If you have enabled "Resist Fingerprinting", set this pref in about:config to false to disable this feature.

• privacy.resistFingerprinting => false
• https://support.mozilla.org/en-US/kb/about-config-editor-firefox
• https://support.mozilla.org/en-US/kb/firefox-protection-against-fingerprinting

Hello cor-el,

Thank you very much for your reply.

It's really interesting and makes me wonder if installing a VPN has anything to do with my problem. I recently installed Cyberghost and used it for a week (it is no longer installed). And if I remember correctly, I had identified "Resist Fingerprinting" in the "Privacy Guards" options package, Firefox tab ... I'll check these options in Firefox and let you know the results.

Kind regards

To my personal understanding, why are the "Resist Fingerprinting (RFP)" settings different between the "application settings" (top right menu in Firefox), and "about:config"?

Thanks again for your precious help, this did indeed solve my clock issue. I guess this option will be fix in a future update?

You can disable privacy.resistFingerprinting and instead use the new Enhanced Tracking Protection feature to block Known and Suspected fingerprinters (see Settings -> Privacy & Security). This feature is by default only enabled in PB mode, so you need to select all windows This pref should be set to true

• about:config => privacy.fingerprintingProtection -> true
• privacy.fingerprintingProtection.overrides -> +AllTargets,-JSDateTimeUTC

If you disable Tracking Protection for a site, then it will also disable fingerprinting protection.

(edited to remove a trailing dot)

I think Firefox configuration is correct now. One last question please, do I need the "." in "+AllTargets,-JSDateTimeUTC."

You need to leave out the appended dot, sorry about the confusion

No problem, I was good :p And thanks for all your effort

Take care