OLEXP: Cannot Open Message During Newsgroup Download

When you are downloading the messages in a newsgroup while displaying the message headers, if you try to open a message in the list, the message may not open and you may receive the following message:

This behavior can occur for either of the following reasons:

• You are downloading a large number of messages from a newsgroup you have not viewed recently.
• You are downloading a large number of messages from a newsgroup over a slow connection to the news server.

To resolve this issue, do not try to open a newsgroup message appearing in the header list until the header download is finished.

This behavior is by design.