Don't let these steps intimidate you, the process is simple and takes approximately 2 minutes.
If you are signing in on a device that isn't yours... like a shared kiosk, open Edge/Chrome and press Ctrl+Shift+N in Windows 10 to open an incognito window to prevent caching your login information.
Also, don't forget to close the browser when you're done performing the steps below.
If you are unable to get logged into the security info page, email email@example.com so that we can assist you.
Download Microsoft Authenticator to your phone
From your device's App Store/Play Store, install the app: Microsoft Authenticator. The first time you open the app, agree to the terms and conditions, allow the use of the Camera, and choose the option to scan a barcode. Proceed to "Setting up the app" below.
You should already have the Microsoft Authenticator app installed. If not, we can re-push it to you and you will be prompted to sign in with your Apple ID.
Setting up the app
Click to open your ID's security info page: https://mysignins.microsoft.com/security-info
Note: When setting up your Authenticator app, on your phone you will be prompted to allow the camera, scan a QR code, and if prompted choose to allow notifications as well.
First, delete all existing Authenticator app(s) listed, and then click + Add method
From this point forward, keep clicking the blue buttons, and follow the steps it tells you to perform.
On your phone, open the Microsoft Authenticator app, tap "I agree"
Choose the option to scan a QR code (allow the camera). If you don't see the QR option, choose Work or school account and then choose to Scan a QR code.
After you scan the QR code, proceed with the blue buttons on your PC screen.
Last but not least, check that your default sign-in method app shows "Microsoft Authenticator - notification" as shown highlighted below:
That's all there is to it. You can now remove the old LastPass Authenticator app since it has just been replaced. But make sure your work Microsoft account is the only one in the old app. Don't delete the app if you have other personal accounts to migrate to the Microsoft Authenticator app.
Optional backup feature
If you decide to use the Authenticator app to protect your personal accounts as well, be sure you backup your codes. We cannot help you get into personal accounts you are locked out of. Go into the app menu at the top left and choose Settings. This function requires a personal Microsoft account which can be created here: https://account.microsoft.com/