May 19, 2016  I just upgraded to Outlook 2016. This is setup for a POP account. My Calendar items are there, I can search for them and find them, but they are not visible in the day, week, or month view. Calendar Problem: Private Items Not Showing (Outlook 2016 for Mac) By marking a calendar item (appointment, meeting, or event) as Private, you hide the details of the item from people who have permission to view your calendar.

I had this same issue and was able to resolve it. I found that the server settings in Calendar did not match the settings in Mail. Specifically, go to Mail > Preferences > Accounts and look for the 'internal server' for the exchange account and copy it.

Then go to Calendar > Preferences > accounts and look for the 'internal server' for the exchange account and paste the server from Mail. In my case Calendar was trying to use 'm.outlook.com' as the server and and after I replaced with the server from Mail that had a more specific name, the Calendar started syncing again.

Still broken Unfortunately switching the account off and on again didn't work. And I couldn't find the Cache file for TimeZones - although I do suspect that time zones are part of the problem.

The main issue (Calendar.app not syncing with Exchange) started when I switched time zones on - I have now switched it off but that doesn't help. I also upgraded to Yosemite recently and I'm pretty sure that's when calendar invites received through Mail.app started behaving oddly - beforehand I would just click Accept and the email disappeared. Now nothing seems to happen. I have just installed the latest Outlook for Mac, which looks quite nice, but as far as I can tell there is a basic #fail in the UI - no swipe in the Calendar. If you want to change weeks or months you have to mouse click the left/right buttons in the banner.

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I'm simply not going to do that. Calendar.app lets you move really fast with two-finger swipes on the trackpad. So I'm still very keen to get Calendar.app working! Any other ideas? '/' is different than ' '! I have experienced the same annoying issue (triangle with question mark and dialog box with the server sync error) for few days on OS X Yosemite.

I solved the issue by going to Calendar -> Preferences. -> Server Setting (tab) and changing Internal Server: server.name.eu Server Path: /EWS/Exchange.asmx to Internal Server: server.name.eu Server Path: EWS Exchange.asmx Once I type the server path with Windows style backslash ' ', the information changed to Internal Server: server.name.eu EWS Exchange.asmx Server Path: / and since then I do not get the server sync error anymore. I did the same for the External server path. Hope this helps! '/' is different than ' '! I have experienced the same annoying issue (triangle with question mark and dialog box with the server sync error) for few days on OS X Yosemite. I solved the issue by going to Calendar -> Preferences.

-> Server Setting (tab) and changing Internal Server: server.name.eu Server Path: /EWS/Exchange.asmx to Internal Server: server.name.eu Server Path: EWS Exchange.asmx Once I type the server path with Windows style backslash ' ', the information changed to Internal Server: server.name.eu EWS Exchange.asmx Server Path: / and since then I do not get the server sync error anymore. I did the same for the External server path. Hope this helps!

Hi, Im using Outlook 2016 for Mac. Whenever I create a new meeting and send, it does not reflect in the calendar view. The mail domain Im using is @gmail.com.