459 questions with Microsoft Security | Microsoft Defender | Other tags

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Questionable Defender Phone number

844 530-1855 what is this number claiming to be from Microsoft Defender

Microsoft Security | Microsoft Defender | Other
asked 2026-03-12T18:12:04.1466667+00:00
Keith Palmer 0 Reputation points
accepted 2026-03-12T18:59:27.9066667+00:00
Keith Palmer 0 Reputation points
1 answer One of the answers was accepted by the question author.

Update for Microsoft Defender Antivirus - KB2267602 (Version 1.445.492.0) DOWNLOADS BUT FAILS TO INSTAL

Update for Microsoft Defender Antivirus - KB2267602 (Version 1.445.492.0) DOWNLOADS BUT FAILS TO INSTALL

Microsoft Security | Microsoft Defender | Other
asked 2026-03-12T10:43:19.45+00:00
Phil Brownlee 0 Reputation points
accepted 2026-03-12T10:50:19.16+00:00
Phil Brownlee 0 Reputation points
1 answer

NO Indcidents or Alerts generated in Sentinel/Defender Portal

Hi!, I am tryign to learn Azure eco system. I spinned up 2 VM's one Windows Server and other as Linux machine. Setup Log anlytics and all connected and can see logs from VM's. However when installed senintel , also connected with data connecotrs & I…

Microsoft Security | Microsoft Defender | Other
asked 2025-12-28T04:02:32.52+00:00
Haskee 0 Reputation points
commented 2026-03-12T07:42:31.68+00:00
Pauline Mbabu 1,815 Reputation points Microsoft Employee
1 answer

email fraud using Microsoft name

|This is a copy of an email I received today about a transaction on Microsoft Azure| | -------- | Alert rule description |Is this fraud Email and should I disregard it?| | -------- | MICROSOFT CORPORATION BILLING AND ACCOUNT SECURITY NOTICE (REF:…

Microsoft Security | Microsoft Defender | Other
asked 2026-03-11T19:40:26.4266667+00:00
WALTER ALLAN 0 Reputation points
answered 2026-03-11T21:49:06.2666667+00:00
Erland Sommarskog 133.2K Reputation points MVP Volunteer Moderator
2 answers One of the answers was accepted by the question author.

Windows 11 - After notification that windows security "blocked this action" how do I see what was blocked?

I go into "Protection History" and see a list of risky actions blocked. I hover over an entry and down arrow appears suggestion the entry can be expanded. (It doesn't. Poor UI design.) Clicking on the arrow or anywhere on the entry opens…

Microsoft Security | Microsoft Defender | Other
asked 2026-03-11T14:31:22.7866667+00:00
Monahan, Chris 20 Reputation points
accepted 2026-03-11T15:16:37.49+00:00
Monahan, Chris 20 Reputation points
1 answer

Device Asset Errors in Defender Portal

We're consistently seeing multiple errors in the Device Assets Defender page like "os version data can’t be retrieved. Try refreshing the page or check again later." among other similar errors stating other pieces of data cannot be retrieved. …

Microsoft Security | Microsoft Defender | Other
asked 2025-12-10T13:29:26.65+00:00
Brandt, Ben 0 Reputation points
answered 2026-03-11T09:54:23.04+00:00
Prathista Ilango 830 Reputation points Microsoft Employee
1 answer

Problem with Training Assignments, Training doesn't start

We launched a training campaign via the Attack Simulation Training in Defender and assigned the following trainings: Generative AI What is multi-factor authentication Risky USB At our location in Denmark, users cannot start the ‘Generative AI’…

Microsoft Security | Microsoft Defender | Other
asked 2026-03-11T08:32:39.5866667+00:00
Kevin Jung 0 Reputation points
answered 2026-03-11T08:32:52.2433333+00:00
Q&A Assist
0 answers

version(Release 23H2 Build 22631.6199) issue

During the last Windows security update, some computers did not update to Windows 11 64-bit (Release 25H2, Build 26200.7462); however, others updated successfully and are working properly, but for this (Release 23H2 Build 22631.6199) the Microsoft…

Microsoft Security | Microsoft Defender | Other
asked 2025-12-17T11:52:23.42+00:00
Shkar Farhad 0 Reputation points
commented 2026-03-11T05:18:03.8833333+00:00
Shkar Farhad 0 Reputation points
1 answer One of the answers was accepted by the question author.

About The M.D.A.'s Reviews In 2026?

I checked many online reviews of the M.D.A in 2026, and all experts there claimed the M.D.A. can detect and remove on par with it's rivals and even had a much higher detection rate,and took their word for it, until i noticed every dangerous downloaded…

Microsoft Security | Microsoft Defender | Other
asked 2026-03-10T23:42:28.11+00:00
maroner pierre 40 Reputation points
accepted 2026-03-10T23:44:33.5666667+00:00
maroner pierre 40 Reputation points
1 answer

Adaptive Protection broken in M365 Academic tenants (M365 A5 user)?

