Reporting Services Login Dialog Box (SSRS)
Use the Reporting Services Login dialog box to provide credentials to publish reports to the report server.
Note If this is the first time you have published a report to a report server since set you set the deployment property TargetServerURL for a project, verify that the server name you specified is similar to http://localhost/reportserver, and not http://localhost/reports. Specifying the reports directory on the local server instead of the reportserver directory indirectly causes this dialog box to open. For more information about setting TargetServerURL, see Set Deployment Properties (Reporting Services).