Dear all,
we use the following component in our Windows Form (.net 4.7.2 application): Microsoft.ReportingServices.ReportViewerControl.Winforms 150.1620.0
Since we migrated our server on a new domain, we are getting sometimes the following execption in ReportViewer:
The request failed with an empty response
I found the problem is regarding our firewall that sometimes performs a 307 Temporary redirect. Following the flow with chrome here what happens:
1)Request is made
2)Redirect to nmlauth.html page, which the push through the web service.
SSRS Report viewer component probably doesn't support this scenario. It expects to have some data in the response, while it has a redirect.
This can be easily unlocked, and it works for some hours: if you open a browser an open an address, the firewall does his stuff and next requests are fine, for a while. Probably the firewall keeps a cache of the requests and let the Report component go through without any redirection.
Is it possible to ask for a fix in Report Viewer, to handle this king of redirect in a proper way?
Many thanks for your support