There appear to be two unrelated things here:
Quote:
VS 2022 automatically adds using to cs files in c# and I don't care. How is it prevented?
Which presumably means "I don't want all the standard
using
statements that VS provides when you use a new project or class template"
You can either remove them on a file-by-file basis or a whole solution:
Quick Tip - Remove Unused Using References in Visual Studio[
^]
Or, you can create your own templates (or alter the standard templates if you are brave enough):
Create project templates - Visual Studio (Windows) | Microsoft Learn[
^]
The second is
Quote:
in internet and microsoft q&a not is posible validate login.
Which is untrue. You may not be able to - but I'd suspect that is a problem at your end. My logins are validated to MS and loads of other sites every day!
We can't help you fix that.