Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. اگر به کمک نیاز دارید لطفاً یک سؤال بپرسید.

Firefox browser won't open

  • 2 پاسخ
  • 2 have this problem
  • 8 views
  • آخرین پاسخ توسّط dmay0227

dmay0227
dmay0227
more options

I'm trying to install the Firefox browser on my Windows 7 laptop. The installation seems to work, but once I attempt to start the browser, it appears on my task list for a few seconds, then just disappears with no error or anything like that. I've tried holding Shift to start in Safe Mode, but it doesn't change anything. I guess it doesn't even get far enough to check for that before closing. I've tried reinstalling it many times, but nothing has changed. How can I make Firefox start properly?

I'm trying to install the Firefox browser on my Windows 7 laptop. The installation seems to work, but once I attempt to start the browser, it appears on my task list for a few seconds, then just disappears with no error or anything like that. I've tried holding Shift to start in Safe Mode, but it doesn't change anything. I guess it doesn't even get far enough to check for that before closing. I've tried reinstalling it many times, but nothing has changed. How can I make Firefox start properly?

All Replies (2)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

It is possible that your security software (firewall, anti-virus) blocks or restricts Firefox or the plugin-container process without informing you, possibly after detecting changes (update) to the Firefox program.

Remove all rules for Firefox and the plugin-container from the permissions list in the firewall and let your firewall ask again for permission to get full, unrestricted, access to install for Firefox and the plugin-container process and the updater process.

See:

Boot the computer in Windows Safe Mode with network support (press F8 on the boot screen) as a test.

Modified by cor-el

dmay0227
dmay0227 Question owner
more options

I already used Safe Mode and somehow it fixed it altogether; it even works outside of safe mode now. Still, thanks for the help.