Why does OBS tried to contact Internet at launch?

[ConcernPerson]

I've already disabled "Automatically check for updates on startup" and also I don't have any streaming server.

It always tries to contact 149.56.72.190, why?

 

[WizardCM]

To clarify a few things, there's actually 3 current "update" checks with OBS, and the checkbox in settings only manages one of those.

• https://obsproject.com/obs2_update/rtmp-services/package.json is the streaming services list, which populates Settings -> Stream. This update check allows us to push service updates without needing to do a full release.
• https://obsproject.com/update_studio/whatsnew.json is a "notification" system that we implemented, but rarely ended up using. It simply will display a web-page as an in-application panel to the user when we deem it necessary to send that kind of notification out-of-band of the normal update process.
• The normal OBS version update check, which is only active on Windows and macOS versions.

Source.