We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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

Firefox does not open, profile manager does not open, not listed in task manager

  • 3 replies
  • 1 has this problem
  • 2 views
  • Last reply by Tim

more options

firefox worked fine about two days back. Our norton expired so I downloaded Kaspersky Anti-Virus 12.0.0.374. I don't know if that has any connection to firefox not working.

I click on the icon, nothing happens. The task is not mentioned in the task manager.

I try to run it in safe mode, nothing happens. I try to open the profile manager, nothing happens! What can I do to fix this?

firefox worked fine about two days back. Our norton expired so I downloaded Kaspersky Anti-Virus 12.0.0.374. I don't know if that has any connection to firefox not working. I click on the icon, nothing happens. The task is not mentioned in the task manager. I try to run it in safe mode, nothing happens. I try to open the profile manager, nothing happens! What can I do to fix this?

Chosen solution

Can you run Firefox if you temporarily disable Kapersky?

You might want to download and re-install Firefox if the above doesn't work

Read this answer in context 👍 0

All Replies (3)

more options

Chosen Solution

Can you run Firefox if you temporarily disable Kapersky?

You might want to download and re-install Firefox if the above doesn't work

more options

Thank you fmdeveloper! I did some more research after I posted the question and it turns out Kaspersky was not the issue. I had done a system restore two days back and it says online that after a system restore, you have to uninstall and reinstall firefox. So I uninstalled it (kept my settings and data) and reinstalled it and voila, it works!

I did switch from Kaspersky to Avira too for Anti-vifus, don't know if that's a sane decision or not, but it's good to know that Kaspersky was not the culprit!

more options

Glad to hear - thanks for reporting back