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Asked: 2026-05-11T17:50:37+00:00

I’ve been getting an error recently while debugging an ASP.NET application in Visual Studio

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I’ve been getting an error recently while debugging an ASP.NET application in Visual Studio 2008:

‘Error connecting to undo manager of source file XYZ’

Any idea how I can get rid of the error?

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1 Answer

  1. Editorial Team

    Wouldn’t you know it; just after I post this I find a workaround in Scott Hanselman’s Blog, in the comments:

    1) Right-click the designer file and select delete

    2) Right-click the aspx file and select Convert to Web Application

    Thanks to Matthew, whomever you are.

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