it, I get a little disk access, and then nothing. I have tried starting in firefox safe mode. Same thing happens. I have uninstalled by deleting entire Mozilla Firefox from program files and reinstalling. Still won't start. I have uninstalled an old version of AVG. Still won't start. I have Microsoft Security Essentials running, and have updated it. Still won't start. I need some new ideas.

Computer rebooted overnight to install updates. Everything else was fine, but now Firefox, which was updated to version 36, will not launch. Basically, I double click on it, I get a little disk access, and then nothing. I have tried starting in firefox safe mode. Same thing happens. I have uninstalled by deleting entire Mozilla Firefox from program files and reinstalling. Still won't start. I have uninstalled an old version of AVG. Still won't start. I have Microsoft Security Essentials running, and have updated it. Still won't start. I need some new ideas.

Chosen solution

I just want to confirm one step that you took. When you say you deleted the Firefox content from program files, this may not have taken all of the Firefox related components off of your computer.

The steps you should follow to remove a potentially damaged install of firefox are:

Open your start menu, select 'program files'. In program files, select 'Programs and Features', this should open your 'Uninstall or change a program' window. In this window locate your 'Mozilla Firefox' program. Select the program with a left click then select 'Uninstall', which should appear once the program is highlighted.

This process will remove changes to the registry that may be causing issues. After fully uninstalling firefox from your programs, perform a fresh install of the latest version of the browser.

If you have already performed this process with no success then there may be other issues related to your recent windows updates, this is not uncommon. If you are having issues after a fresh install of Firefox, after using the instructions above, please check to see if your 'Internet Explorer' browser is having the same issues, if so then you may have more serious problems that will require further action.

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Seçilmiş Həll

I just want to confirm one step that you took. When you say you deleted the Firefox content from program files, this may not have taken all of the Firefox related components off of your computer.

The steps you should follow to remove a potentially damaged install of firefox are:

Open your start menu, select 'program files'. In program files, select 'Programs and Features', this should open your 'Uninstall or change a program' window. In this window locate your 'Mozilla Firefox' program. Select the program with a left click then select 'Uninstall', which should appear once the program is highlighted.

This process will remove changes to the registry that may be causing issues. After fully uninstalling firefox from your programs, perform a fresh install of the latest version of the browser.

If you have already performed this process with no success then there may be other issues related to your recent windows updates, this is not uncommon. If you are having issues after a fresh install of Firefox, after using the instructions above, please check to see if your 'Internet Explorer' browser is having the same issues, if so then you may have more serious problems that will require further action.

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v131 said

Computer rebooted overnight to install updates. Everything else was fine, but now Firefox, which was updated to version 36, will not launch. Basically, I double click on it, I get a little disk access, and then nothing. I have tried starting in firefox safe mode. Same thing happens. I have uninstalled by deleting entire Mozilla Firefox from program files and reinstalling. Still won't start. I have uninstalled an old version of AVG. Still won't start. I have Microsoft Security Essentials running, and have updated it. Still won't start. I need some new ideas.

I had previously tried the add/remove program route, without success. But this time I also allowed the check box that said make Firefox the default browser to stay checked. Also, I agreed when it asked if I wanted to start firefox upon completion of install. I am not sure why, but this sequence worked and I now have firefox running. Thanks for your help!