Core does NOT automatically start when Opening VSC

Yes, this is my problem…
I always have to start the CORE by clicking on the PIO icon in the VSC environment…
The ALIEN thing I mean…
But sometimes it will auto start…
Why is that?
Can somebody help me understand this?
Tahnks
CIAO

PlatformIO should be started automatically as soon as a project (with a platformio.ini) is opened in the workspace.

There are also settings that influence the start of PlatformIO.

Well I think my project has .ini file connected…
I mean, when I open VSC it automatically open my source code file and in another tab the .ini file for this project…
I will give a look at the configuration you mentioned, but I can not understand why sometimes the CORE start and sometimes it does not…
Anyway thank you for your tips…
CIAO