it immediately presents you with a host of windows

[Mango Kid92]

it immediately presents you with a host of windows
What does the sentence mean?

I found it on a book about C# programming

I can't understand what "a host" means...

Is it an idiom sentence?

 

[Paulfromitaly]

Threads without background and context will be closed! - Ogni thread senza un adeguato contesto verrà chiuso!

Ci piacerebbe sapere di cosa si parla, visto che programming vuol dire tutto e niente.

 

[TimLA]

"A host" is a dramatic way of saying "many".
...it immediately presents you with (many/quite a few/a lot) of windows.