Tenant guest invitations blocked

Question

Hi,

Whenever we try to invite external users when sharing a file/folder from Onedrive, we get the following error:

Error from Entra B2B: At least one invitation failed. Error: ResponseStatusNotOK, message: Invitations are blocked for this directory due to suspicious activity. Please contact Microsoft support for help.

Could you please assist with unblocking the tenant?

Answer 1

Hi @Lochlan Downie

Thank you for posting this in Microsoft Q&A.

We appreciate you contacting us offline and sharing your details over email.

I understand you are trying to invite guest users but getting error "Invitations are blocked for this directory due to suspicious activity. Please contact Microsoft support for help".

The issue you encountered was caused by attempting to invite bulk guest users. We addressed this by collaborating with our internal Product Group team, who have now unblocked your tenant. As you've mentioned, you can now access it successfully.

Hope this helps. Do let us know if you any further queries.

Thanks,

Navya

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