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

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

This thread was archived. Please ask a new question if you need help.

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

  • 2 (ردّان اثنان)
  • 5 have this problem
  • 1 view
  • آخر ردّ كتبه 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.

الحل المُختار

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

الحل المُختار

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 صاحب السؤال
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.