Real-time Windows Defender protection service slows down Visual Studio, etc.

Question

Over the past two months, I have observed a strange phenomenon with the real-time protection service , which is part of Windows Defender in Windows 10.

If this service is set to ON, then it takes a long time for Visual Studio to complete to complete. Visual Studio itself will start forever. In addition, if managed add-ins are installed in Outlook (written using Visual Studio Tools for Office, VSTO), Outlook takes 13-14 seconds to start! When this service is disabled, Outlook starts again within two seconds or so.

I put this on Twitter with Windows support and tried to discuss this online with Microsoft support for an hour without any permission. Looking around the internet, I see that there are users who report the same problems as

http://ardalis.com/speed-up-visual-studio-build-times

Slow page refresh during development

I noticed this for only two months. I tried deploying new virtual machines to Azure, etc., to test this, and in each case, I noticed that this Real TIme security service is the culprit. My main concern is Outlook Add In load time, to be honest.

I tried posting this on Microsoft's answer site here , but so far no luck. I was hoping that if anyone knows how to solve this without adding an exception for Outlook to the real-time protection service (after which the add-in will load as expected within 200 milliseconds).

Answer 1

I had the same symptoms and my problem was fixed by disabling logs in the Microsoft.Net Framework Assembly Binding Log Viewer (FUSLOGVW.exe). I forgot that I checked the test and left the login.

• Run the viewer as an administrator.
• Click the Options button.
• Disable Logging

Answer 2

Try to exclude the file types associated with Visual Studio from Windows Defender as this person did for Delphi :

If you are healthy without any protection, you can disable Windows Defender , but I would not recommend it.