Start by checking your internet connection is online. This means it won’t be able to send or receive any calendar event changes and will therefore fall out of sync. So, what are the most common issues? 1 – The device or account is offlineĪny kind of warning, password popup or exclamation mark on your calendar app indicates some issue with your device communicating with the service provider. Your other devices can then periodically check with the same service provider, to see if any changes were made, in order to keep themselves up-to-date. In order to maintain an up-to-date calendar, the devices themselves must send any calendar changes to the service provider.

Other lesser-known providers may use something called CalDAV, which is essentially the same thing.Īny of these systems are designed to sync calendars between your phone, tablet and computer. Most commonly, the service provider will be Apple iCloud, Microsoft Exchange and/or Google Calendar. These accounts keep your calendars in sync. You will likely have at least one service provider account on your device. It first helps to understand the very basics of what’s happening when we sync calendars. Here we explain some of the more common causes of calendar events not syncing between iPhone, iPad and Mac. Keeping your calendar in sync between devices should be easy, but there’s a lot of reasons it might go wrong.

Many of our Apple-based customers use the built-in Calendar app in macOS, iPhone and iPad. We all lead busy lives and many of us depend on our paper diary or smartphone calendar apps to keep track of our schedule. Apple Mac, iPad or iPhone calendar not syncing? Take a look at our easy to follow guide to get this fixed.

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