UWP NOT COMPILING

Alvaro Rivoir 11

Since I updated Visual Studio UWP projects aren´t compiling anymore.

I get a lot of these errors

Could not copy the file "C:\XXXXXX\bin\Release\C1.UWP.Core\C1.UWP.Core.xr.xml" because it was not found. C1.UWP.Calendar

It is looking for a xr.xml file that is not in that folder, there is one extra "C1.UWP.Core" in the path that is non-existent. The real file is in "C:\XXXXXX\bin\Release\C1.UWP.Core.xr.xml".

I tried checking "Generate library layout", but doing so the xaml files aren't compiled to xbf, and it ends up breaking nuget packages.

This is blocking the whole release. I need an urgent solution.

Hans.Nguyen 1 Reputation point

2019-12-13T02:10:44.717+00:00

I double this. It is really serious and urgent for us! We need a solution!
Fay Wang - MSFT 5,196 Reputation points

2019-12-13T06:42:30.947+00:00

Try to clean the project, delete the bin and obj folders, then rebuild the project, will the same issue occur?
Hans.Nguyen 1 Reputation point

2019-12-13T06:59:46.34+00:00

that's always the first thing developers do, and it didn't resolve, the issue still occurs.
Fay Wang - MSFT 5,196 Reputation points

2019-12-20T07:20:00.633+00:00

If you try to compile this project on different Visual Studio versions on other machine, will the same issue occur?
Hans.Nguyen 1 Reputation point

2019-12-20T07:27:55.303+00:00

The same issue still occurs.
Anyway, I found the work around, I need to update target version of UWP with min to at least Build 16299 (Fall Creators Update, version 1709) then rebuild and the issue will be gone.

Why the target UWP version has something to do with the build output?
Fay Wang - MSFT 5,196 Reputation points

2019-12-20T10:00:42.513+00:00

There may be a problem with the SDK, but it is not yet sure. Do you have the same problem with Calendar? Is the error message same as that in the question?