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Can't open html files without first closing Firefox (

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  • 1 has this problem
  • 12 views
  • Last reply by Gustavo

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Everytime I try to open an html file, I need to first close Firefox. A message with the error message "Firefox is already running but is not responding the old firefox process must be closed" appears, and the file only opens if I select the "close" option. After the first time I do it, the problem stops and the next tries open the files without any issues. If I drag a html file to a firefox tab it also opens normaly, without any issue.

This problem started after I set up more than one profile in Firefox. The issue occur both on the default profile or other profiles.

Based on some advice I found online, I tried two solutions: - Run firefox with the -no-remote option. - Delete the parent.lock file on the profile folder.

Neither solved the problem.

Does anyone had a similar problem? Did you manage to solve it? It is a minor issue, but it happens every single day and gets very annoying.

I uploaded an screenshot of the error message that appears when I try to open the file for the first time. I also recorded a video for more details: https://imgur.com/a/P0Qpz8f

Attached screenshots

Chosen solution

You need to run Firefox without the -no-remote command line switch because using this switch will hide this Firefox instance.
Also make sure that you do not have a MOZ_NO_REMOTE environment variable.

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Chosen Solution

You need to run Firefox without the -no-remote command line switch because using this switch will hide this Firefox instance.
Also make sure that you do not have a MOZ_NO_REMOTE environment variable.

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Hi cor-el, thanks for the reply.

It worked! I did test both with and without the -no-remote parameter before, but I messed up and the firefox shortcut on my taskbar kept the -no-remote parameter.

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