This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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

I cannot launch Firefox (suddenly) nor can I open Profile Manager, what next?

  • 3 cavab
  • 2 have this problem
  • 3 views
  • Last reply by John99

more options

Windows 7, 64 bit. Experienced some Windows updates but I restored to prior to the updates and still cannot open Firefox. Can open Safari and IE.

Windows 7, 64 bit. Experienced some Windows updates but I restored to prior to the updates and still cannot open Firefox. Can open Safari and IE.

Chosen solution

There is a problem fairly soon in the process if profile manager will not start. You could try in Firefox's safe-mode next you could try in Windows safemode by using the F8 key.

From what you say I am wondering if you have done a Windows restore of some form and recreated Firefox that way. Firefox does not always restore properly from Windows. You may be looking at re-installing Firefox.

If you consider re-installing do NOT take any options from Windows or Firefox that offers to delete personal settings because that will destroy things like passwords and bookmarks.

Read this answer in context 👍 1

All Replies (3)

more options

Seçilmiş Həll

There is a problem fairly soon in the process if profile manager will not start. You could try in Firefox's safe-mode next you could try in Windows safemode by using the F8 key.

From what you say I am wondering if you have done a Windows restore of some form and recreated Firefox that way. Firefox does not always restore properly from Windows. You may be looking at re-installing Firefox.

If you consider re-installing do NOT take any options from Windows or Firefox that offers to delete personal settings because that will destroy things like passwords and bookmarks.

more options

I always like the simple first so I simply redownloaded Firefox...it worked. Nothing seems to be lost.

more options

Glad it worked. Thanks for posting back.

Some may consider the the other options simpler!