Lightswitch: Download failed for 'GetAuthenticationInfo' request. The remote server responded with an error: NotFound

Question

I am currently creating a small silverlight testing application to find out if it can work with other projects.

Everything works in debugging, but as soon as I distribute it to the local IIS server, I got this error:

Download failed for request "GetAuthenticationInfo". The remote control server returned an error: NotFound.

I did a lot of research on the net, but nothing seems to solve my problem.

• I have anonymous mode turned on (and everyone else doesn't) I
• made a clean post in my IIS (7.5) from visual studio
• My IIS has two IIS backlight extensions installed through WPI
• I do not use beta

The application just displays some list, I have auth windows installed.

I tried to publish as a desktop application as a web application for client configuration, and the application server configuration installed on the local or IIS server is always the same problem (the goal is to have a two-tier application (database - application), but located in the htm file).

I can’t find what goes wrong, My IIS has just been updated with all components

Answer 1

Try restoring the .NET Framework 4 first before diving deeper into the problem.

This solved the problem in my case

Answer 2

When I get this black “Not Found” (which can be any number of things), I crank up Fiddler and examine what the web service actually returns. If you do this, you will see a real mistake and much more about what happens in the messages.

Answer 3

I had the same problem when only the .NET Framework 4.5 was installed on the server. My solution was:

• Uninstall the .NET Framework 4.5 (you need to do this to install the .NET Framework 4.0)
• Install .NET Framework 4.0
• Reinstall .NET Framework 4.5

Make sure the site is running ASP.NET v4.0.

Answer 4

check that if you use ".net framework 4.5 advanced service-> WCF service → HTTP activation", I solved it this way.