Hello, I am dealing this issue pretty long time but with no result. I was able to add shared calendars of my colleagues in Macbook Calendar. But now I need to add it also to iPad (or iPhone). Like it or not but for example our CEO uses just iPad, no PC. So I need to figure our how to open shared exchange calendar in iPad.

Thank you for your tips.

If you can open the full OWA in Safari or some other browser, you could get it there, but otherwise I know of no way. Your Mac connects with EWS, but the iDevices use ActiveSync.

So you mean I can open it just in OWA, but not to download the calendar from OWA to iPad calendar. Am I right?

Yes, that's correct.

I could not open full version of OWA - do not know why. I unclicked possibility to open it in Light version but it opens in light version anyway and there is no shared calendar.

But anyway, I would like to have it directly in my calendar.

I'm not sure if it's possible to open the full OWA from an iPad...perhaps somebody else knows, but in the version which shows on my iPad, that functionality is not allowed.

There is no way to add a shared calendar/mailbox to an iDevice.