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Why do all tabs from previous session open when I start a new session? How can I stop this? This just started happening with the Firefox update.

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  • Last reply by anitagram

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When I open Firefox, instead of opening a blank page as I specified in "options" all of the tabs from my previous session are opened one by one. This is certainly a privacy issue!

When I open Firefox, instead of opening a blank page as I specified in "options" all of the tabs from my previous session are opened one by one. This is certainly a privacy issue!

Chosen solution

You can check if you have a user.js file in the Firefox profile folder that sets the browser.sessionstore.resume_session_once pref to true.

Note that your System Detail list shows that you have a user.js file in the profile folder to initialize prefs each time Firefox starts. The user.js file will only be present if you or other software has created this file and normally won't be present.

You can check its content with a plain text editor (right-click: "Open with"; do not double-click). The user.js file is read each time Firefox is started and initializes preferences to the value specified in this file, so preferences set via user.js can only be changed temporarily for the current session.

You can delete the user.js file if you didn't create this file yourself.

You can use this button to go to the current Firefox profile folder:

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Chosen Solution

You can check if you have a user.js file in the Firefox profile folder that sets the browser.sessionstore.resume_session_once pref to true.

Note that your System Detail list shows that you have a user.js file in the profile folder to initialize prefs each time Firefox starts. The user.js file will only be present if you or other software has created this file and normally won't be present.

You can check its content with a plain text editor (right-click: "Open with"; do not double-click). The user.js file is read each time Firefox is started and initializes preferences to the value specified in this file, so preferences set via user.js can only be changed temporarily for the current session.

You can delete the user.js file if you didn't create this file yourself.

You can use this button to go to the current Firefox profile folder:

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I "tuned up" Firefox and the problem has resolved itself. Thank you.