Fiddler reponse webview goes blank on Windows 10

[James]

I've just started to use Fiddler on Windows 10 Enterprise x86 and I notice that whatever website link I open in Firefox or Edge the Response Webview tab in Fiddler is always blank. ​Is there anyway to fix it?

[Eric Lawrence]

Hi, James--

Oftentimes, this means that the target page requires downloading additional resources or running JavaScript to render; however, the page shown in your screenshot does not require either.

I'm unfortunately unable to reproduce the problem you're seeing on Windows 10-- can you tell me the exact build number shown by WinVer.exe? Do you see this problem for all resources (e.g. images, etc)? If you navigate to the target page using Internet Explorer (not Edge) does it render? Does this system have any 3rd party security software installed?

Regards,
Eric Lawrence
Telerik

[James]

Hi, Thanks for replying. My Windows build number is: 10240. The problem is for all the resources in Fiddler Response WebView. I've tried Internet Explorer, Edge and Mozilla Firefox but the issue is still there. My system currently has the latest version of Kaspersky Total Security installed on it. I tried disabling the software but it didn't help.

[Eric Lawrence]

Hello, James--

This is a very interesting problem. If you're seeing this for images as well as HTML, it implies that hosting of the Web Browser Control is entirely broken. I'd be curious to learn if that's true for all clients (e.g. try https://bayden.com/dl/dotnetbrowser.exe) or whether the problem is somehow specific to your system.

Inside IE's Tools > Internet Options > Advanced tab > is "Use software rendering instead of GPU rendering" checked?

Unfortunately, I can't think of any good steps you might use to troubleshoot this, short of updating to the latest WindowsInsider build and seeing whether that fixes the problem.

Regards,
Eric Lawrence
Telerik