80,127 questions with Microsoft Security-related tags

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Hacked - bot installed Remote access Trogan

Outlook account only accessed though my Samsung phone. No computer. No iPad. Used a bot to guess my password. Has deleted allll my emails. I have changed my password , enabled 2 factor and recovered my account - HOWEVER - the R.A.T. is still active.…

Microsoft Security | Microsoft Authenticator
asked 2026-02-26T03:32:11.1966667+00:00
Cody Jordison 0 Reputation points
answered 2026-02-26T06:12:42.2+00:00
Sumit Shukla 0 Reputation points
2 answers

Admin account cannot sign in or switch directory – AADSTS50000

We have an Azure Active Directory (Microsoft Entra ID) tenant where our only Global Administrator accounts suddenly cannot sign in to Azure Portal or switch directories. This account was previously working and had full administrative access. Now, on…

Microsoft Security | Microsoft Entra | Microsoft Entra ID
asked 2025-12-12T13:21:39.36+00:00
amit basu 0 Reputation points
answered 2026-02-26T06:05:09.4666667+00:00
Dynamics 365 Admin 5 Reputation points
1 answer

Without a forgotten PIN cannot open my computer

I own a computer with years of documents, photographs, reports, Job files, and everything else you typically have on a computer. However, the one in question is locked down, with no apparent way to resolve it. On the opening screen, it asks for a PIN…

Microsoft Security | Microsoft Authenticator
asked 2026-02-26T05:14:35.29+00:00
Jess J Scrivner, Jr 0 Reputation points
answered 2026-02-26T06:03:58.5533333+00:00
Sumit Shukla 0 Reputation points
1 answer

Microsoft Entra ID Password Writeback drawbacks?

Hi, We have a client that has a licensing feature that will allow password write back. My question is, are there any drawbacks if we will implement it, alongside SSPR? Appreciate your comments!

Microsoft Security | Microsoft Entra | Microsoft Entra ID
asked 2026-02-26T05:41:53.74+00:00
Christian Ogorda 0 Reputation points
answered 2026-02-26T06:00:05.24+00:00
Sumit Shukla 0 Reputation points
0 answers

Fix corrupted OneDrive files

Unacceptable files are being downloaded into my onedrive pics

Microsoft Security | Microsoft Defender | Microsoft Defender for Cloud Apps
asked 2026-02-26T05:40:15.7233333+00:00
James Robbins 0 Reputation points
0 answers

AADDS104 critical alert without any changes to nsg

Managed domain reporting AADDS104 (Critical) – “Microsoft is unable to reach the domain controllers.” No NSG, DNS, UDR, or peering changes were made. Internal connectivity verified: - LDAP 389 reachable - DC IPs responding - Replica set shows…

Microsoft Security | Microsoft Entra | Microsoft Entra ID
asked 2026-02-24T05:00:15.3333333+00:00
Mim Kol 0 Reputation points
commented 2026-02-26T05:33:51.0333333+00:00
Sridevi Machavarapu 22,040 Reputation points Microsoft External Staff Moderator
1 answer

How to Fix Authenticator App

Hello, I cannot access my account and it seems to be an Authenticator issue. I get stuck in a loop and a tech support rep told me I could get help here. Here is what happens: I log in using my email address and PW It tells me I need to verify this log…

Microsoft Security | Microsoft Authenticator
asked 2026-02-25T21:33:03.38+00:00
stella p 0 Reputation points
edited the question 2026-02-26T04:42:41.5733333+00:00
Ian-T 7,375 Reputation points Microsoft External Staff Moderator
0 answers

Authenticator issue due to change location and phone

Hi, I am the global admin of my Microsoft 365 tenant. I changed phones and no longer have access to my Microsoft authenticator device. I cannot receive SMS verification. I need my MFA reset for the other two accounts associated with the same domain so I…

Microsoft Security | Microsoft Authenticator
asked 2026-02-26T04:31:35.6233333+00:00
Accounts Team 0 Reputation points
0 answers

Purview Exchange Mailbox (at-rest) Data Discovery and Classification

Hello, I understand that currently Purview Information Protection (auto-labeling policies with SIT's as criteria) and Purview eDiscovery and Content Search may have limitations to scanning and classifying content in Exchange online emailboxes at-rest. …

Microsoft Security | Microsoft Purview
asked 2026-02-26T04:15:42.93+00:00
AzGeek 0 Reputation points
edited the question 2026-02-26T04:24:59.4666667+00:00
AzGeek 0 Reputation points
0 answers

The Downloading Of Dangerous Downloads Ratios In 2026 ?

In 2026,i like to assume the M.D.A. had the same level of protection as it's rivals in 2026,as many experts who also claim that to be from their own websites,but sadly it isn't the case.I can say that the ratio/s of the amount of downloading dangerous…

Microsoft Security | Microsoft Defender | Microsoft Defender for Cloud
asked 2026-02-16T22:47:41.59+00:00
Anonymous
commented 2026-02-26T04:24:09.4333333+00:00
Anthony Lee 1,135 Reputation points
1 answer

Phone number issue - Austria

Right now our customer cannot register to our system. Every time he used his phone number to register, it always threw error "bad phone number". Can someone help me with this issue?

