Microsoft Security | Microsoft Entra | Microsoft Entra External ID
Managing external identities to enable secure access for partners, customers, and other non-employees
User invitation failed due to Insufficient privileges to complete the operation
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Karim Atef
0
Reputation points
User invitation failed due to Insufficient privileges to complete the operation. However I am global administrator while API response is Invitations are blocked for this directory due to suspicious activity
Microsoft Security | Microsoft Entra | Microsoft Entra External ID
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(201.6, 99%, 29%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ER%3C/text%3E%3C/svg%3E)
Rukmini 41,995 Reputation points Microsoft External Staff Moderator2026-05-21T10:24:20.29+00:00 Hello Karim Atef
Please check private messages so that we can assist you further!
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(153.6, 7.000000000000001%, 24%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EC3%3C/text%3E%3C/svg%3E)
Carolyne-3676 1,136 Reputation points2026-06-04T07:41:41.8466667+00:00 I believe this error "Invitations are blocked for this directory due to suspicious activity" is a tenant-level safety lock applied by Microsoft that overrides even Global Admin permissions — it's triggered when unusual invitation patterns are detected. To unblock this, open a support request through the Azure portal (Support + troubleshooting → Technical → Microsoft Entra ID → Users → Invite guest user) and ask Microsoft to review and lift the tenant restriction. While waiting, review your recent invitation activity and conditional access policies to ensure no compromised account was mass-inviting external users.
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