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A week ago I was watching videos on Youtube. Then all of a sudden, a new window on pops up saying its a Microsoft webpage, and that that it has detected a virus and spyware in my computer. It was also asking me for my Microsoft username and password, and was saying that I visited some website that was illegal and I would have to pay a fine or end up in prison, but I never visited any website that was illegal. I assumed it was just a scam, and shut down my computer so it would go away. However, this morning that exact same pop up appeared, saying all the same stuff and asked or my username and password again. My question is, is that pop up actually from Microsoft, or is it just a scam? More...

Hi, My laptop is displaying the Windows Defender Actions Recommended Icon, but when I open the dashboard, I cannot find anything to resolve. I also have Avast installed. Best More...

my computer has been 'taken over' by this error message, supposedly from Microsoft support. it claims that there is a hacker and if I close the page/ignore the message Microsoft will be forced to disable my computer, shut it down to protect their network. how can I verify that this is a ligitimate message from Microsoft? it's asking me to call a 833 number listed so they can walk me thru the process of removing the virus. the message says it's a too free number for Free Checkup. then it asks for my user name and password. i'm suspicious. More...

How do I stop antimalware service executable from running constantly windows 10? I would like to disable windows defender, but do not know how. More...

I turned my computer on and this warning pops up telling me to call their support team, apparently my computer has been compromised or so I was gathering. The lady on the other end told me to press the windows key along with R. After doing so I clicked ok and something else popped up. After having a bad feeling about it I lied to her my computer shut down and would not turn back on. Have I opened up my computer for them? If so what should i do? More...

Currently, Windows Defender flags the EaseUS Todo Backup Free software installer executable as a Potentially Unwanted Software if you have enabled PUA Protection through PowerShell. It is a popular and widely used backup tool so I would like to get to the bottom of if it is a legitimate detection or a false positive. Screenshot of the detection: https://i.gyazo.com/8097338f12fcab6db1ba33c3e96d3e17.png I sent the file in for analysis and this was my first attempt here: https://www.microsoft.com/en-us/wdsi/submission/301d75ab-ad73-46af-812c-5c712b0965d0 The response was they were unable to detect it and wanted me to reply with more info...Seeing no option on the page to reply I simply went ahead to create a new submission with more details. In the second submission I provided screenshots as well as an explanation of it being detected as a PUA but was completely brushed off: https://www.microsoft.com/en-us/wdsi/submission/017acc37-248f-4373-8703-df8eb09b9171 As you can see in this second submission, whoever on the Windows Defender team that looked at this submission cannot read and thought I was submitting an inquiry for a new detection - it clearly says "Incorrect detection" in my submission. This is beginning to turn into a waste of my time and patience, I am asking if someone competent can help look into this? Thank you, Mike More...

I'm wondering if I need to use the Kaspersky uninstall removal tool. I uninstalled it through Programs, but am wondering if "remnants" of it are preventing Defender from turning on. I've already tried the tips about manually starting it through command prompt and going through the Action Center. Tried to reinstall Defender, but it wouldn't, as it's already installed, but won't turn on. Any thoughts out there? I'm trying to do this for an elderly lady. Very frustrating!! Thanks, Chris More...

i cannot turn my windows defender on. have tried times without numbering yet still the same issues, please i need help More...

Hello, I was pointed here by an MS rep during a live chat and I am not sure if it is the right place (or category) but here goes. I am launching a standalone exe (test version) of a visual designer and generating the following error: "Error message is: Access Violation at 0x00486773 (tried to read from 0x00000010), program terminated. LastCP is 'RF' The standard, current working version of the application works ine as I imagine that it asks for elevated privileges during install and thus works fine. From research, I think the error is from trying to write to the keystore from a non priveleged application and so it fails. But what can I do about it? [Moved from : Windows 10 / Files, folders, & storage] More...

Virus and threat protection keeps popping up on my screen constantly. When I go in to check it says no virus found, How do I get rid of this pop up? It is annoying. More...

