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 is already running, but is not responding

  • 1 reply
  • 1 has this problem
  • 8 views
  • Last reply by barnacle

barnacle
barnacle
more options

Firefox ESR 60.0.2

Background: Firefox running on terminal server - with multiple users connecting GPO in place to restrict access to C: Firefox installed on C: users profiles are stored on a network share (including App data)

Issue: Every time Firefox is launched either (cyclically, the user sees a message that there was an error restoring the last session, or an error message "Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window." is displayed."

Tried: re-installing Firefox deleting parent.lock starting with addons disabled

My thoughts are that this is either to do with the App data profile stored on a network share, or that the local install is on C: which is no longer accessable for the users (however application is still able to launch, and no other local applicaitons are effected.).

Firefox ESR 60.0.2 Background: Firefox running on terminal server - with multiple users connecting GPO in place to restrict access to C: Firefox installed on C: users profiles are stored on a network share (including App data) Issue: Every time Firefox is launched either (cyclically, the user sees a message that there was an error restoring the last session, or an error message "Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window." is displayed." Tried: re-installing Firefox deleting parent.lock starting with addons disabled My thoughts are that this is either to do with the App data profile stored on a network share, or that the local install is on C: which is no longer accessable for the users (however application is still able to launch, and no other local applicaitons are effected.).

All Replies (1)

barnacle
barnacle Question owner
more options

EDIT: when using an admin account (not linked to the GPO to block C: access & storing the profile locally) I do not see the above error message. It is just for users who are restricted access to C: and have their profile on the network share.