ERROR Invitations are blocked for this directory due to suspicious activity. Please contact Microsoft support for help

Question

Hello,

 I’m trying  B2B invitations  script by PowerShell  + Graph API, but this error was occurred and could not set invitations.

same situation as below: 

 https://learn.microsoft.com/en-us/answers/questions/5832999/error-invitations-are-blocked-for-this-directory-d

 https://learn.microsoft.com/en-us/answers/questions/5827055/entra-id-b2b-guest-invitations-blocked-invitations

We need  many B2B invitations. ,cloud you unblock invitations  and  change limits ?

Regards,

Answer 1

Hello @Sudo,

I understand that you are experiencing an issue when inviting a guest user to your tenant, and the invitation is being blocked due to suspicious activity.

Based on the information provided, this appears to be a service-side restriction that has been applied by Microsoft for security reasons. Unfortunately, members of this community forum do not have access to the necessary backend tools or systems required to investigate, modify, or remove such restrictions.

Since resolving this issue requires verification and action from the Microsoft Support team, I recommend opening a support request with Microsoft Azure Support. Their engineers can review the affected tenant, determine the reason for the block, and, if appropriate, remove the restriction from the backend.

You can follow the official Microsoft documentation to create a support ticket: How to create an Azure support request - Azure portal | Microsoft Learn

If you have any further concern or update, please feel free to let me know.