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.

ابحث في الدعم

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

Can not run multiple firefox windows with version 4

  • 2 (ردّان اثنان)
  • 12 have this problem
  • 3 views
  • آخر ردّ كتبه warren516

more options

After the upgrade to FF4 the problem started happening. In ver 3 I used the profile manager and was able to run 2 firefox windows at the same time with no problems in Windows 7.

Now when I try to do this with version 4, one firefox window errors out with 'firefox stopped working'

I thought it was due to an incompatible add on or something, so I did a complete program removal, rebooted, cleaned the registry and removed all folders that firefox put on my system. The problem continues.

After the upgrade to FF4 the problem started happening. In ver 3 I used the profile manager and was able to run 2 firefox windows at the same time with no problems in Windows 7. Now when I try to do this with version 4, one firefox window errors out with 'firefox stopped working' I thought it was due to an incompatible add on or something, so I did a complete program removal, rebooted, cleaned the registry and removed all folders that firefox put on my system. The problem continues.

الحل المُختار

You can only run multiple version at the same time if the next version is started with the -no-remote switch added to the command line in the desktop shortcut.

"C:\Program Files\Mozilla Firefox XX\firefox.exe" -no-remote -P


Read this answer in context 👍 0

All Replies (2)

more options

الحل المُختار

You can only run multiple version at the same time if the next version is started with the -no-remote switch added to the command line in the desktop shortcut.

"C:\Program Files\Mozilla Firefox XX\firefox.exe" -no-remote -P


more options

I had the -no-remote and -P in my command line.

I ended up reading some more about profiels from the links you provided. I decided to delete the profile and shortcut and start all over. It now works. Thanks