Microsoft Security | Microsoft Authenticator
asked 2026-02-24T03:19:00.8633333+00:00
Tuan Manh Duong 60 Reputation points
commented 2026-02-26T04:18:57.3133333+00:00
Tuan Manh Duong 60 Reputation points
1 answer

About An Installed Trojan Virus?

In 2026,my solely installed M.D.A. was unable to deal with an installed trojan virus.My installed M.D.A. has even been weirdly enough not have any issues with all the other kinds of computer viruses,and in my case, once the computer is damaged by just…

Microsoft Security | Microsoft Defender | Microsoft Defender for Cloud
asked 2026-02-26T03:24:12.9233333+00:00
Anonymous
answered 2026-02-26T04:15:00.5533333+00:00
Anthony Lee 1,135 Reputation points
1 answer

Troubleshoot Wi-fi access points /wireless router - 18 wireless networks found. How do I get Wi-fi for my HP printer and get rid of multiple access points?

Troubleshoot Wi-fi access points /wireless router - 18 wireless networks found. How do I get Wi-fi for my HP printer and get rid of multiple access points?

Microsoft Security | Microsoft Defender | Microsoft Defender for Office 365
asked 2026-02-26T03:31:19.36+00:00
Mickie Gray 0 Reputation points
answered 2026-02-26T03:31:31.4933333+00:00
Q&A Assist
1 answer

I lost my authenticator to my tiktok account because I reset my phone is there a way to get it back?

I contacted TikTok support they said they cannot help my TikTok account was linked to my authenticator app I was wondering if there’s a way to either unlink it without logging in or a way to get my old authenticator back?

Microsoft Security | Microsoft Authenticator
asked 2026-02-26T03:20:23.3733333+00:00
J W 0 Reputation points
answered 2026-02-26T03:20:35.1366667+00:00
Q&A Assist
0 answers

My microsoft account has been hacked

hi i tride to log on to my account but could not and found my recvery email had been changed. as i see all my bing points being used on robucs i tride to recove the account but it says if 2FA is active thay cant do anything and to try recovey emal. but…

Microsoft Security | Microsoft Purview
asked 2026-02-26T03:08:33.6166667+00:00
ian buncher 0 Reputation points
7 answers

Microsoft Authenticator – Sign-in requests not visible in Recent activity

Hello, I have been experiencing a strange issue for the past 24 hours with the Microsoft Authenticator app on my iOS phone. At intervals of a few hours, I received sign-in requests from Microsoft Authenticator on my phone. Since I noticed the…

Microsoft Security | Microsoft Authenticator
asked 2026-01-19T19:56:03.6766667+00:00
Oğuzhan YAVUZ 40 Reputation points
commented 2026-02-26T02:52:47.64+00:00
Ash Shaw 0 Reputation points
0 answers

How to reset MFA Authenticator App (Admin) ( I Change mobile phone not backup )

How to reset MFA Authenticator App (Admin) ( I Change mobile phone not backup ) Can't Verify Mobile Phhone

Microsoft Security | Microsoft Authenticator
asked 2026-02-26T02:47:30.66+00:00
Sriborisuth Forging 0 Reputation points
0 answers

How do i get my microsoft account back after it was hacked and deleted

My account hot hacked and deleted and i'm trying to get it back before its too late.

Microsoft Security | Microsoft Identity Manager
asked 2026-02-26T02:39:11.58+00:00
John Crawford 0 Reputation points
1 answer One of the answers was accepted by the question author.

Sign-in failed Error code: AADSTS5000224 Error message: AADSTS5000224: The tenant you are trying to access has been deauthenticated and is no longer available. Try signing in using a new or private browser window.

I encountered this issue when logging into my personal Azure account. Error code: AADSTS5000224 Error message: AADSTS5000224: The tenant you are trying to access has been deauthenticated and is no longer available. Try signing in using a new or private…

Microsoft Security | Microsoft Entra | Microsoft Entra ID
asked 2026-02-24T07:58:00.47+00:00
Ziqiang Zhang 20 Reputation points Microsoft Employee
accepted 2026-02-26T01:58:32.3733333+00:00
Ziqiang Zhang 20 Reputation points Microsoft Employee
2 answers

I am not receiving a verification code on the authenticator app

I keep getting this message "Enter the code displayed in the authenticator app on your mobile device​​" but no code is coming to my mobile device. Moved from Microsoft 365 and Office | Subscription, account, billing | For home | MacOS

Microsoft Security | Microsoft Authenticator
asked 2026-02-24T13:22:22.6033333+00:00
TLeo 0 Reputation points
commented 2026-02-26T01:43:50.2733333+00:00
TLeo 0 Reputation points