Most recently, I had to turn to Virtual Server 2005 R2 from a C # program code. Along with this product there is a dll, through which any interaction is performed.
But the interaction did not work because of a strange error about the wrong security level of the execution context. Unfortunately, I do not remember how it is called now, I did not save the text of the error.
But as it turned out, the thing was that by default the impersonation level is set to the “Delegation” state and for integration with the Virtual Server, “Impersonation” is needed. So the decision was to change the level of impersonation:

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But there was another problem. I did not have at the beginning the “Properties” item in the context menu. And all because I turned off the MS DTC service.