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Good question. I'll check on that and follow up.
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Good question. I'll check on that and follow up.

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Most people in my company use iPhones and we just noticed that everyone who upgraded to iOS 9.2.1 can no longer view shared calendars from our Exchange server. My own calendar shows fine, but our shared departmental calendar does not.<br />
<br />
On my own phone, I went so far as to wipe and reload everything, then reconfigure my mail and calendar, and it still didn't work.<br />
<br />
I've found multiple message board threads from people with the same issue and some said it can be fixed by turning iCloud off and then back on, but nobody in our company uses iCloud. <br />
<br />
My boss has not yet installed the 9.2.1 update, and all of his calendars appear as they should, so it has to be something with 9.2.1. We have not made any changes to Exchange.<br />
<br />
Any suggestions?
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Most people in my company use iPhones and we just noticed that everyone who upgraded to iOS 9.2.1 can no longer view shared calendars from our Exchange server. My own calendar shows fine, but our shared departmental calendar does not.

On my own phone, I went so far as to wipe and reload everything, then reconfigure my mail and calendar, and it still didn't work.

I've found multiple message board threads from people with the same issue and some said it can be fixed by turning iCloud off and then back on, but nobody in our company uses iCloud. 

My boss has not yet installed the 9.2.1 update, and all of his calendars appear as they should, so it has to be something with 9.2.1. We have not made any changes to Exchange.

Any suggestions?

iOS 9.2.1 Calendar Sync Issues

The iPhone is a smartphone made by Apple Inc. It and the iPad, along with several other mobile devices from Apple, run on the iOS operating system, which has its own topic, as does the iPad for device-specific questions. Native iOS applications are written in Objective-C or in Swift using the Cocoa Touch frameworks or HTML5 compiled with the help of a package manager such as Adobe PhoneGap; a common IDE is Xcode.

iPhone

iOS is a mobile operating system developed by Apple; it is a derivative of the Mac OS X desktop operating system, with which it shares many (but not all) common frameworks and other components. These include Cocoa Touch, the Mach/Darwin/XNU kernel and code from the Berkeley Software Distribution (BSD). Each iOS application runs in its own secure sandbox to prevent altering other applications, the operating system, or any other data.

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Microsoft Outlook is a personal information manager from Microsoft, available as a part of the Microsoft Office suite. Although often used mainly as an email application, it also includes a calendar, task manager, contact manager, note-taker, journal, and web browser.