85,546 questions with Microsoft Security-related tags

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Microsoft Authenticator not showing verification code

Problem Description I am unable to receive or view the verification code in the Microsoft Authenticator app. The account is added to the app, but no authentication code is displayed, preventing me from signing in to my Microsoft account. I have already…

Microsoft Security | Microsoft Authenticator
asked 2026-07-19T07:46:27.22+00:00
Abhi Kumar 0 Reputation points
answered 2026-07-19T07:46:49.11+00:00

AI answer

1 answer

SMS Authentication Failure (Error 399287) Preventing Admin Sign-In

I am trying to sign in to an administrator account that I own, but the SMS verification method is no longer working. When I select phone verification for my tenant directory, I am prompted to verify my identity via SMS. However, as soon as I click the…

Microsoft Security | Microsoft Entra | Microsoft Entra ID
asked 2026-07-18T08:02:58.4366667+00:00
Mojo AI 0 Reputation points
edited the question 2026-07-19T07:25:01.01+00:00
Rin-L 22,965 Reputation points Microsoft External Staff Moderator
0 answers

Remove Endpoint from Defender

How we can delete endpoint from Asset - Device on Microsoft Defender portal? If I delete the device from Entra then the devices will be removed also from Defender portal?

Microsoft Security | Microsoft Defender | Other
asked 2026-07-19T05:41:13.0166667+00:00
Handian Sudianto 7,341 Reputation points
0 answers

hi im receiving authenticator messages saying was that you

Hi i have several devices with outlook accounts but generally use one at a time but mostly my mobile and the other devices are off or asleep also to my knoweledge only my mobile has the authenticator app on my mobile i get a notification asking if that…

Microsoft Security | Microsoft Authenticator
asked 2026-07-19T05:27:32.8333333+00:00
robert mendonca 0 Reputation points
0 answers

Phone Factory reset had made authentication impossible

Hi so my phone recently had a SIM card issue that resulted in it being factory reset and still unusable for a while till just last week. I do plan on getting a new phone soon within days, and so with that said I'm having a problem verifying my current…

Microsoft Security | Microsoft Authenticator
asked 2026-07-19T04:28:15.87+00:00
Victoria Pratt 0 Reputation points
edited the question 2026-07-19T04:29:50.9166667+00:00
Victoria Pratt 0 Reputation points
2 answers

How to get help with unusual sign-in attempts

How do I get help with unusual sign-in attempts. I use the microsoft authenticator app and I have changed my password. But the attempts continue. None of my other accounts are being affected. The unauthorized attempts are originating from Mexico,…

Microsoft Security | Microsoft Authenticator
asked 2026-07-14T14:02:36.3633333+00:00
Gregory Weires 0 Reputation points
commented 2026-07-19T03:52:45.1+00:00
Gregory Weires 0 Reputation points
0 answers

Me robaron mi cuenta de Microsoft hace 2 años y sigo sin poder recuperarla pese a tener pruebas

Hola. Hace aproximadamente dos años me robaron mi cuenta de Microsoft. Supongo que consiguieron adivinar o comprometer mi contraseña y, una vez dentro, cambiaron el correo de recuperación, el número de teléfono y toda la información de seguridad,…

Microsoft Security | Microsoft Entra | Other
asked 2026-07-19T03:20:48.0133333+00:00
Javier Marrero Martín 0 Reputation points
0 answers

Unable to access Azure tenant – Authenticator asks for 6-digit code but my personal Microsoft account only generates 8-digit codes

Hello, I am unable to access Azure / Microsoft Entra using my personal Microsoft account: ******@live.com. When I try to access the Azure portal or switch tenants, Microsoft Entra requires a 6-digit verification code from Microsoft…

Microsoft Security | Microsoft Entra | Microsoft Entra ID
asked 2026-07-19T01:53:52.7866667+00:00
Enrykez 75 Reputation points
1 answer

Unable to sign into Microsoft account

I am unable to sign into microsoft account, i need help. Its not recongising my mobile number. When i enter my mobile number it asks to choose other options to verify. The gives me no options

Microsoft Security | Microsoft Authenticator
asked 2026-07-19T01:40:12.1366667+00:00
carley alexandropoulos 0 Reputation points
answered 2026-07-19T01:40:27.69+00:00

AI answer

0 answers

Fraudulent charges on my Microsoft account

There have been 4 fraudulent charges against my account. Someone hacked my account and changed my address, billing, etc. to his name. I have since changed it back to my info and changed my password. Three of the charges were made after I did this.  His…

Microsoft Security | Microsoft Sentinel
asked 2026-07-15T14:45:52.4466667+00:00
DuaneLunday-2176 0 Reputation points
commented 2026-07-19T01:00:28.03+00:00
DuaneLunday-2176 0 Reputation points
1 answer One of the answers was accepted by the question author.

Sensitivity labels not showing in "Sensitive info types" when creating a custom policy in Purview DLP

Sensitivity labels not showing in "Sensitive info types" when creating a custom policy in Purview DLP. Sensitivity labels have been set-up and published, and they appear in apps such as Word.

