xxx does not implement IReportServerConnection or could not be found at Microsoft.Reporting.WebForms.ConfigFilePropertyInterface in SharePoint
Posted by ken zheng on November 4, 2009
If you create a custom viewer and add in your web.config.
<add key="ReportViewerServerConnection" value= ...>
You will find your Site Ussage report will not working and throw error with your assembly does not implement IReportServerConnection or could not be found. After searching the net and I found Steve’s blog. Although the error is different, the fix is the same.
“The problem is that web config’s are inherited in IIS therefore the reporting services web service web config settings are inherited from the report manager web config which means that the setting you removed is needed for report manager but breaks the web service.”
So to fix the problem, go to C:\Program Files\Common Files\microsoft shared\Web Server Extensions\12\TEMPLATE\LAYOUTS and open web.config, add:
<appSettings>
<add key="ReportViewerServerConnection" value="" />
</appSettings>
