QP
This behavior occurs when you create a folder on the Hotmail server that
contains a forward slash (/) character in the folder name, and you attempt
to read a message in that folder.
/QP
Source: http://support.microsoft.com/kb/252520

Have you created a folder (at www.hotmail.com) where the folder name
includes a slash (e.g., "Mail from/to Joe")?

The above notwithstanding, posts from others today who access their Hotmail
accounts in OE suggest that there might be a temporary problem on Hotmail's
end right now.

PS: May I assume you're aware that the way you're accessing your Hotmail
account in OE now (i.e., via WebDAV) will not be available after 01
September? See
http://mailcall.spaces.live.com/blog...33!50889.entry

--
~PA Bear

Steve B. wrote:
I think the answer to your question is Yes. I'm in Outlook express
viewing
my address book that is stored locally on my computer. When I click on
Tools, synchronize Now, I then get the error message. I've been using
this
feature for years without any problems, so that I can synchronize my
contact
list on my hotmail account. Any ideas? Thanks.

"PA Bear [MS MVP]" wrote:
Are you attempting to synchronize Address Book and Hotmail Contacts?

Steve B. wrote:
When I try to sync my Outlook Express Address book, I receive an error
message saying, "Some of your contacts were not synchronized because of
errors communicating with the server. Try again to finish synchronizing
your
address book. (Error 800ccc34)." No matter how many times I try to
synchronize, I get the same error message. Any ideas on how to fix?
Thanks.