201 questions with Microsoft Security | Microsoft Defender | Microsoft Defender for Office 365 tags

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False Positive Dispute – Domain Owner Request for Review – scnv.io

Dear Microsoft Defender SmartScreen Team, I am writing on behalf of Scanova, the owner and operator of the domain scnv.io, to formally dispute its classification as a malicious website by Microsoft Defender SmartScreen. We have recently been informed by…

Microsoft Security | Microsoft Defender | Microsoft Defender for Office 365
asked 2026-04-17T13:13:07.32+00:00
Amit Bisht 0 Reputation points
answered 2026-04-17T13:13:30.99+00:00
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1 answer

Can admins with E5/Defender P2 licenses purge phishing emails from E3‑licensed mailboxes using Threat Explorer?

Good evening, Our company recently downgraded most users from Microsoft 365 E5 Security to Microsoft 365 E3. Before the downgrade, we used Threat Explorer to identify and purge phishing emails from user mailboxes. After the downgrade, we lost access to…

Microsoft Security | Microsoft Defender | Microsoft Defender for Office 365
asked 2026-04-17T00:26:32.06+00:00
Puri7y 45 Reputation points
answered 2026-04-17T00:26:45.0833333+00:00
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2 answers

how to add trusted domains

Hi All, One of our users is experiencing link redirection in Microsoft Teams through Microsoft Defender for Office 365. When the user clicks a link in Teams, it is routed through the “Verifying link” page before opening. We have a few trusted domains,…

Microsoft Security | Microsoft Defender | Microsoft Defender for Office 365
asked 2026-04-13T23:51:43.8933333+00:00
Roger Roger 7,571 Reputation points
answered 2026-04-14T05:57:06.56+00:00
Roger Roger 7,571 Reputation points
1 answer One of the answers was accepted by the question author.

How to Modify Attack Simulation Training Malware Attatchment DOCX File

In the attack simulation training content library, you can select malware attachment techniques to use as your payload. Everything is normally modifiable such as email information, email content, themes and what not, etc. but what I can not find is how…

Microsoft Security | Microsoft Defender | Microsoft Defender for Office 365
asked 2026-04-08T16:18:36.4766667+00:00
Nicholas Johnson 20 Reputation points
accepted 2026-04-13T17:57:07.7166667+00:00
Nicholas Johnson 20 Reputation points
2 answers

Trojan:MSIL/AMSIBypass.KK!MTB

I have this malware appearing on my computer and would like to understand the best steps to remove it.

Microsoft Security | Microsoft Defender | Microsoft Defender for Office 365
asked 2026-04-03T16:04:31.4833333+00:00
Mike and Kelly Bonte 0 Reputation points
answered 2026-04-12T17:25:59.8333333+00:00
Mike and Kelly Bonte 0 Reputation points
1 answer

Initiating Web Protection on my Samsung S-25 android cellphone?

I just purchased a Dell computer with Windows 11 and I have a Windows Office 365 Personal subscription. I tried to download Windows Defender on my Samsung S-25 android cellphone and it won't let me allow accessibility permissions to complete the phone…

Microsoft Security | Microsoft Defender | Microsoft Defender for Office 365
asked 2026-04-08T21:03:18.9+00:00
Allen Bergseth 0 Reputation points
answered 2026-04-08T21:03:31.62+00:00
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1 answer

Open SSL Vulnerability libcrypto-3-x64.dll and libssl-3-x64.dll

Experiencing issues with OpenSSL vulnerabilities affecting organization security score. So far, I was not able to find any fix for it, tried updating the programs, doing windows updates even take ownership of the program file and delete manually. but the…

Microsoft Security | Microsoft Defender | Microsoft Defender for Office 365
asked 2026-03-18T16:50:17.11+00:00
alex kalapnauth 25 Reputation points
answered 2026-04-07T22:40:56.75+00:00
Saeid Agheli 0 Reputation points
1 answer

Quarantine email notifications filling up inbox

Recently my inbox started getting Quarantine notifications in place of spam and has started to fill up my inbox like spam did. The pathway inside the spam email has a lot clicks, loads external pages and is overall a time killer. It's potentially worse…

Microsoft Security | Microsoft Defender | Microsoft Defender for Office 365
asked 2026-04-06T17:13:07.1166667+00:00
Chris Griffin 0 Reputation points
answered 2026-04-06T17:13:28.3533333+00:00
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1 answer

Microsoft Defender O365 incorrectly classifying trusted sender as High Confidence Phish

Hello everyone, I’m experiencing an issue with Microsoft Defender for Office 365 incorrectly flagging a legitimate email as “High confidence phish” The sender (pac@aludra.cloud) is trusted and has already been validated. However, multiple emails with…

Microsoft Security | Microsoft Defender | Microsoft Defender for Office 365
asked 2026-04-06T14:54:03.0533333+00:00
Jose Flores 0 Reputation points
answered 2026-04-06T14:54:21.7033333+00:00
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0 answers

