In a Microsoft Exchange Server 2013 environment, when you try to sync your email messages on an ActiveSync device, the device may receive several Ping.FHSyncRequired replies several times a day. This causes the device to become unresponsive until the sync process is complete.


This issue occurs when a non-IPM folder isn't filtered correctly during the ActiveSync process.

Cumulative update information

For Exchange Server 2013

To resolve this issue, install Cumulative Update 15 for Exchange Server 2013 or a later cumulative update for Exchange Server 2013.


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.


Learn about the terminology that Microsoft uses to describe software updates.

Need more help?

Expand your skills
Explore Training
Get new features first
Join Microsoft Insiders

Was this information helpful?

What affected your experience?

Thank you for your feedback!