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Error 399287 – Sole Global Admin locked out, SMS MFA blocked

Hello Microsoft Support Team, I am unable to access my Microsoft Entra ID tenant because SMS multi-factor authentication is blocked. Tenant: vitebsk.onmicrosoft.com Affected account: ******@vitebsk.onmicrosoft.com Error Code: 399287 Phone country code:…

Microsoft Security | Microsoft Entra | Microsoft Entra ID
asked 2026-10-27T14:34:42.8266667+00:00
Andrei Hnidzenka 0 Reputation points
answered 2026-10-27T14:35:53.4766667+00:00

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0 answers

Microsoft Entra External ID custom URL domain: esctx cookies accumulate and cause HTTP 431 on a subdomain

We use a custom URL domain for our Entra External ID tenant (login.contoso.com, through Azure Front Door). Our own web page for creating passkeys runs on a subdomain, account.login.contoso.com, because WebAuthn requires it to be within the passkey's…

Microsoft Security | Microsoft Entra | Microsoft Entra External ID
asked 2026-10-27T14:19:29.9566667+00:00
Boukhriss Ouchab, Marouane 0 Reputation points
1 answer

my acount got hacked and the login infomations got changed

i just created this acount to get help because of my ault acount got hacked an the email adress and the pasword got changed so thati cant use it anymore and i wanted to ask if you can change it back to my email adres it is ******@gmx.de . i have a lot of…

Microsoft Security | Microsoft Authenticator
asked 2026-10-27T13:55:46.9533333+00:00
laurenz kleinhempel 0 Reputation points
answered 2026-10-27T13:56:04.1+00:00

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3 answers

how to reset mf2 azure admin account after losing the phone

my manger lost his phone, and it contains an authentication app for login to azure account using mf2 , how we can reset mf2 to re login to our subscription.

Microsoft Security | Microsoft Entra | Microsoft Entra ID
Microsoft Security | Microsoft Authenticator
asked 2024-09-10T09:06:18.46+00:00
Bassam Omar 0 Reputation points
answered 2026-10-27T13:53:51.6933333+00:00
Adam White 0 Reputation points Microsoft Employee
2 answers

Log out of Authenticator app

I got logged out of my Microsoft Authenticator when I got a new phone, and I need my Authenticator to sign into my school account but it won’t let me log into my authentication app without an authentication code so I’m stuck in this loop

Microsoft Security | Microsoft Authenticator
asked 2026-10-26T17:25:58.8+00:00
Reagan Lauria 0 Reputation points
edited the question 2026-10-27T13:08:05.15+00:00
Krisztina Kiss 0 Reputation points Microsoft External Staff Admin
0 answers

i,m lockt out MFA please help

After setting up new phone authentificator app lost account i need a QR code to set it up microsoft support not reachble please help ?

Microsoft Security | Microsoft Authenticator
asked 2026-10-27T13:06:08.47+00:00
P 0 Reputation points
2 answers One of the answers was accepted by the question author.

Failed Identity Validation

Hello, I'm trying to complete the entire identity validation process in an Artifact Signing Account. I received the link to begin the procedure, and I created a verified ID with Aut10tix successfully in Microsoft Authenticator on my smartphone, and I'm…

Microsoft Security | Microsoft Authenticator
asked 2026-10-26T15:49:21.3066667+00:00
Lorenzo Zambelli 240 Reputation points
answered 2026-10-27T11:45:25.2733333+00:00
Lorenzo Zambelli 240 Reputation points
1 answer

Microsoft OneDrive Login account Issues

Dear Microsoft Support Team, I am writing to raise a complaint regarding an authentication issue with my Microsoft OneDrive account, which has a 1 TB storage subscription. I use my OneDrive account across multiple systems for accessing and managing my…

Microsoft Security | Microsoft Authenticator
asked 2026-10-27T11:44:39.7866667+00:00
Mr Navaid 0 Reputation points
answered 2026-10-27T11:45:16.14+00:00

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2 answers

Unable to Access Personal Azure Entra Tenant – MFA Lockout – Need Data Protection Team Assistance

Hello Microsoft Support, I need assistance recovering access to my personally created Azure/Microsoft Entra environment. My personal Microsoft account works correctly, but Azure Portal and Microsoft Entra Admin Center both require Microsoft Authenticator…

Microsoft Security | Microsoft Entra | Microsoft Entra ID
asked 2026-10-15T13:56:35.0966667+00:00
Avadesh Chauhan 5 Reputation points
commented 2026-10-27T11:41:46.4233333+00:00
Avadesh Chauhan 5 Reputation points
0 answers

How to fix windows Authenticator code issue while we dont have old phone with authentication aap

Not able to sign in in to microsoft 365 due to miss place old phone. Forgot to put the alternative methods like contact number etc. How can i login the microsoft withaout authenticator code ..

