Windows Phone 7 fails to synchronize with error 0x85010013 or 0x8600C2B when connecting to Microsoft Exchange Server

When synchronizing with an Exchange Server using Windows Phone 7 (WP7), synchronization fails with an error similar to the following:


The error code will be�0x85010013�or�0x8600C2B

An Exchange ActiveSync mailbox policy has been implemented with parameters the WP7 device cannot completely enforce.�

The Exchange Client Access server will respond to the device with an HTTP status of 449 whenever the device cannot enforce every parameter within the Exchange ActiveSync mailbox policy. Each subsequent synchronization attempt will fail with an HTTP status of 449 while the current Exchange ActiveSync policy is in place.

There are three methods to resolve issue.

Method 1
Modify the existing Exchange ActiveSync policy to apply only WP7 supported policy parameters.

Method 2
Create a new Exchange ActiveSync policy that applies the supported policy parameters WP7 devices can implement, and assign this policy to WP7 users.

Method 3
Enable the parameter to�Allow Non-provisionable Devices�in your Exchange ActiveSync policy.

WP7 supports the following policy parameters:


Important: Enabling Allow Non-provisionable Devices�parameter�allows devices to synchronize, even when the polices the device can enforce do not match the Exchange�ActiveSync policy parameters that are configured on the server.

The Exchange ActiveSync policies supported by WP7 can be found in the following topic from Microsoft TechNet online:�
Understanding Exchange ActiveSync

For more information on configuring policies for Microsoft Exchange ActiveSync, see the following topics from Microsoft�TechNet online:
Exchange Server 2010: Managing Exchange ActiveSync with Policies

Exchange Server 2007: Managing Exchange ActiveSync with Policies

For more information regarding considerations for WP7 and Exchange, see the following article from the TechNet Wiki online:
Exchange ActiveSync Considerations when using Windows Phone 7 Clients