Morning,

We have been using Windows Phone 8.1 for around 18 months, with little/no active sync connection issues.  Originally running on Exchange 2007.

Upgraded to Exchange 2013, again, little/no issues.

Since applying CU8, we have a random set of users whose mail will stop syncing on the Windows Phone.  It won't download new mail but they can still send from the device.  Removing the mail account and re-adding fixes the issue, although some users are experiencing it more than once, sometimes on a daily basis.

Has anybody heard of anything like this? Trying to find some consistency in it.  Maybe a red herring but one user has an iPad, and when his mail stopped on the Windows phone, it continued on the iPad happily.

Thanks

Hi Warwick,

I found that Activesync policies sometimes stuck not updated when upgrading from Exchange previous versions to newer ones. Check if you can edit your ActiveSync policy (including default one), try to disable/enable it.

Also, trying Get-MobileDevice 'problemuser' | remove-MobileDevice would surely define if connectivity problem is not related to previous device connections remains. Note that EWS not always immediately display/respond to this clean-up.