The request failed with HTTP status 401: Unauthorized.

We are using SQL Server Reporting Services 2008 R2 with much success.

I just created a report which performs properly when run from Reporting Services.

When trying to execute it from a vb.net desktop app the following error is thrown:

The request failed with HTTP status 401: Unauthorized.

The code that throws the error is:        execInfo = WebReference1.LoadReport(reportPath, historyID)

Any information to help resolve this will be greatly appreciated.

Thanks in advance!