Can not publish project into file system

It happens when i try to update Microsoft.Net.Compilers package using Nuget Manager to last stable version (its 2.6.1 atm):

If i do not do an upgrade, the publication is successful:

Why is this happening and where to configure this Assembly? In the settings of the project, no integration or connection to Azure at all.

Hope this information can help someone. I had the same issue as reported here - and would like to share it here too or to confirm the solution to the problem.

Publishing did not work (file system, web or any other), everything builds but the resulting message was:

11>Connecting to C:\MY_LOCATION...
11>
========== Build: 10 succeeded, 0 failed, 0 up-to-date, 0 skipped ==========
========== Publish: 0 succeeded, 1 failed, 0 skipped ==========

No additional information was provided. Changing the VS build output settings did not lead to any more information than I already had. Then I stumbled upon this post, reverted to Microsoft.Net.Compilers" version="2.6.0" did not help. Same result.

Comparing the Nuget packages with the branch that worked, turned out that publishing work fine with:

I have to point out that loading and publishing the same project (same settings) work fine with Visual Studio 2017.

After reverting to 2.4.0 version, things work fine in my case too.

Additional info:

• Visual Studio 2015
• C# ASP MVC Project

Hope this helps!

Happy coding