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Cannot unmark "Delete cookies and site data when Firefox is closed"

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  • 1 has this problem
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  • Last reply by cor-el

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Dear all,

I cannot unmark the setting "Delete cookies and site data when Firefox is closed". It is annyoing to enter each time all accounts if I want to go to facebook for example, after firefox is restarted.

Firefox will remember history is set. I don´t think i am using privacy mode.

kind regards,

Dear all, I cannot unmark the setting "Delete cookies and site data when Firefox is closed". It is annyoing to enter each time all accounts if I want to go to facebook for example, after firefox is restarted. Firefox will remember history is set. I don´t think i am using privacy mode. kind regards,
Attached screenshots

Chosen solution

You may be in Private Browsing mode or told Firefox not to remember.

Type about:preferences#privacy<enter> in the address bar. The button next to History, select Use Custom Settings.

Turn off Always Use Private Browsing Mode Turn on Remember My Browsing And Download History At the bottom of the page, turn on Clear History When Firefox Closes. At the far right, press the Settings button. Turn on ONLY Cache and Form And Search History leaving the others off.


Macs: Make sure you install Firefox properly and that you do not run Firefox from within the DMG (Disk Images) file. https://support.mozilla.org/en-US/kb/how-download-and-install-firefox-mac

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https://support.mozilla.org/en-US/kb/how-to-fix-preferences-wont-save

Note: Some software, like Advanced SystemCare with Surfing Protection, can protect files in the Firefox profile folder against changes. If you have such software then check the settings or uninstall this software.


Macs: Make sure you install Firefox properly and that you do not run Firefox from within the DMG (Disk Images) file. https://support.mozilla.org/en-US/kb/how-download-and-install-firefox-mac

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Chosen Solution

You may be in Private Browsing mode or told Firefox not to remember.

Type about:preferences#privacy<enter> in the address bar. The button next to History, select Use Custom Settings.

Turn off Always Use Private Browsing Mode Turn on Remember My Browsing And Download History At the bottom of the page, turn on Clear History When Firefox Closes. At the far right, press the Settings button. Turn on ONLY Cache and Form And Search History leaving the others off.


Macs: Make sure you install Firefox properly and that you do not run Firefox from within the DMG (Disk Images) file. https://support.mozilla.org/en-US/kb/how-download-and-install-firefox-mac

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In case you use "Clear history when Firefox closes".

  • do not clear the Cookies
  • do not clear the Site Preferences

  • clearing "Site Preferences" clears exceptions for cookies, images, pop-up windows, and software installation and exceptions for passwords and other website specific data
  • clearing "Cookies" will remove all cookies including cookies with an allow exception you may want to keep