re: Is there a password manager that allows mass or bulk password changes?

I use LastPass on all my browsers and phones. Uses a master password, can turn on Authenticator on your phone(google authenticator app). Can have SMS protect etc. Works great and I love it. It has helped me many times after I setup a new PC and need to get back into all my website and programs to install/setup new PC. Plus it lets me use very complicated random passwords for important things like my banking so it won't be guessed by someone. There's a free and paid plan depending how you want to use it. I have done fine with the free version for years now.

https://www.lastpass.com/