Hello, Long-time Firefox user here. I'm running Firefox (version 75.0, auto-updates enabled) on a Windows 10 (Version 10.0.18362 Build 18362) desktop PC. I'm using the built-in Firefox password manager, although as a general practice I do not log into it using my master password unless absolutely needed (for example, to check my email or Slack). For the vast majority of the general browsing I do, I stay logged out of my accounts. This has worked just fine for years. However, lately Firefox keeps prompting me to enter my master password, and won't stop prompting me for my password while I'm browsing. Oftentimes I'll randomly receive the prompt, often on sites that should not be asking for a password, such as a blank New Tab or sites that don't have any associated data in my password manager. What's frustrating is that, when I close the prompt, Firefox will immediately re-prompt me again to enter my master password, despite me not wanting to log in (or on some sites, not having an account or even a login page). It will keep repeating this prompt incessantly, sometimes for 5-6 times before going away briefly, only to reoccur when I navigate to a new site. My browser is configured to be a bit more privacy-conscious, and I'm wondering if this may be causing this behavior. In Options > Privacy and Security, I've set Custom blocking for the following items: - Cookies (all third-party sites) - Tracking content (in all windows) - Cryptominers - Fingerprinters I have also set my browser to delete cookies and site data upon closure. I am using the following plugins, with auto-updates enabled: uBlock Origin HTTPS Everywhere Privacy Badger Decentraleyes Cookie Autodelete Firefox Mult-Account Containers Facebook Container I've searched the support forums for help on this topic and found the two articles below. However, after trying the offered solutions, neither fixed the underlying behavior. Also note that I am not using any third-party antivirus solutions, like ESET Internet Security and Avast, which have been known to cause similar issues with the Firefox password manager. Here are the articles I found: https://support.mozilla.org/en-US/kb/firefox-keeps-asking-me-master-password (I tried these steps and still had the same behavior happen) https://support.mozilla.org/en-US/questions/1176785 (this just disables the Password Manager, something I ideally would not have to do to stop this behavior) Can anyone provide any insight into why Firefox keeps doing this? I love Firefox but lately it's become a drag to use because of this. Thanks all.