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.
- Where can I find information about WhatsApp, Skype, Angry Birds, Twitter, NimBuzz, Viber, Fring, or some other non-Microsoft application (3rd party application)?
- What are effects on the Cinemagraph app on my Lumia phone?
- My phone feels warm
- I have forgotten the password for my Lumia phone
- My Lumia phone does not work or respond as expected