Invite external user to access the administration portal
Sometimes, it is necessary to register an external user in the administration portal to help manage the environment. However, even after registration, they cannot access the portal. This happens because the user was not found in your tenant.
To resolve this issue, simply invite the user. Follow the steps below:
Access the card below:
On this screen, click "+ New User" and select "Invite external user" to invite an external user.

On this screen, enter the email and name of the external user, then click "Review + Invite". On this screen, click "+ New User" and select "Invite external user" to invite an external user.

After this process, the user will receive an email, as shown in the image below, and they simply need to accept the invitation.

Finally, register this user in the Administration Portal, allowing them to access the portal without issues. If the user is already registered, they can simply try to access it.
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