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# Visual Studio Team System 2008 Test Edition - Web Test error
- URL: https://blog.aunlead.com/visual-studio-team-system-2008-test-edition-web-test-error/
- Published: 2010-02-12T20:50:00.000Z
- Updated: 2021-01-20T11:40:02.000Z
- Author: Rajat Nair
- Tags: Automation, Troubleshooting, #Import 2026-09-22 19:54

I have been playing around with *Visual Studio Team System 2008 – Test Edition* for past couple of weeks. It’s a good tool for regression testing, automated testing (we can record macro’s) and load testing using IIS (more on this later).

The issue I faced was when I ran *web test* (macro recording), Visual Studio would throw this error –

> Request failed: Could not run Web test ‘Login’ on agent ‘ABCPC00124’: Method not found: ‘Void Microsoft.VisualStudio.TestTools.WebTesting.WebTestContext (System.Collections.Generic.Dictionary\`2, Int32, System.String, System.String, Int32, Int32, Microsoft.VisualStudio.TestTools.WebTesting.ValidationLevel)’.

I could successfully record web tests but could never execute them!

Solution –  
The issue was because the web test agent couldn’t reference the assembly *Microsoft.VisualStudio.TestTools.WebTesting.WebTestContext* correctly. It was resolved when I installed (actually reinstalled) the Visual Studio 2008 SP1 [https://www.microsoft.com/en-in/download/details.aspx?id=10986](https://www.microsoft.com/en-in/download/details.aspx?id=10986&ref=blog.aunlead.com).  
Hope this helps someone.