DocuSign.eSign.dll parameter not valid


I am currently working on a project that requires me to send and receive contracts via DocuSign and then upload the completed contracts to a web service. I have completed the sending and receiving parts of the development but am unable to add a web service reference (I am fairly new at using web services) due to the following error:

The Connect Services component 'Microsoft WCF Web Service Reference Provider' failed: (HRESULT:0x80070057) The specified parameter value 'DocuSign.eSign.dll' is not valid. Parameter Name: 'packageName'

How do I go about resolving this issue? Where is a good place to start?

asked on Stack Overflow Mar 15, 2021 by Elcaponeza

1 Answer


DocuSign.eSign.dll is not a web service but a NuGet package. You add it to your project just like you would add other DLL files from Microsoft or third party. See step-by-step in our guide on using the DocuSign eSignature SDK.

Or, an easier approach would be to use our Quickstart that sets it all for you automatically.

answered on Stack Overflow Mar 15, 2021 by Inbar Gazit

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