590 questions with Microsoft Security | Microsoft Defender | Other tags

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Windows Defender detects Trojan:Win64/TamperedChef.Z!MTB through malicious PDF Editor application

Hej. En familjemedlem blev utsatt av ett falskt PDF Editor program. Vet ej hur länge sedan det var installerat. Vi märkte ett par transparenta förmodligen PowerShell rutor som snabbt öppnades och stängdes. Tydligen har detta hänt någon gång ibland. Då…

Microsoft Security | Microsoft Defender | Other
asked 2026-06-12T21:12:46.7033333+00:00
anton hård hed 0 Reputation points
edited the question 2026-06-12T21:27:09.98+00:00
anton hård hed 0 Reputation points
1 answer

Attestation TPM impossible sur Black Ops 7 malgré système et BIOS entièrement à jour

Bonjour, J’ai un problème d’attestation TPM avec Call of Duty Black Ops 7. Le jeu démarre correctement, mais l’attestation échoue systématiquement et affiche le message : « Firmware du BIOS : Mise à jour requise. L’attestation a échoué. Qualité du…

Microsoft Security | Microsoft Defender | Other
asked 2026-06-12T15:34:15.19+00:00
corentin delhorbe 0 Reputation points
answered 2026-06-12T15:34:37.92+00:00

AI answer

3 answers

How to run a full scan with defender?

How to run a manual full scan with windows defender?

Microsoft Security | Microsoft Defender | Other
asked 2026-06-12T14:14:23.99+00:00
Lon Bishop 0 Reputation points
answered 2026-06-12T14:54:56.03+00:00
Lon Bishop 0 Reputation points
1 answer

Enable Microsoft Defender for Servers

I got this s360 item but when i have checked in my subscription it is already enabled

Microsoft Security | Microsoft Defender | Other
asked 2026-06-12T07:05:06.5833333+00:00
NAVEEN Mittal 150 Reputation points Microsoft External Staff
edited the question 2026-06-12T08:59:19.52+00:00
Gérard Oomens 123.5K Reputation points Volunteer Moderator
3 answers

The Windows Driver Policy

I'm trying to use my TI-84 Plus CE Python graphic calculator but it keeps getting blocked and I'm not allowed to use it any more when I connect it to the computer using the correct software. I've tried finding different solutions to remedy this but with…

Microsoft Security | Microsoft Defender | Other
asked 2026-05-21T01:29:49.8466667+00:00
Guevara, Rodrigo (NLC) 0 Reputation points
answered 2026-06-11T18:36:22.3133333+00:00
L S 0 Reputation points
0 answers

I dont know why, something keeps adding servicing to my windows defender exclusions

I did notice tho when i disable it, it comes back after shutdown/restart. Full scan and offline scan didnt find anything. Besides this which i noticed accidentally nonthing seems to be off the ordinary

Microsoft Security | Microsoft Defender | Other
asked 2026-06-11T13:24:45.3666667+00:00
Eugen Osv 0 Reputation points
answered 2026-06-11T13:25:00.87+00:00

AI answer

0 answers

Microsoft defender for Endpoint - windows Server 2025 are showing as Workstation in the Device type.

As per the Microsoft official document the rolling out for support of Windows server 2025 is started from February 2025. Since, it's been a year now, for the servers OS version which is windows 2025 are showing as Workstation for few them and their…

Microsoft Security | Microsoft Defender | Other
asked 2026-06-11T09:43:22.72+00:00
Eric 0 Reputation points
answered 2026-06-11T09:43:36.4+00:00

AI answer

1 answer

unable to turn on Microsoft defender Antivirus

unable to turn on Microsoft defender Antivirus. select quick scan and no response

Microsoft Security | Microsoft Defender | Other
asked 2025-12-31T01:41:01.4866667+00:00
Jeff Dao 0 Reputation points
commented 2026-06-11T05:12:00.0333333+00:00
Greg Moore 0 Reputation points
1 answer

Antimalware Service Executable

Antimalware Service Executable this service runs all day everyday and is causing huge spikes in CPU usage for the past month. No reported issues on my security but don't understand why it is taking up so much of my resources.

Microsoft Security | Microsoft Defender | Other
asked 2026-06-11T02:24:42.9666667+00:00
Troy Tinnes 0 Reputation points
answered 2026-06-11T02:24:54.5866667+00:00

AI answer

1 answer

log4j-core version in May 2026 update on Microsoft On prem Gateway

What is the log4j-core version in May 2026 update on Microsoft PBI On prem Gateway. Pls confirm.

Microsoft Security | Microsoft Defender | Other
asked 2026-06-10T03:43:30.6866667+00:00
Guha, Swapnadeep 0 Reputation points
answered 2026-06-10T16:13:06.9833333+00:00
MUSTAFA SALAH 1,550 Reputation points
2 answers One of the answers was accepted by the question author.

Is there risk to using binary compression?

Does using binary compression such as UPX make binaries more likely to be flagged as malware by Microsoft Defender?