I recently installed windows 10 and wish to take full advantage of the security, hence i need to protect myself from ransomware by creating a one drive account. apparently my email address is associated with two accounts, one personal that i just created and one business that i don't recall creating. At any rate, when i try to set up one drive, it won't accept my email with the new password i set up for personal account, so i try to change password and it tells me the email address is not associated with an account. what should i try now? More...

I received an email with a recording telling me my computer was compromised. it gave me a phone number to call and someone helped. his number is 1-877-997-4999. I'm hoping this wasn't a scam. More...

Still waiting for an answer More...

Dear microsoft: Got another browser block on Chrome from a hacked website. Easy enough to get out of it. But why is there no action on these hackers? They are using your trademarks. Here is the 1-800 number: 1-800-833-5606. Tell me what you're doing about it. More...

I am receiving old and already read emails by the thousand into my inbox. How do I stop this? More...

Severity Rating: Critical Revision Note: V1.0 (January 10, 2017): Bulletin published. Summary: This security update resolves vulnerabilities in Adobe Flash Player when installed on all supported editions of Windows 8.1, Windows Server 2012, Windows Server 2012 R2, Windows RT 8.1, and Windows 10. More...

Revision Note: V1.0 (January 10, 2017): Advisory published. Summary: Microsoft is releasing this security advisory to provide information about a vulnerability in the public version of Identity Model Extensions 5.1.0. This advisory also provides guidance on what developers can do to help ensure that their apps are updated correctly. More...

Revision Note: V1.0 (January 27, 2017): Advisory published. Summary: Microsoft is releasing this security advisory to provide information about a vulnerability in the public versions of ASP.NET Core MVC 1.1.0. This advisory also provides guidance on what developers can do to update their applications correctly. More...

Revision Note: V1.0 (February 21, 2017): Summary: This bulletin summary lists security bulletins released for February 2017 More...

Severity Rating: Critical Revision Note: V1.0 (February 21, 2017): Bulletin published. Summary: This security update resolves vulnerabilities in Adobe Flash Player when installed on all supported editions of Windows 8.1, Windows Server 2012, Windows Server 2012 R2, Windows RT 8.1, and Windows 10. More...

Severity Rating: Important Revision Note: V2.1 (February 23, 2017): Revised bulletin to announce a detection logic change to Monthly Rollup Release KB3205403 and Monthly Rollup Release KB3205404. This is an informational change only. Customers who have already successfully updated their systems do not need to take any action. Summary: This security update resolves a vulnerability in Microsoft .NET 4.6.2 Framework?s Data Provider for SQL Server. A security vulnerability exists in Microsoft .NET Framework 4.6.2 that could allow an attacker to access information that is defended by the Always Encrypted feature. More...

Revision Note: V2.0 (March 14, 2017): Advisory rereleased to announce that the changes described in this advisory have been reverted as of November 2016. This is an informational change only. Summary: Microsoft is announcing a policy change to the Microsoft Root Certificate Program. More...

Severity Rating: Important Revision Note: V1.0 (March 14, 2017): Bulletin published. Summary: This security update resolves a vulnerability in Active Directory Federation Services (ADFS). The vulnerability could allow information disclosure if an attacker sends a specially crafted request to an ADFS server, allowing the attacker to read sensitive information about the target system. More...

Severity Rating: Critical Revision Note: V1.0 (March 14, 2017): Bulletin published. Summary: This security update resolves vulnerabilities in Adobe Flash Player when installed on all supported editions of Windows 8.1, Windows Server 2012, Windows Server 2012 R2, Windows RT 8.1, and Windows 10. More...

Severity Rating: Important Revision Note: V1.0 (March 14, 2017): Bulletin published. Summary: This security update resolves an information disclosure vulnerability in Windows DVD Maker. The vulnerability could allow an attacker to obtain information to further compromise a target system. More...