If you’ve recently upgraded your Windows Phone 8.x to Windows 10 Mobile, you may encounter some lag in synching your contact and calendar with your Outlook or Outlook.com. The lag may be a few hours to never. I’ve even read the Microsoft Support forums of people hard resetting the phone to solve this problem.
This problem seems to be especially pervasive if you’re like me and your primary Microsoft Account is NOT a Microsoft domain like Hotmail.com, MSN.com or Outlook.com.
In Windows 8.x, all we needed to do was to go to Settings -> EMail account and long-tap to Sync the account manually. However, in Windows 10 Mobile, this is not possible anymore.
I’ve just discovered the reason and the solution. It’s actually very simple, but it may cost some battery life in the short-term.
As you can see from the screen caps, my primary Microsoft Account has an alias to a now defunct domain. This means that I don’t receive ANY email to this email account anymore.
By default, your email accounts (& by extension, Microsoft Account), is set based on your usage as shown in the 3rd screen cap.
If you regularly send and receive email, Windows 10 Mobile will internally set your Sync frequency to “as item arrive”, so whenever you receive an email, it is automatically pushed to your phone or tablet immediately.
However, if you don’t receive ANY email and only occasionally change items in your Contact or Calendar, Windows 10 Mobile will try to save battery by toggling the Sync frequency to “daily” or less.
All you need to do is to go to Settings -> Accounts -> Your email and accounts -> Tap <your primary Microsoft Account> or any other accounts where you’ve chosen to sync Contacts and/or Calendar -> Manage -> Change mailbox sync settings -> Download new content -> change to “as item arrive” -> Done -> Save.
Windows 10 Mobile will immediately sync your Contacts & Calendars, and will continue to do so immediately when you make any changes in Outlook or Outlook.com.
Note that your battery life may suffer a little so if you have less active accounts, you should set those to “based on my usage”.
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