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.

Rohkem teavet

Teema arhiveeriti. Please ask a new question if you need help.

Two versions of Firefox wont open at the same time

tmengland
tmengland
more options

I have two versions of Firefox installed on my PC, i use the ESR version everday and I would like to also use the new Firefox Quantum.

I have done a custom install and got them both on my PC, and when I click on Quantum it opens, and the same with ESR, but when i have one or the other already open the new window opens in the one that is open, so if i have Quantum open and click on ESR, it opens in Quantum and the same the reverse when ESR is open and I click on Quantum.

Is there any way around this bug?

I have two versions of Firefox installed on my PC, i use the ESR version everday and I would like to also use the new Firefox Quantum. I have done a custom install and got them both on my PC, and when I click on Quantum it opens, and the same with ESR, but when i have one or the other already open the new window opens in the one that is open, so if i have Quantum open and click on ESR, it opens in Quantum and the same the reverse when ESR is open and I click on Quantum. Is there any way around this bug?

All Replies (1)

GµårÐïåñ
GµårÐïåñ
more options

It is not really a bug. You can set your launch icon to add a -p and that way the profile selector shows up and you can choose which one to load. Otherwise, they will both just launch the default profile which can be shared across any number of installs.

Additionally, if you want to run BOTH versions at the same time, ESR won't allow it, but you can run it first and then tweak the launch icon for Q to add -p -no-remote and that will allow you to open that while the other is open too. Just be careful that you are not loading the same profile in both, that can get messy quick. Use at your own risk.

Let us know if that works for you.