If you are using mobile devices with Windows Phone 8, and you sync mail with Exchange 
Server, you can get Error Code 86000C29
This problem is caused by Microsoft Exchange ActiveSync policy which prevent to sync your mailbox with mobile device with Windows Phone 8
When your mobile device is trying to sync mailbox from Exchange Server, first ActiveSync policy is enforced for this device. If device can’t pass policy requirements than it can’t sync mailbox.
Because mostly ActiveSync policy Require Encryption on Storage Card.
So to resolve this issue you need to open EMC, Organization Configuration, Client Access, tab Exchange ActiveSync Mailbox Policies.
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