Windows 10: Windows Defender zaps apps without asking or reporting

Windows 19041.388 Pro.
App is from 2013, paid for, Koyote Free Video Converter.
If I try to run it I get a very brief busy, and then nothing. Not deleted, just doesn't run. Nothing can be found in Task Manager.

If I disable Windows Defender and reinstall it, it works fine. The moment Defender re-enables itself the app becomes "dead" again.

Defender also has the nasty habit of saying known, safe apps are low risks, kills them, and gives me no option to say allow on this device. Need to disable Defender in order to use them.

Been doing it for about a month.

:)

 

Installing Apps on Windows 10 Has Windows Defender Finding Malware

Hi Tommy,

Welcome to the Microsoft Community.

• 
  Is this issue specific to third party apps?
  

I would suggest you to open Windows defender and add exclusions and check if it helps. Follow the steps to add exclusions in windows Defender.

• 
  Type Windows defender settings in the search bar and press enter
  
• 
  Under Exclusions click on Add Exclusion
  

Hope this information helps. Reply to the post with an updated status of the issue so that we can assist you further.

 

windows defender

Hello,

Thank you for posting your query on Microsoft Community.

The information provided by you is not enough for us to provide you troubleshooting step. So, I would appreciate if you can provide us the following information to narrow down the issue.

• What issue you are facing with Windows Defender?
• Are you willing to update Windows Defender?

I would suggest you to refer the article mentioned below to ask question on the forum. After referring to the article do get back to us with more information related to your issue and we will be happy to assist you.

Suggestions for asking a question on help forums


Regards,

 

windows defender

Hi,

Thank you for posting your query in Microsoft Community.

To assist you better, I would like to ask if you get any error message.

I suggest you to follow the steps provided below:

Method 1: Make the “Windows defender Service” startup type to “Automatic”.

• Press “Windows key + R” from keyboard.
• Type “services.msc” without quotes in the “Run” Window and hit enter.
• Search for “Windows Defender Service”.
• Make “Startup Type” to “Automatic”.
• Restart the computer and then check how it works.

Method 2: Run a SFC (System File Checker) Scan by following the steps provided below.

• Right click on Start button and select “Command Prompt (Admin)”.
• Type “sfc /scannow” and press Enter.
• After the scan is complete, type “exit” and press Enter.

For more information about SFC scan, click on the link below:

https://support.microsoft.com/en-us/kb/929833

Also, would like to inform that if other antivirus is running in the computer, Windows Defender will be disabled.

Hope the information is helpful. Keep us posted on the status for further assistance.