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launching firefox in safemode just attaches to existing process instead of launching a new instance in safemode

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  • Last reply by cor-el

furkansahin824
furkansahin824
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Howdy,

Workflow: I have a firefox instance already running. I want to launch a new firefox in safe-mode to test something without disrupting my existing firefox.

Problem: I try to launch a new firefox in safe mode using `firefox --safe-mode`, but firefox just opens a new window NOT in safe mode.

I think it may because firefox in safe-mode requires launching launching from a new instance rather than attaching to existing instance.

`firefox --help` shows a flag I can use:

--new-instance Open new instance, not a new window in running instance. --safe-mode Disables extensions and themes for this session.

So I run `firefox --safe-mode --new-instance`

now I get error popup with message: 

"Firefox is already running, but is not responding. To use Firefox, you must first close the existing Firefox process, restart your device, or use a different profile."

Now I think what is the point of the flag "new-instance" if Firefox doesn't support multiple instances?

Regardless, how can I launch firefox in safe-mode without disrupting my existing firefox instance and without relying on creating a profile just for this?

Howdy, Workflow: I have a firefox instance already running. I want to launch a new firefox in safe-mode to test something without disrupting my existing firefox. Problem: I try to launch a new firefox in safe mode using `firefox --safe-mode`, but firefox just opens a new window NOT in safe mode. I think it may because firefox in safe-mode requires launching launching from a new instance rather than attaching to existing instance. `firefox --help` shows a flag I can use: --new-instance Open new instance, not a new window in running instance. --safe-mode Disables extensions and themes for this session. So I run `firefox --safe-mode --new-instance` now I get error popup with message: "Firefox is already running, but is not responding. To use Firefox, you must first close the existing Firefox process, restart your device, or use a different profile." Now I think what is the point of the flag "new-instance" if Firefox doesn't support multiple instances? Regardless, how can I launch firefox in safe-mode without disrupting my existing firefox instance and without relying on creating a profile just for this?

All Replies (1)

cor-el
cor-el
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  • Top 10 Contributor
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You probably need to specify a different profile folder that you want to use to test Safe Mode via the -P parameter, you may have to add the -no-remote parameter.

firefox --safe-mode -P test-safemode