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Entra External ID: email one-time passcodes no longer delivered for any user (tenant-wide), including "Run user flow"

Problem: In our Microsoft Entra External ID (external) tenant, no email one-time passcode is delivered any more. Users see that a code was sent, but no email arrives. This affects every address we tried (a Microsoft 365 work address, Hotmail, Gmail) and…

Microsoft Security | Microsoft Entra | Microsoft Entra External ID
asked 2026-11-12T20:00:59.6833333+00:00
Evgueni Loukipoudis 0 Reputation points
commented 2026-11-12T21:59:56.8866667+00:00
Trebor 0 Reputation points
1 answer

MFA emails ADb2c not working

Azure ADb2C not sending MFA emails since around 2PM. Was working this morning.

Microsoft Security | Microsoft Entra | Microsoft Entra External ID
asked 2026-10-29T15:56:29.8066667+00:00
Deepthi Sundaram 5 Reputation points
commented 2026-11-12T20:24:12.26+00:00
Mike Dooney 0 Reputation points
1 answer

Are invited guests signing in to apps in an external tenant supported or planned now that guest invitations are in preview?

I have setup an application via my companies main workforce tenant. I have added several External ID tenants (a development tenant and a production tenant) for managing user access with the application's different environments. The External ID tenants…

Microsoft Security | Microsoft Entra | Microsoft Entra External ID
asked 2026-11-11T18:12:49.5566667+00:00
Justin Horned 0 Reputation points
answered 2026-11-11T18:14:15.4866667+00:00

AI answer

0 answers

Microsoft Entra ID bloqueou convites de usuários externos devido a atividades suspeitas

Olá, comunidade Microsoft. Estamos enfrentando um problema no Microsoft 365 ao tentar convidar usuários externos (Guest Users) para acessar os recursos da nossa organização. Ao realizar um convite pelo Microsoft Entra ID, recebemos a seguinte…

Microsoft Security | Microsoft Entra | Microsoft Entra External ID
asked 2026-11-10T18:03:29.01+00:00
Gabriel Celada 0 Reputation points
0 answers

Setting a Theme on an Application breaks the Localization on the Userflow

We have multiple Custom Branding Themes for our different Entra Applications. On our User Flow we have a couple of labels overridden. The language overrides in the Userflow work, as long as the Application that I start the Userflow in has no Theme…

Microsoft Security | Microsoft Entra | Microsoft Entra External ID
asked 2026-11-10T14:06:21.51+00:00
Elias-K 0 Reputation points
0 answers

Personal account blocked from Azure portal: AADSTS500571 "guest user account is disabled" in a tenant I don't control

My personal Microsoft account (Hotmail) works normally for Outlook.com and Microsoft 365, but I can't sign in to the Azure portal. What happened: On Nov 8, 2026 (around 11 PM to midnight Eastern), I started an Azure free account signup with this…

Microsoft Security | Microsoft Entra | Microsoft Entra External ID
asked 2026-11-10T04:34:23.7633333+00:00
Rimo47 0 Reputation points
1 answer

AADSTS40015 rejecting a successful federated sign-in from a custom OIDC provider (Signicat/MitID)

We have a custom OIDC identity provider configured in Microsoft Entra External ID (CIAM tenant) for a broker (Signicat, federating MitID). The federation flow completes successfully on the broker side - confirmed via Signicat's own audit logs, which show…

Microsoft Security | Microsoft Entra | Microsoft Entra External ID
asked 2026-11-09T19:27:34.7733333+00:00
Muhammad Wasim Rashid 20 Reputation points
answered 2026-11-09T21:15:14.6466667+00:00

AI answer

2 answers

Azure Entra | for external user login Missing upn from the token

we have external user login via OpenText. upon successfull login, we see that the attribute "UPN" is missing from the bearer token. though we have added the UPN under optional claim access. kindly please help

Microsoft Security | Microsoft Entra | Microsoft Entra External ID
asked 2026-11-09T19:51:31.67+00:00
answered 2026-11-09T20:02:34.01+00:00
0 answers

Guest invites getting blocked for example.com email

I was trying to figure out the permissions required to do guest invites with sample flows. I created an application credential with User.Invite.All , and with this when i tried creating a guest invite for guest@example.com. It kept failing saying Guest…

Microsoft Security | Microsoft Entra | Microsoft Entra External ID
asked 2026-11-09T10:47:06.1933333+00:00
Harish Ganesan 0 Reputation points
0 answers

I can't invite external users anymore. Can you tell me how to fix this?

I sent bulk invitation emails via Azure Entra ID to our department members to log in to the chat app we built on Azure, but for some users in the middle of the list, it got blocked with the message 'Invitations are blocked for this directory due to…

Microsoft Security | Microsoft Entra | Microsoft Entra External ID
asked 2026-11-09T04:10:25.1533333+00:00
金光一 0 Reputation points
1 answer One of the answers was accepted by the question author.

