(This request may be specific to VS solutions which produce only DLLs, and not to ones which create a .exe.)

At the moment, the default behaviour for everything else in my VS project is to not produce warnings unless something might be wrong, which I may need to action.

WinForms,as of the latest release (2025) is the only thing which produces warning messages where there is not problem, which is not very tidy. I only want to see things in the build output which need my attention, defintely not 'happy' messages, or warnings which are not needed.

Currently, for each project in my solution, I get a message like:

1>  [Telerik and Kendo UI Licensing]
1>        Valid Telerik UI for WinForms license found. Make sure the main application also references Telerik.Licensing when using a class library.

...but I have a valid licence, and everything is OK. No action is needed.

Your support suggested adding...

  <TelerikLicensingVerbosity>quiet</TelerikLicensingVerbosity>

...to each project in my solution, but that still produces the above build message.

A polite solution would be to turn-off ALL such warning messages, and let me switch them ON when needed. Preferably via a setting somewhere, not by editing the VS project file, which means unloading, editing the project file, and realoading each of many  projects.

(Visual Studio 2026, not currently an option in the drop-down below)