View source for Sync errors and possible reasons

Below you'll find an explanation of some error reports and possible reasons.

== org.dmfs.dav.exceptions.UnauthorizedException: null ==
The server refused the stored credentials by responding with "401 Unauthorized". You've probably changed your password on the server recently. To update the password go to "settings" -> "accounts & sync" -> Your account -> "Edit account settings" -> "Update password".

== org.apache.http.conn.HttpHostConnectException: Connection to YOUR SERVER URL refused ==
The name of this error may be somewhat misleading. In many cases it just means the connection to the server has timed out - i.e. no connection could be established. This may happen due to insufficient connectivity or when a sync is triggered during a phone call (many devices loose their data connection during a voice call).

== org.apache.http.client.ClientProtocolException: calendar-query failed ==
This is probably a server bug. You're probably using ownCloud or an older version of SabreDAV (see known issues in [[ownCloud]]). Try to upgrade your SabreDAV installation (or the SabreDAV part of ownCloud). If you're not using SabreDAV or ownCloud and you get this error send me an email, please!

== javax.net.ssl.SSLException: Read error: ssl=0x34b548: I/O error during system call, Connection reset by peer ==
Probably a connectivity issue. If this happens very often you should check your connectivity or your server.

== javax.net.ssl.SSLException: Read error: ssl=0x351428: I/O error during system call, Connection timed out ==
Probably a connectivity issue. If this happens very often you should check your connectivity or your server.