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When Firefox Starts startup setting not honored

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vodoomoth
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When Firefox Starts startup setting not honored

Hi,
I am facing an inconvenience that I can't quite understand. I'm doing freelance job on a client's premises and using a computer that they assigned to me for the time that I'm spending there.

Since they have their rules regarding software installation, I can't install much and consequently, I can't upgrade their old version of FF, old enough to not have Sync^^. However, I could copy Firefox portable to a folder on the disk and run it from there.

I have set the "When Firefox Starts" option to "Show my windows and tabs from last time". My problem is that every two runs, that option reverts to "Show my home page". I am using Tab Mix Plus and this is probably the add-on without which I can't use FF. I had to disable its session manager because it just does not work; I am using FF's native session restore feature. I have no use of any option other than full session restore.

I have the feeling that session restore option is being reset but I can't figure out how, nor why. I understand that disk writes may have been cut down to the strict minimum required for the app to be functional, but I didn't read that this would prevent customization or loss of settings.

Can anyone help? I would like my settings to persist throughout browsing sessions. Thanks.

John T. Haller
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Cache

Tab Mix Plus may be interfering because Firefox's cache is disabled. You can re-enable it in Options - Advanced - Network. You could also try it without TMP. While the extension was very popular when Firefox's tab handing was in its infancy for things like undo close, close others, re-order, etc, once Firefox had all those abilities, it became much less popular and would often have issues as newer versions of Firefox came out.

Sometimes, the impossible can become possible, if you're awesome!

vodoomoth
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Thank you. I have tried FF

Thank you. I have tried FF without TMP and it's a no-go for me. I'll endure this until my contract with this client is over. Thx.

vodoomoth
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Problem solved.

I have solved the problem by creating a 'user.js' file in Data\profile. It sets the relevant preference (below) to my desired value.

By having the Firefox preferences file (prefs.js in Data\profile) open in a text editor, I had been able to determine that

user_pref("browser.startup.page", 3);

was being removed from the file. The culprit was indeed Tab Mix Plus as once this extension is disabled, the removal no longer occurred.

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