Try here.
https://account.activedirectory.windowsazure.com/r/#/profile

then additional security verification

Go to https://account.microsoft.com/security and click on Manage How I sign in. Then choose Add a new way to sign in or verify. This will give you the option of Use an App.

The next step may be titled "Set up the Microsoft Authenticator app", but don't let it put you put off. It includes a link you can click, to set up a different Authenticator app:

This will show you a QR code to scan, and then verify your code.

Hi,

To add your account to Microsoft Authenticator and approve requests, follow these steps:

Download and Install the App: If you haven't already, download and install the Microsoft Authenticator app from the App Store (iOS) or Google Play Store (Android).

Add Your Account:

• Open the Microsoft Authenticator app.
• Tap the + icon to add a new account.
• Select Work or school account or Personal account based on your needs.

Generate a QR Code:

• On your computer, go to the Microsoft account security page and sign in.
• Under Advanced security options, select Add a new way to sign in or verify.
• Choose Use an app and follow the prompts to generate a QR code. Scan the QR Code:
• In the Authenticator app, select Scan a QR code.
• Use your phone's camera to scan the QR code displayed on your computer screen.

Approve the Request:

• After scanning the QR code, your account will be added to the Authenticator app.
• When you sign in to your account, you will receive a notification in the Authenticator app to approve the sign-in request. Simply open the app and tap Approve[1][2].

If you encounter any issues, make sure your device's camera has permission to scan QR codes, or you can manually enter the code provided on the setup page[3].

Feel free to ask if you need further assistance! 😊

References

[1] I get asked to 'approve request' in Authenticator app when trying to ...

[2] Sign in using Microsoft Authenticator - Microsoft Support

[3] How to add your accounts to Microsoft Authenticator

After the way you tag questions on Q&A is updated, for any "Microsoft Configuration Manager" related problem, you can tag it with "Microsoft Intune", and then "Microsoft Configuration Manager" as the child tag.