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MFA is a two-step process. You will log in to the client portal as normal, and then required to enter a one-time password. This password is generated by a mobile application authenticator. These can be downloaded via app stores, the most common ones are google authenticator and microsoft authenticator. When you go into your app, you will be given a one-time password (which is time sensitive) to enter into on the client portal login screen. This adds an additional layer of security to your data and login details, based on a password that only you know, and a one-time password on a device that only you have.
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If you lose or change your mobile device, or have had to reinstall the authenticator application, you may need to have your MFA reset for the client portal. Please speak to your payroll representative, to reset this for you. Once reset, you will follow the steps as above as a first-time user.