Temporarily deactivate VPN

I need to termporarily inactivate the VPN but don't know how to do so. I am trying now on my laptop with Microsoft 365, windows 11 but don't know where to find it. On my iphone when I try to inactivate it in Microsoft defender, it immediately turns it…

Microsoft Security | Microsoft Defender | Microsoft Defender for Office 365
asked 2025-10-23T16:36:55.64+00:00
Ruth 5 Reputation points
commented 2026-04-06T03:17:30.5466667+00:00
Hisham Madi 0 Reputation points
0 answers

Virtual and threat protection not working

I tried working Quarts for academics It worked fine but all of a sudden it doesnt load. I tried reinstalling it didnt work, Then it showed if windows security doesnt then pops this error and my windows security is stuck with blackscreen I don't…

Microsoft Security | Microsoft Defender | Microsoft Defender for Office 365
asked 2026-04-04T21:58:50.5133333+00:00
Sahithi pavani Vejju 0 Reputation points
1 answer

My SS # is wrong in Defender and I can't access it

I received a notice from Defender that I needed to check due to a problem. I tried earlier and answered the questions and said something was wrong and I had to wait so many hours. I tried again to today and added a recovery pin and once again I could…

Microsoft Security | Microsoft Defender | Microsoft Defender for Office 365
asked 2026-03-31T19:14:09.7433333+00:00
Sandra Tunnell 0 Reputation points
answered 2026-04-04T12:51:16.33+00:00
Yutaka_K_JP 1,655 Reputation points
1 answer

Can I speak to a live agent about protection for my software on my computer due to some things have stopped working

I need to speak to a live agent in reference to support and protection for my software

Microsoft Security | Microsoft Defender | Microsoft Defender for Office 365
asked 2026-04-03T17:41:59.9166667+00:00
Sherry Hamilton-Leach 0 Reputation points
answered 2026-04-03T17:42:20.05+00:00
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1 answer

locked out of computer

Microsoft has locked me out of my HP Windows 11 computer

Microsoft Security | Microsoft Defender | Microsoft Defender for Office 365
asked 2026-04-01T20:51:51.0233333+00:00
David Habib 0 Reputation points
commented 2026-04-01T20:53:36.9+00:00
David Habib 0 Reputation points
0 answers

Meine Emails sind unzustellbar

Seit Freitag bekomme ich folgende Rückmeldung, wenn ich eine Email versenden möchte: This message couldn't be delivered because the sending email address was not recognized as a valid sender. The most common reason for this error is that the email…

Microsoft Security | Microsoft Defender | Microsoft Defender for Office 365
asked 2026-03-30T09:09:01.1133333+00:00
Dr. Stephan Thiel 0 Reputation points
2 answers

security Admin centre reports not loading

reports are not loading in defender . They were working ok.

Microsoft Security | Microsoft Defender | Microsoft Defender for Office 365
asked 2026-01-27T11:43:25.6266667+00:00
eimear 20 Reputation points
commented 2026-03-30T02:40:40.3466667+00:00
Alex Findlay 31 Reputation points
1 answer

spam email

Please note that I am receiving so many emails on Info email. I blocked so many other emails related to this thread, but I am still receiving emails from them. Could you please check how you can support to block them. how to block them in office 365

Microsoft Security | Microsoft Defender | Microsoft Defender for Office 365
asked 2026-03-26T21:46:35.6866667+00:00
Mohamed Ismail 0 Reputation points
commented 2026-03-28T19:19:00.8366667+00:00
John Kelsey 0 Reputation points
0 answers

In Microsoft Defender Tune alert, can I use wildcards or regular expressions for an Email subject condition?

Each time we send out a newsletter, the inevitable autoreplies from a fraction of the recipients trigger a false positive "Mail bombing activity detected" alert from Microsoft Defender. I tried to create a Tune alert rule for resolving these…

Microsoft Security | Microsoft Defender | Microsoft Defender for Office 365
asked 2025-09-03T16:13:06.3766667+00:00
Tilman Schmidt 270 Reputation points
commented 2026-03-27T12:26:12.89+00:00
Brantly Unger 0 Reputation points
1 answer

Microsoft defender is blocking customers from using my website.

I have a website, www.ellacard(.)com that thousands of customers use to send digital greeting cards and other digital goods. Today I have been notified by several customers that their access to our site has been blocked by Microsoft defender all of a…

Microsoft Security | Microsoft Defender | Microsoft Defender for Office 365
asked 2026-03-25T21:44:55.1866667+00:00
Francesco Balestra 0 Reputation points
commented 2026-03-25T23:08:03.8233333+00:00
Francesco Balestra 0 Reputation points
1 answer

Gmail.com, 99.9 of emails are being flagged as SPAM

Once Healthily domain Microsoft Defender is marking gmail.com as spam for a shared mailbox.

Microsoft Security | Microsoft Defender | Microsoft Defender for Office 365
asked 2026-03-24T22:38:08.51+00:00
Joseph Sestito 0 Reputation points
answered 2026-03-24T22:38:25.5266667+00:00
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