# Logging On Using a Web Authenticator for Two-Factor Authentication

When two-factor authentication (which is a form of multi-factor authentication) is enabled, you can log on to the Command Center using a web authenticator such as Yubikey.

## Before You Begin

- Verify that the administrator has enabled two-factor authentication with or without usernameless and/or passwordless login.

- Verify that the web authenticator is added.

- Connect the authenticator to the USB port on your computer.

## Procedure for Two-Factor Authentication

1. Open the interface that you want to log on to.

   For example, go to the Command Center site.

2. In the User name box, enter your user name.

3. In the Password box, enter your password.

4. Click Login.

5. Follow the instructions for the authenticator type that appears on the screen.

## Example: Procedure for Two-Factor Authentication Using a Yubikey Authenticator

If you are using a Yubikey authenticator for two-factor authenticator, perform the following steps:

1. Go to the Command Center using the URL that your administrator provided.

2. Enter your CommCell account credentials, and then click Login.

3. If a prompt appears asking you to insert the Yubikey, connect the Yubikey to the USB port.

   If your Yubikey is not detected and a timeout occurs, disconnect the key from the USB port and connect it again.

4. Touch the Yubikey.

   If your Yubikey has a button or a gold disc, tap it.

## Example: Procedure for Passwordless Login and Using a Yubikey Authenticator

1. Go to the Command Center using the URL that your administrator provided.

2. Enter your CommCell account user name, and then click Login.

3. If a prompt appears asking you to insert the Yubikey, connect the Yubikey to the USB port.

   If your Yubikey is not detected and a timeout occurs, disconnect the key from the USB port and connect it again.

4. Touch the Yubikey.

   If your Yubikey has a button or a gold disc, tap it.

## Example: Procedure for Web Authenticator-only Login Using Only the Yubikey Authenticator

1. Go to the Command Center using the URL that your administrator provided.

2. Click Login using web authenticator.

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