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.

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. Please ask a new question if you need help.

Firefox will not run for mulitple instances of the SAME user account on Windows Multipoint Server 2011

  • 2 replies
  • 3 have this problem
  • 2 views
  • Last reply by pjdtts

pjdtts
pjdtts
more options

We have an HP MS6200 MulitSeat PC It is running Microsoft Windows MultiPoint Server 2011 (which appears to be a tweaked version of Windows 7) It is set up in a computer lab, and students log in using their shared room account - ie multiple instances of the same user accounts are running on the PC at the same time. The first student to run Firefox can work with it without problem. However when another student tries to start firefox they get the following message: Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system.

We have an HP MS6200 MulitSeat PC It is running Microsoft Windows MultiPoint Server 2011 (which appears to be a tweaked version of Windows 7) It is set up in a computer lab, and students log in using their shared room account - ie multiple instances of the same user accounts are running on the PC at the same time. The first student to run Firefox can work with it without problem. However when another student tries to start firefox they get the following message: Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system.

Chosen solution

You can't start Firefox using a profile that is already used by someone else. Each Firefox instance needs its own profile or you will get that error message.

Use the -no-remote command line switch to open another Firefox instance with its own profile and to run different Firefox instances simultaneously.

Read this answer in context 👍 1

All Replies (2)

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

Chosen Solution

You can't start Firefox using a profile that is already used by someone else. Each Firefox instance needs its own profile or you will get that error message.

Use the -no-remote command line switch to open another Firefox instance with its own profile and to run different Firefox instances simultaneously.

pjdtts
pjdtts Question owner
more options

Thanks for the quick reply. I managed to get this to work by using: "C:\Program Files (x86)\Mozilla Firefox\firefox.exe" -profile "%temp%\ffprof" -no-remote

This works because Windows assigns a different temp location for each instance of a user

Thanks for your help