Guests cannot change their username and password is not relevant in the resource tenant (credentials are managed in the "home" tenant). You can restrict them from performing other actions, seeing group membership, etc. Read here: https://learn.microsoft.com/en-us/azure/active-directory/enterprise-users/users-restrict-guest-permissions
how to restrict deafult guest user to edit his own profile on azure

Mark
21
Reputation points
Hi all, is there any possible to avoid my default guest user to edit his own profile like username , password etc...
or else i want to add user as guest that user can't edit his profile.
Accepted answer
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Vasil Michev 61,906 Reputation points Microsoft MVP
2021-04-13T14:19:18.503+00:00