When you set up an account, you need to give it a password. When using a password manager, you can use unique and incredibly long and complex passwords for each site. This is obviously very secure, as these passwords will be essentially impossible to ever guess.
You may be tempted to set your password manager master password to be something pretty long and complicated too. Realistically, you only have to remember a couple of passwords now, one to access your device and one to access your password manager. As you may need to regularly type your master password, this can get quite time-consuming and annoying. As such, you may want to set your password to something more manageable.
Similarly, if you set your master password to something easy to remember, you may be concerned that it’s too easy to guess and that your password vault could be vulnerable to hackers. In this case, you might want to change your master password to something longer and more secure.
How to Change Your Bitwarden Master Password
To change your Bitwarden master password, you need to be signed into the Bitwarden web vault. Once you’re signed in, switch to the “Settings” tab, then scroll down in the default “My account” page to the “Change master password” section. Here, enter your current master password, then enter the new master password you want to use twice.
Before you click the “Change master password” button, ensure that the checkbox labeled “Also rotate my account’s encryption key” is not ticked. Enabling this option can result in your entire vault becoming corrupted and unrecoverable if you don’t understand what it does and what you need to do to avoid this. You can read our guide here if you want to learn how to do that safely.

Your Bitwarden master password is the key to unlock access to your password vault. It’s important that you can remember and type it, but it also needs to be secure. By following the steps in this guide, you can change your Bitwarden master password.
Bob Baxter says
NO. I changed my password last night and now it does not work. I need a temp pw to login. or something!