Microsoft Security | Microsoft Defender | Other
asked 2026-06-10T11:06:35.9866667+00:00
dchapman 80 Reputation points
accepted 2026-06-10T13:55:50.68+00:00
dchapman 80 Reputation points
1 answer

When Microsoft Defender will support Ubuntu 26.04?

Hello, according to https://learn.microsoft.com/en-us/defender-endpoint/mde-linux-prerequisites#supported-linux-distributions it still has no support for newest Ubuntu 26.04 LTS. Script…

Microsoft Security | Microsoft Defender | Other
asked 2026-05-11T06:42:50.07+00:00
Jacek Łacny 10 Reputation points
commented 2026-06-10T08:53:56.8433333+00:00
Jacek Łacny 10 Reputation points
2 answers

PBI OnPrem Gateway: Need to update the jar log4j-core-2.25.3 to 2.25.4 (May 2026)

Dear Microsoft Support Team, I am writing to request guidance regarding compliance requirements for our Power BI On-Premises Data Gateway deployment. We recently upgraded our gateway to the May 2026 release. Following this update, we observed that the…

Microsoft Security | Microsoft Defender | Other
asked 2026-06-10T03:12:53.6233333+00:00
Guha, Swapnadeep 0 Reputation points
answered 2026-06-10T03:16:10.8633333+00:00
Guha, Swapnadeep 0 Reputation points
2 answers

OpenSSL Vulnerability in On-Premises Data Gateway

We have On‑Premises Data Gateways installed on one of our servers, running the latest update (version 3000.298 from December 2025). However, Microsoft Defender for Endpoint is still detecting OpenSSL vulnerabilities in DLL files. Is there an official…

Microsoft Security | Microsoft Defender | Other
asked 2026-01-16T12:34:58.06+00:00
Olga Lavrinets 50 Reputation points
commented 2026-06-09T20:31:58.9966667+00:00
kiwiant 0 Reputation points
1 answer One of the answers was accepted by the question author.

How can a small software publisher build SmartScreen reputation?

We are a legitimate German software company (Dr. Dresing & Pehl GmbH) publishing qualitative data analysis software since many years. After renewing our OV code signing certificate (Sectigo, valid until 2028), our installers show the "Windows…

Microsoft Security | Microsoft Defender | Other
asked 2026-04-10T09:26:46.8866667+00:00
it audiotranskription 20 Reputation points
accepted 2026-06-09T10:02:31.5666667+00:00
it audiotranskription 20 Reputation points
2 answers

windows 10 device has a error code & I do not know where it came from

My Windows 10 device has an alleged security issue with a fake code & pushing the Windows key & escape has not gotten rid of the screen, the cursor does not move to "deny" the fraud. I am not calling that alleged Microsoft #…

Microsoft Security | Microsoft Defender | Other
asked 2026-06-08T16:29:47.11+00:00
Secret Star 0 Reputation points
answered 2026-06-08T17:44:31.9933333+00:00
Secret Star 0 Reputation points
1 answer

Microsoft Defender causing high CPU usage after latest Windows update?

After the latest Windows update, Microsoft Defender seems to use unusually high CPU resources in the background. I noticed the issue mostly during scans and while opening multiple Microsoft 365 applications. I’ve checked Windows Security settings …

Microsoft Security | Microsoft Defender | Other
asked 2026-05-22T03:52:17.71+00:00
ธนมน โสภณธนวัฒน์ 20 Reputation points
answered 2026-06-08T15:24:30.4833333+00:00
Catherine Kyalo 3,100 Reputation points Microsoft Employee
0 answers

Microsoft Defender Troubleshooting

How do I fix this issue with Microsoft Defender?

Microsoft Security | Microsoft Defender | Other
asked 2026-04-23T00:08:28.4066667+00:00
Christopher Hardee 0 Reputation points
commented 2026-06-08T15:14:20.9466667+00:00
Catherine Kyalo 3,100 Reputation points Microsoft Employee
2 answers

how do I update the Microsoft Defender, Antimalware Client Version while offline

following instructions from microsoft.com I have been unsuccessful in applying any update manually to the Microsoft Defender Antimalware Client. I am using Microsoft windows 10 version 1809. the system runs version 4.18.24080....

Microsoft Security | Microsoft Defender | Other
asked 2026-06-03T19:05:36.3366667+00:00
Matt 0 Reputation points
answered 2026-06-08T14:47:08.14+00:00
Adam J. Marshall 10,786 Reputation points MVP
2 answers

Is there any solution to remove or offboard Microsoft Defender for Endpoint from these machines, given that the tenant is no longer active?

Is there any solution to remove or offboard Microsoft Defender for Endpoint from these machines, given that the tenant is no longer active? At the moment, I am unable to download the offboarding script since the original tenant is no longer accessible.…

Microsoft Security | Microsoft Defender | Other
asked 2026-04-19T13:47:24.2433333+00:00
Vincent Chung Khui Pin 10 Reputation points
answered 2026-06-08T09:34:21.6533333+00:00
Vincent Chung Khui Pin 10 Reputation points