I have many projects/solution in my company. I want to simple them configuration.
How can I assure every project to have checked "Treat warnings as errors", it is possible? Or force all project to use one styleCop file.
You can manually change all project to Import some shared set of settings (usually named with ".target" extension) to set <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
for all projects. If doing so check if setting on project level does not override import one.
Sample from article:
</Project>
....
<Import Project="$(CommonLocation)\General.targets" />
</Project>