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Mozilla worked-now it won't start, nor will Profile Manager

  • 6 replies
  • 2 have this problem
  • 2 views
  • Last reply by ideato

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1. Mozilla worked on Sunday but won't open on Monday - Error Message from Windows 7- "Firefox has Stopped Working". 2. Rebooted and then Deleted and Reloaded upgrade -Mozilla fails to open. 3. Reset Windows to earlier date ( one month ago) -Mozilla fails to Open. 4. Loaded complete version of Mozilla but failed to open. 4. Tried to Open Profile Manager using ; Windows key + R with the full 64 Bit Windows Address ( C: \Program Files (x86)\Mozilla Firefox\firefox.exe -p -failed to Open 5. Profile Manager opens and then immediately fails with Windows 7 message "Firefox has Stopped Working" 6. I use Vipre antivirus which has latest antivirus updates-did a full scan-no reported viruses other than cookies. 7. Checked firewall in settings of Vipre and added Firefox as a permitted program. 8. I am concerned that if I go into Safe mode I may inadvertently damage the operating Windows Program-I am not a computer technician and wish to do no harm to the system. 9. I have run out of ideas-Do you have a solution -PLEASE!

1. Mozilla worked on Sunday but won't open on Monday - Error Message from Windows 7- "Firefox has Stopped Working". 2. Rebooted and then Deleted and Reloaded upgrade -Mozilla fails to open. 3. Reset Windows to earlier date ( one month ago) -Mozilla fails to Open. 4. Loaded complete version of Mozilla but failed to open. 4. Tried to Open Profile Manager using ; Windows key + R with the full 64 Bit Windows Address ( C: \Program Files (x86)\Mozilla Firefox\firefox.exe -p -failed to Open 5. Profile Manager opens and then immediately fails with Windows 7 message "Firefox has Stopped Working" 6. I use Vipre antivirus which has latest antivirus updates-did a full scan-no reported viruses other than cookies. 7. Checked firewall in settings of Vipre and added Firefox as a permitted program. 8. I am concerned that if I go into Safe mode I may inadvertently damage the operating Windows Program-I am not a computer technician and wish to do no harm to the system. 9. I have run out of ideas-Do you have a solution -PLEASE!

All Replies (6)

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First make a backup of your profile folder as described here.

and recovering important data from an old profile

Modified by listeruk

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I have many automatic backups of my Windows Restore Points. Does that backup the profile folder? When I open the profile folder there is no list of a command to backup or copy the profiles. Please go step by step.

I have restored the system twice-I only have System Mirror Points left-won't that erase all data and files prior to that date? Thank You for your efforts?

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Once you click the 'Show Folder' button, a Windows Explorer window will open.

With Firefox closed, go up one folder and then you can simply copy/paste ( don't drag ) the folder (should be named along the lines of *alphanumeric string*.default) to the desktop. And/or drag to another hard drive - it's good to have 2 copies, for safety.

No need to access Windows Restore.

Once the profile is safely duplicated, then you can uninstall (and delete the user information (profile) and reinstall a fresh copy of Firefox. then follow the following to restore data from the saved profile - recovering important data from an old profile.

You can copy extensions back, but the only irreplaceable items (imo) are bookmarks and passwords. But that's just my preference.

Of course, Firefox's problems could be a symptom of larger issues like, virus/malware or failing hard drives etc. Running a an AV and Malware scan couldn't hurt and checking Windows Event Viewer for system and application faults (take note of the times when you tried to open Firefox and check corresponding entries.

Modified by listeruk

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Hello RobinHood99,

you can check it in Windows Safe mode with network support (press F8 on the boot screen) and then allows to open Firefox.

You can not damage the operating system in Windows safe mode. To exit Windows safe mode, restart your computer and let Windows start normally.

(If works in Windows Safe mode then you have a problem with other software, like security software or maybe a system driver, that is running on your computer).


thank you

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Thanks guys for the road signs!

I have used both of your advice:

1. Deleted Firefox and reloaded. 2. Backed up Profile on my computer as a separate file, and on a discreet drive. 3. Opened Computer in Safe Mode, and was able to open Firefox BUT it would not connect to the internet. 4. Received Error Message: "Content Watch Installation, contact help" 5. Is this error in Firefox or in Windows? 6. How do I reinstall Content Watch"?

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Probably you have the Net Nanny software, i think you must remove it....... go from Start button > Control Panel > Programs > Programs and Features > Uninstall.

any luck ?


thank you