Set up app tabs bi pining when firefox closes and is reopened app tabs have disappeared, Why
all the information i have is contained in one line. Set up app tabs close fire fox and then reopen. i do nothing between these 2 tasks. Did this 5 times and it still does not work
الحل المُختار
In case you are using "Clear history when Firefox closes":
- do not clear the "Browsing History"
- Tools > Options > Privacy > Firefox will: "Use custom settings for history" : [X] Clear history when Firefox closes > Settings
- https://support.mozilla.org/kb/Clear+Recent+History
Note that clearing "Site Preferences" clears all exceptions for cookies, images, pop-up windows, software installation, and passwords.
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الحل المُختار
In case you are using "Clear history when Firefox closes":
- do not clear the "Browsing History"
- Tools > Options > Privacy > Firefox will: "Use custom settings for history" : [X] Clear history when Firefox closes > Settings
- https://support.mozilla.org/kb/Clear+Recent+History
Note that clearing "Site Preferences" clears all exceptions for cookies, images, pop-up windows, software installation, and passwords.
as i stated in my original message i did nothing but set up the tabs close FF, reopen it and tabs are gone. History is set to clear in 24 hours. My operation took about 24 seconds
You can check for problems with the files sessionstore.js and sessionstore.bak in the Firefox Profile Folder that store session data.
Delete the sessionstore.js file and possible sessionstore-##.js files with a number and sessionstore.bak in the Firefox Profile Folder.
- Help > Troubleshooting Information > Profile Directory: Open Containing Folder
- http://kb.mozillazine.org/Profile_folder_-_Firefox
Deleting sessionstore.js will cause App Tabs and Tab Groups and open and closed (undo) tabs to get lost, so you will have to create them again (make a note or bookmark them).