Microsoft Security | Microsoft Purview
asked 2026-07-18T01:03:33.3033333+00:00
Mark G Lomas 20 Reputation points
commented 2026-07-19T00:39:26.4733333+00:00
Mark G Lomas 20 Reputation points
1 answer

PLease help me fix this error which i have received and has disabled my mail from being delivered. I have logged into Defender but am unable to understand if i have resolved the problem.

Diagnostic information for administrators: Generating server: AS8PR01MB7672.eurprd01.prod.exchangelabs.com [******@gmail.com] Remote server returned '550 5.1.8 Access denied, bad outbound sender AS(42004)' Original message headers: Received: from…

Microsoft Security | Microsoft Defender | Microsoft Defender for Office 365
asked 2026-07-15T10:20:15.35+00:00
Sam Laite 0 Reputation points
answered 2026-07-18T23:45:17.0133333+00:00
Dilawar Shaikh 0 Reputation points
0 answers

Azure connect service crashed

Hello, The service windows ADsync won't start again. The Ad connect version is 2.6.3 and it is installed on a windows serveur 2022. Here is the log through the event log : "Nom du journal:Application Source: ADSync Date: 15/07/2026…

Microsoft Security | Microsoft Entra | Other
asked 2026-07-16T09:32:45.7133333+00:00
BALLET E 0 Reputation points
2 answers

MFA enrollment wizard loops indefinitely — personal MSA admin locked out of Entra external tenant

I'm the only admin of a Microsoft Entra External ID tenant, signing in with a personal Microsoft account (gmail). Since this week, every sign-in to entra.microsoft.com or portal.azure.com shows "Let's keep your account secure" — clicking Next…

Microsoft Security | Microsoft Entra | Microsoft Entra External ID
asked 2026-07-18T04:55:10.1466667+00:00
Jonathan Bush 0 Reputation points
answered 2026-07-18T23:17:58.6633333+00:00
Dilawar Shaikh 0 Reputation points
2 answers

Microsoft Azure, Horrendous support and blocking development of applications

I am a former intern of NBCUniversal. Currently, NBC has my email as a guest account linked to azure. Neither NBC nor Azure will delete my account from the organization so I can develop applications. This is yet another example of Microsoft being an…

Microsoft Security | Microsoft Entra | Microsoft Entra ID
asked 2026-05-31T01:06:52.48+00:00
user6048 0 Reputation points
commented 2026-07-18T21:51:24.1966667+00:00
user6048 0 Reputation points
1 answer One of the answers was accepted by the question author.

Understanding the difference between Microsoft Entra ID roles and Azure RBAC roles for access control

I am currently learning about Microsoft Entra ID and Azure security concepts, and I am trying to understand how identity-based access control differs from resource-based access control. From my understanding, Microsoft Entra ID roles are mainly used to…

Microsoft Security | Microsoft Entra | Microsoft Entra ID
asked 2026-07-18T20:34:58.0533333+00:00
Alvin Bernasko 0 Reputation points
accepted 2026-07-18T20:38:05.6933333+00:00
Alvin Bernasko 0 Reputation points
0 answers

two factor authentication / app issue / work email / Auth. App doesnt receive code

My work account requires two-factor authentication (2FA), which I have enabled on the Microsoft Authenticator app. However, when I attempt to sign in, the system prompts me to enter a code from the app. Unfortunately, the app does not display any code,…

Microsoft Security | Microsoft Authenticator
asked 2024-09-19T11:01:45.1666667+00:00
Hemo Najem 5 Reputation points
commented 2026-07-18T18:34:46.8033333+00:00
Christian Gonzalez 0 Reputation points
0 answers

Bookings API: POST /appointments returns HTTP 500 UnknownError with empty message (application permissions)

Subject: Graph API — POST /solutions/bookingBusinesses/{id}/appointments returns HTTP 500 UnknownError with empty message Hi, We are building a custom booking flow against the Microsoft Bookings Graph API using application permissions (client…

Microsoft Security | Microsoft Graph
asked 2026-07-18T17:41:09.3066667+00:00
Kayahan Yilmaz 0 Reputation points
2 answers One of the answers was accepted by the question author.

You cannot set up paswordless phone sign-in because your IT admin has disabled this feature

I have followed this kb https://learn.microsoft.com/en-us/azure/active-directory/authentication/howto-authentication-passwordless-phone to enable passwordless "phone" sign-in and it worked for me. When I tried to enable phone sign-in in my…

Microsoft Security | Microsoft Entra | Microsoft Entra ID
asked 2023-03-08T22:47:02.5733333+00:00
Calvin Goodman 86 Reputation points
commented 2026-07-18T17:14:49.1+00:00
Reuben MPH Harrison 0 Reputation points
1 answer

Can't Purchase P2

We are attempting to purchase Microsoft Entra ID P2 licenses for a new Azure Government tenant, but the transaction continues to fail. We are purchasing directly through Microsoft and are not currently working through a CSP. The tenant currently has…

Microsoft Security | Microsoft Entra | Other
asked 2026-07-17T16:57:06.71+00:00
Fiona Blake 0 Reputation points
answered 2026-07-18T15:40:52.6533333+00:00
Dilawar Shaikh 0 Reputation points