Microsoft Security | Microsoft Authenticator
asked 2026-10-27T11:40:29.9633333+00:00
Nehssen Sockalingum 0 Reputation points
1 answer

Microsoft Account Hacked — Email Changed, Phone Number Removed, Recovery Email Added, Original Account No Longer Recognized

My Microsoft account has been compromised. The person who accessed it appears to have changed the original email address, removed my phone number from the account, and added a recovery email address that does not belong to me. When I try to look up my…

Microsoft Security | Microsoft Authenticator
asked 2026-10-25T15:51:36.22+00:00
Neacsu George Valentin 0 Reputation points
commented 2026-10-27T11:37:54.7933333+00:00
Neacsu George Valentin 0 Reputation points
1 answer

Microsoft Global Secure Access – Incorrect egress geolocation for users physically located in Spain

Hello Microsoft Support Team, I am experiencing persistent geolocation-related issues while using Microsoft Global Secure Access from Valencia, Spain. Our IT team has confirmed that other users physically located in Spain are also being routed through…

Microsoft Security | Microsoft Entra | Microsoft Entra Internet Access
asked 2026-10-27T11:24:16.5933333+00:00
Christian Tello Rovira 0 Reputation points
answered 2026-10-27T11:25:19.34+00:00

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0 answers

Entra External ID: Federated email claim not present in OnAttributeCollectionStart/Submit payload

We are using a federated OIDC identity provider with Microsoft Entra External ID. The email claim is successful: returned from the IdP mapped via OIDC claim mapping (email -> email) correctly prefilled in the UI during sign-up However, email is…

Microsoft Security | Microsoft Entra | Microsoft Entra External ID
asked 2026-04-17T14:05:29.75+00:00
Yuliia Bashko 80 Reputation points
commented 2026-10-27T11:12:10.53+00:00
JuliaMarvin 23,490 Reputation points Volunteer Moderator
3 answers

Microsoft defender

I have microsoft 365 family subscription but can't seem to set up or make microsoft office defender work. Tried all the usual steps of resetting etc. Can you help?

Microsoft Security | Microsoft Defender | Other
asked 2026-10-27T10:16:44.35+00:00
Anup Garg 0 Reputation points
answered 2026-10-27T10:35:48.66+00:00
Anup Garg 0 Reputation points
1 answer

Lost phone that has Authenticator app

I have lost the phone that has my Authenticator app on. I tried to log in to the same Authenticator account on a different phone, but the codes have not appeared. Can you help and how am I able to transfer the codes from the lost phone. Thanks

Microsoft Security | Microsoft Authenticator
asked 2026-10-27T10:33:07.75+00:00
Lorrie 0 Reputation points
answered 2026-10-27T10:34:45.7866667+00:00

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0 answers

OneNote copyToNotebook returns 202 but the operation stays at "not started" forever (Graph v1.0)

We are calling the OneNote copy API from a scheduled automation and since around 2026-10-20 the copy operations are accepted but never executed. CALL POST…

Microsoft Security | Microsoft Graph
asked 2026-10-27T10:25:39.1066667+00:00
Kaan Gencay 0 Reputation points
1 answer

Agentless SAP connector ingests only few users into ABAPUserDetails

Good Day! we are using the Microsoft Sentinel solution for SAP applications with the agentless data connector (SAP Integration Suite), for the SAP PCE Test System to ingest the logs in MS Sentinel the Data connector includes 4 Data type …

Microsoft Security | Microsoft Sentinel
asked 2026-10-27T10:14:56.8666667+00:00
Qais Naderi 0 Reputation points
answered 2026-10-27T10:15:45.83+00:00

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0 answers

Unexpected SMS Verification Codes and AMC PROD Sign-in Attempts Across Multiple Users in Entra ID

We are seeing a large number of failed sign-in attempts across multiple users in our Microsoft Entra ID tenant involving the Microsoft first-party application AMC PROD (App ID: 81feaced-5ddd-41e7-8bef-3e20a2689bb7). Observations: Multiple users receive…

Microsoft Security | Microsoft Authenticator
asked 2026-08-09T08:53:41.49+00:00
Mohamed 0 Reputation points
commented 2026-10-27T10:13:07.1433333+00:00
Remco van der Lee 0 Reputation points
0 answers

Authenticator Lufthansa

Hej! Jag försöker logga in i min lufthansa App Miles&More. När jag har lagt in mitt lösen ord vill den att jag skall öppna authenticatorn och fylla i 6 siffrig kod . Problemet är att jag bara får upp en 8 siffrig kod. stort problem då jag inte kan…

Microsoft Security | Microsoft Authenticator
asked 2026-10-27T10:02:27.52+00:00
Victoria Dahlinder 0 Reputation points
2 answers

Files Storage: Intermittent Azure Files F: Drive Access Issue with Microsoft Entra Kerberos — Troubleshooting Steps and Client Behavior Analysis

Problem description I am experiencing an intermittent issue accessing an Azure Files SMB share mapped as a network drive on Windows 11 devices using Microsoft Entra Kerberos authentication. During a recent occurrence, the mapped drive was unavailable…

Microsoft Security | Microsoft Entra | Microsoft Entra ID
asked 2026-10-21T12:35:27.32+00:00
Paul 0 Reputation points
edited a comment 2026-10-27T09:34:25.1866667+00:00
Paul 0 Reputation points