Windows 8 HTC phone stops Syncing mail with Exchange Active Sync with error 8500201C
Windows 8 HTC 8X phone, Exchange 2007 Mailbox
Windows 8 Phone was synching fine. But suddenly it stops synching with error 8500201C
Deleted exchange profile on the phone and defined again. Phone started to sync but after some time it stopped again with the same error. Also in exchange console I saw that last sync time is updated. But in CAS server IIS log I only saw first connection attempt from the phone. No any other entry in the IIS log. (folder sync events etc.)
Windows phone 8 cannot handle malformed/corrupted mail in the mailbox and stops synching.
When the malformed strange mail is received, Windows Phone 8 phone stopped synching. We noted the time that problem started and searched the mails with received with problem time interval. As soon as malformed mail is deleted, phone began to sync without a problem.
I think Windows Phone 8 should tolerate the corrupted mails.