Insufficient Privileges on inviting B2B guest

Question

Andras Hajas 0

Hi,
I am the Global Administrator and owner of my tenant.

I have lost access to invite guests in any way, not from portal nor with Graph Api.

I get: Insufficient Privileges at any request

Anyone has any idea, or is it required to pay 100 USD for support, to resolve an Azure side issue ?

Vasil Michev 128.7K Reputation points MVP Volunteer Moderator

2026-11-09T07:09:07.17+00:00

Can you share the exact error message? A common issue is the tenant being flagged for suspicions activity, but there can be other reasons too.
Andras Hajas 0 Reputation points

2026-11-09T07:44:08.36+00:00

Yes, it is the “suspicious activity” one, that you’ve mentioned, if I try a bulk operation.

(Graph api is 502 for some reason. Simple Add Guest is insufficient)
Vasil Michev 128.7K Reputation points MVP Volunteer Moderator

2026-11-09T08:01:43.3133333+00:00

Unfortunately, this will have to go through support. I will escalate the thread, but just in case, you might want to open a support request via the portal.
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1 answer

Vasil Michev 128.7K Reputation points MVP Volunteer Moderator

2026-11-09T07:09:07.17+00:00

Can you share the exact error message? A common issue is the tenant being flagged for suspicions activity, but there can be other reasons too.
Andras Hajas 0 Reputation points

2026-11-09T07:44:08.36+00:00

Yes, it is the “suspicious activity” one, that you’ve mentioned, if I try a bulk operation.

(Graph api is 502 for some reason. Simple Add Guest is insufficient)
Vasil Michev 128.7K Reputation points MVP Volunteer Moderator

2026-11-09T08:01:43.3133333+00:00

Unfortunately, this will have to go through support. I will escalate the thread, but just in case, you might want to open a support request via the portal.
Deleted

This comment has been deleted due to a violation of our Code of Conduct. The comment was manually reported or identified through automated detection before action was taken. Please refer to our Code of Conduct for more information.

Answer 1

Andras Hajas 0

Yeah, sadly support AI auto closes the request as a technical issue.

Nevermind, if this won’t be resolved in a few, I’ll have to buy a support package.. to keep B2B registrations working for our service.

Appreciate your help and input

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