This not an interface problem. I used the GRC site to check if cookies are saved.

have a look at this support article - especially the part about norton software & user.js file in your profile

Thank you. I erased a prefs.1.js Now I have a prefs.js and a user.js and both files are not write protected. In neither file could I find a setting related to allowing cookies.

I ran another test then. I removed lines with settings from uninstalled extensions, saved prefs.ini and started FF. And guess what? the removed lines were back!

How strange is that?

all the cookie related settings should start with network.cookie... in case you haven't created the user.js file yourself in the first place, you can likely remove it (or just rename it).

I find the network.cookie settings in the prefs.js. I removed prefs.js and restarted FF. I lost all my settings obviously. Then I set the cookie preferences again and restarted FF. The cookie preferences were gone again!!!

Any ideas?

it's the user.js file that is overriding the settings - have you already tried deleting that one?

my user.js only contains these lines: user_pref("network.http.max-persistent-connections-per-server", 4); user_pref("nglayout.initialpaint.delay", 600); user_pref("content.notify.interval", 600000); user_pref("content.max.tokenizing.time", 1800000); user_pref("content.switch.threshold", 600000); user_pref("network.http.pipelining", true); user_pref("network.http.proxy.pipelining", true); user_pref("network.http.pipelining.ssl", true); user_pref("network.http.pipelining.maxrequests", 8); user_pref("network.http.max-connections-per-server", 8);

How can any of this overwrite my cookie settings?

oh, btw, I don't have Norton.

Start Firefox in Use Troubleshoot Mode in Firefox to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance/Themes).

• Don't make any changes on the Safe mode start window.
• https://support.mozilla.org/kb/Safe+Mode

• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

Some security software has virtualization features that can cause problems by protecting and restoring files in the Firefox profile folder, so check for that as well.