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. Əgər kömək lazımdırsa lütfən yeni sual verin.

When trying to open a link in another program and FF is running, am now getting error message that Firefox is running.

  • 2 cavab
  • 5 have this problem
  • 51 views
  • Last reply by Victory

Victory
Victory
more options

Running FF 55.0.3 (64 bit) on Windows 10 and have used FF as my default browser for years with no issues. Starting a week ago, if Firefox is running and I click on a link in any other program (e.g., Outlook, Adobe, etc) I get the error message: 

  "Firefox is already running, but is not responding.  The old Firefox process must be closed to open a new window."

In the past, clicking on these links has always resulting in the url opening in a new tab/window in the current Firefox session. This problem does not exist if I switch to Chrome as my default browser.

Running FF 55.0.3 (64 bit) on Windows 10 and have used FF as my default browser for years with no issues. Starting a week ago, if Firefox is running and I click on a link in any other program (e.g., Outlook, Adobe, etc) I get the error message: "Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window." In the past, clicking on these links has always resulting in the url opening in a new tab/window in the current Firefox session. This problem does not exist if I switch to Chrome as my default browser.

Chosen solution

This can happen if you have started Firefox with the -no-remote command line switch. In that case you can't open external links in Firefox with a double-click and you would have to drag the link in a Firefox tab.

If you have a MOZ_NO_REMOTE environment variable then remove this variable and do not change its value to 0 because that doesn't work (Firefox checks for its existence and not the value).

Read this answer in context 👍 1

All Replies (2)

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

Seçilmiş Həll

This can happen if you have started Firefox with the -no-remote command line switch. In that case you can't open external links in Firefox with a double-click and you would have to drag the link in a Firefox tab.

If you have a MOZ_NO_REMOTE environment variable then remove this variable and do not change its value to 0 because that doesn't work (Firefox checks for its existence and not the value).

Victory
Victory Question owner
more options

Thank you ! I had read those links several times, but did not know how to find the environment variable to remove it. A bit more searching did the trick.

I was having trouble with LastPass add-on last week. Their support had me create a new profile. Somewhere along the way, I remember making a change to allow me to view both profiles simultaneously. After getting LP running correctly, I could not recall the changes I had made. A full uninstall and reinstall of firefox did not help. Everything appears to be back to normal now. Thanx again.