You may already know about this recent Outlook Express change but if you don’t then it’s not too late to read about it.

If any of your end users come to you and complain that they can’t read their email then one of the questions you should ask them is if they are trying to access any of their Hotmail account(s) through Outlook Express. You should also check to see if any error messages are being generated when your end users try to access their email.

This year Microsoft changed their protocol that Hotmail was using – which was the Distributed Authoring and Versioning (DAV) protocol – to a protocol called DeltaSync. The DAV protocol has been used for many years and Microsoft wanted to update their protocol stack to include the newer DeltaSync protocol which is better at supporting large email inboxes. DAV was the protocol that Outlook Express and a handful of older clients used to access Hotmail .The newer protocol, DeltaSync, enables email clients the ability to download only the changes that were made since the last synch operation. The DAV protocol instead would pull down everything.

Continue reading Hotmail Access from Outlook Express Discontinued