The mailbox may have some emails with an excessively long subject line that are not supported by Windows Phone 8. Once you have removed the suspect mail item (i.e. cleaned the mailbox or move the suspect mail to a folder that phone does not sync) the error will cease.
- Why is the viewfinder set in macro mode on the Nokia Refocus app?
- Are there known limitations in the Nokia Refocus app on my Lumia phone?
- What can I do with the Nokia Refocus app on my Lumia phone?
- How do I create ringtones using a Ringtone Maker app on my Lumia device?
- What to do if I cannot see my songs in the Ringtone Maker on my Lumia phone?