It appears that there is a bug in Insider Risk Management within academic tenants using Microsoft 365 A5 licenses. When a user with an assigned M365 A5 license tries to access the Adaptive Protection blade within the Purview Insider Risk Management…

Microsoft Security | Microsoft Defender | Other
asked 2025-12-19T17:59:36.39+00:00
Dean Murray 5 Reputation points
commented 2026-03-10T17:53:21.99+00:00
Jonathan Teoli 0 Reputation points
1 answer

How to prevent users from logging into personal ChatGPT/Claude accounts on corporate devices using Microsoft Security Stack?

Hi everyone, I am looking for a robust way to enforce Corporate-only access to Generative AI platforms (specifically ChatGPT and Claude) across our organization. The Goal: Users should be able to log in using their Corporate Entra ID (SSO), but they must…

Microsoft Security | Microsoft Defender | Other
asked 2026-03-02T07:13:48.0366667+00:00
DAVAADEMBEREL PU 5 Reputation points
commented 2026-03-10T15:43:21.37+00:00
Mark Sculthorpe 5 Reputation points
2 answers

Defender not install

Security Intelligence Update for Microsoft Defender Antivirus - KB2267602 (Version 1.443.1003.0) - Current Channel (Broad) - Error encountered and how to fix

Microsoft Security | Microsoft Defender | Other
asked 2026-02-04T23:39:57.45+00:00
Arnal, Maria Elisa 0 Reputation points
commented 2026-03-10T09:53:20.37+00:00
Sang Le 0 Reputation points
1 answer

Text in Microsoft Defender Phishing Simulations

Is the email text used in phishing simulations by Microsoft Defender human-generated or AI-generated? We are conducting a study and want to reference previous phishing simulation data obtained in our institution, but we need to understand if the phishing…

Microsoft Security | Microsoft Defender | Other
asked 2026-03-04T18:17:50.6266667+00:00
Wagner, Amber N 0 Reputation points
answered 2026-03-10T09:40:18.6033333+00:00
Pauline Mbabu 1,815 Reputation points Microsoft Employee
11 answers

Trojan Vigorf.A in OpenHardwareMonitorLib.sys

Windows Defender is telling me that a trojan: vigorf.a is in a file; OpenHardwareMonitorLib.sys I've told it to remove, rebooted several times. It's still there.

Microsoft Security | Microsoft Defender | Other
asked 2025-09-04T22:12:48.1266667+00:00
Mark James 70 Reputation points
commented 2026-03-10T00:11:57.7966667+00:00
Tom Wilson 0 Reputation points
2 answers One of the answers was accepted by the question author.

About The M.D.A. In 2026 vs The M.D.A. Before 2026 Differences?

In 2026, what improvement/s did the M.D.A. get?, that it never got before 2026.I ask this question because i only noticed the M.D.A having a new name changed from the old name of W.D. before 2026.There are many unproven claims in many websites that the…

Microsoft Security | Microsoft Defender | Other
asked 2026-03-08T05:36:13.38+00:00
Anonymous
answered 2026-03-08T07:35:00.8933333+00:00
_AW_ 66,831 Reputation points Volunteer Moderator
1 answer

VIRUS and threat protection is missing

hi i got a problem please help me i don t have virus and threat options anymore and i wanna i checked i noticed that windows defender is missing no i don t have an antivirus in my pc help ,e thank you i have tried a lot of things but it does not work

Microsoft Security | Microsoft Defender | Other
asked 2026-03-07T20:18:51.1433333+00:00
davidhoon 0 Reputation points
answered 2026-03-08T00:54:15.9033333+00:00
John L Carr 0 Reputation points
1 answer One of the answers was accepted by the question author.

About The Amount Of The Virus Definitions Of The M.D.A. In 2026?

In 2026,some experts claim the M.D.A. is not keeping up with the amount of newer virus definitions that's needed daily,after it's rivals are way ahead as claimed?,after explaining that newer computer viruses are not getting detected because of the M.D.A.…

Microsoft Security | Microsoft Defender | Other
asked 2026-03-07T21:54:32.7833333+00:00
Anonymous
accepted 2026-03-07T21:56:47.9133333+00:00
Anonymous
1 answer

Security Health Setup Not working

I dont know what to do?

Microsoft Security | Microsoft Defender | Other
asked 2025-07-25T11:41:01.71+00:00
Hirthik Sukumar 10 Reputation points
commented 2026-03-07T10:53:24.25+00:00
paresh umraliya 20 Reputation points
1 answer

my account was hacked and my email was changed

my account was hacked they changed my email and deleted my phone number but they havent changed my password i need to change the email back to mine but i cant

Microsoft Security | Microsoft Defender | Other
asked 2026-03-06T23:33:02.8366667+00:00
Olly Shipsides 0 Reputation points
answered 2026-03-07T05:58:29.5033333+00:00
G225 - MVP 2009-2020 26,410 Reputation points Volunteer Moderator
1 answer One of the answers was accepted by the question author.

Malwares Went Through Without Pressing The Download Button?

In many cases Malware/s or worse has gone through without pressing any buttons to download an offer from the website.Malware/s or worse has even appeared in the process tab of my computer unaffected by the installed M.D.A. detections?. Malware/s or worse…

Microsoft Security | Microsoft Defender | Other
asked 2026-03-07T02:42:35.53+00:00
Anonymous
accepted 2026-03-07T02:49:09.42+00:00
Anonymous