Global Admin cannot invite guest users – “Insufficient privileges”

I am a Global Administrator in our Microsoft Entra tenant. All guest invitations are failing with the message: “User invitation failed. Insufficient privileges to complete the operation.” This occurs for all users and all invite methods. This started…

Microsoft Security | Microsoft Entra | Microsoft Entra External ID
asked 2026-05-07T19:24:23+00:00
ImmersiveEventNewbie 30 Reputation points
commented 2026-11-08T21:08:16.64+00:00
JuliaMarvin 24,175 Reputation points Volunteer Moderator
0 answers

"User invitation failed. Insufficient privileges to complete the operation" - Error

Good day! My Microsoft 365 Business Basic tenant is still unable to invite new external guests, despite several days of troubleshooting and escalation. I have found two Microsoft Learn Q&A cases describing the same error and…

Microsoft Security | Microsoft Entra | Microsoft Entra External ID
asked 2026-11-08T19:19:32.7566667+00:00
Ayan Scratuglia 0 Reputation points
edited the question 2026-11-08T19:28:20.0766667+00:00
Jack-Bu 7,310 Reputation points Microsoft External Staff Moderator
2 answers

External ID customer email-OTP sign-in: Authenticator TOTP enabled, but no MFA enrollment offered

In a Microsoft Entra External ID external customer tenant, an existing application's user flow uses Email One Time Passcode. An app-only Conditional Access policy requires MFA for all users. Microsoft Authenticator is enabled for all users, with Allow…

Microsoft Security | Microsoft Entra | Microsoft Entra External ID
asked 2026-11-05T05:34:02.1066667+00:00
answered 2026-11-08T03:30:44.96+00:00
Michelle Nguyen 2,860 Reputation points Independent Advisor
0 answers

Entra External ID free trial returns HTTP 404 in Belgium

Aanvulling: op 6 november 2026 om 13:27 Belgische tijd (12:27 UTC) heb ik de gratis External ID-proef opnieuw geprobeerd via de officiële VS Code-uitbreiding (versie 1.0.10), met mijn persoonlijke Microsoft-account en België als locatie. De naamcontrole…

Microsoft Security | Microsoft Entra | Microsoft Entra External ID
asked 2026-11-06T12:36:32.84+00:00
Richard verschoor 0 Reputation points
1 answer

External ID free-trial tenant provisioning returns HTTP 404 — how to verify tenant status?

I'm attempting to create my first Microsoft Entra External ID customer tenant using the official Visual Studio Code extension, with a personal Microsoft account and no Azure subscription. On 2026-11-06 at 09:02:49 UTC, extension ms-azuretools.ms-entra…

Microsoft Security | Microsoft Entra | Microsoft Entra External ID
asked 2026-11-06T09:55:01.71+00:00
Mapo Platform 0 Reputation points
answered 2026-11-06T09:56:12.4433333+00:00

AI answer

0 answers

How to extend session lifetime beyond 24 hours in Microsoft Entra External ID (CIAM) to prevent daily automatic logouts?

Details: I'm using Microsoft Entra External ID (ciamlogin.com) for customer authentication in my SPA application, and users are automatically logged out every 24 hours. I need to extend the session lifetime to keep users signed in for longer periods…

Microsoft Security | Microsoft Entra | Microsoft Entra External ID
asked 2025-10-21T11:42:55.8866667+00:00
Vivaan Rajput 0 Reputation points
commented 2026-11-06T01:11:29.5666667+00:00
Joshua Fellingham 0 Reputation points
0 answers

Entra External ID free trial returns HTTP 404 in Belgium

Ik wil voor VDestination één gratis Microsoft Entra External ID-proefomgeving aanmaken met een persoonlijk Microsoft-account, zonder Azure-abonnement. Ik heb België gekozen, met gegevensopslag in Europa. Op 5 november 2026 omstreeks 16:04 UTC kreeg de…

Microsoft Security | Microsoft Entra | Microsoft Entra External ID
asked 2026-11-05T16:21:44.24+00:00
Richard verschoor 0 Reputation points
2 answers

Unable to login to Microsoft Learn - Please help

Hi All, I usually log in to Microsoft Learn using my Google account. Earlier today, I was studying without any issues, but when I switched to another device, I encountered a problem. When I try to log in, I receive the following message: “We couldn't…

Microsoft Security | Microsoft Entra | Microsoft Entra External ID
asked 2026-01-02T20:41:44.3+00:00
Gaspar Joao 5 Reputation points
commented 2026-11-05T12:34:22.5266667+00:00
Don Varnau 19,945 Reputation points Volunteer Moderator
0 answers

Invitations are blocked for this directory due to suspicious activity – 2 of 12 student guests failed

I am the author of this question. Please delete it, as the issue is now being handled through an official Microsoft support request.

Microsoft Security | Microsoft Entra | Microsoft Entra External ID
asked 2026-11-04T04:45:10.3966667+00:00
Yukin 0 Reputation points
edited the question 2026-11-05T03:48:21.95+00:00
Yukin 0 Reputation points
0 answers

Sanitizing Default Error Messages in Entra External ID

I have Azure Front Door and Cloudflare set up with my Entra External ID tenant, and I call the endpoints directly using a configured custom domain, for example: https://custom.contoso.com/{tenant-id}/signup/v1.0/start For an invalid registration…

Microsoft Security | Microsoft Entra | Microsoft Entra External ID
asked 2026-11-04T16:37:36.66+00:00
Jinki Lee 100 Reputation points