Type about:preferences#privacy<enter> in the address bar. Near the top of the page, select Standard.

Does this work?

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

Note that Options has been renamed to Settings, so you need to look for this label.

• https://support.mozilla.org/en-US/kb/firefox-Options-preferences-and-settings

You can check the about:policies page (63+) to see if policies are active and if errors are reported.

• https://support.mozilla.org/en-US/kb/see-active-policies-firefox-enterprise

I figured out the CORRECT answer ... In Firefox, open menu (3 horizontal lines at top right) Select SETTINGS Select PRIVACY AND SECURITY Scroll down to HISTORY ( !!! not cookies and site data !!! ) Under "Firefox will" item, select USE CUSTOM SETTINGS from drop down menu Uncheck [ ] ALWAYS USE PRIVATE MODE

Additionally, delete any shortcut that was always opening Firefox in private mode. Replace with a new (not corrupted) shortcut.

This corrects the problem of having to sign into sites every time you access them.

That was very good work. Well Done.