My old project don't build anymore

Overview

How can I build an old unity 5.5 Hololens app with new windows 10 updates installed . I think it is because Unity try to build with new UWP SDK but the app is intended to be build with old ones. I didn’t manage to change UWP version in 5.5 like I can with 2017.x

Expected Behavior

Build and deploy my app like 6 months ago

Actual Behavior

I get errors like this when I try to Build :

Assets\HoloToolkit-Examples\SharingWithUNET\Scripts\GenericNetworkTransmitter.cs(114,57): error CS0246: The type or namespace name 'StreamSocketListener' could not be found (are you missing a using directive or an assembly reference?)

Assets\HoloToolkit\SpatialMapping\Scripts\RemoteMapping\RemoteMeshSource.cs(140,69): error CS0246: The type or namespace name 'AsyncStatus' could not be found (are you missing a using directive or an assembly reference?)

Unity Editor Version

5.5.1f1

[thomasH7]

Thanks, I tried with 5.6 and newer but I didn’t manage to compile the dll (multiples errors on both Visual studio 2015 and 2017). Maybe I’ll try again later but I’m in the hurry and prefered to keep my 5.5 stable version. @StephenHodgson I finally manage to compile my project with a Unity 5.5.5 upgrade (Didn’t know Unity 5 was still updated). Thanks

[StephenHodgson]

I think there was an exception for 5.5 because of the security patch and MSFT updating the build process in VS 2017 15.3.

Glad to hear that fixed it.