An error occurred on the server. Please contact the system administrator.
In order to get more detailed information about the error, add the following code:
reportViewer.DebugMode = DebugModeEnum.Full;
It can be one of the following errors:
- The request failed with HTTP status 404: Not Found.
- The remote name could not be resolved: 'ServerName'
- Client found response content type of '', but expected 'text/xml'.
The request failed with an empty response.
All of them are related with the following setting (in one row):
Opening in a browser can help to understand if it's correct:
If it doesn't open, set the correct address. Reporting Services Configuration Manager can help to get the necessary information:
Related article: The remote server returned an error: NotFound.