I have a similar problem.
It started two days ago. Windows Mail no longer display emails in the
preview pane. When you select one, there is a short pause and then just a
blank where the message is.
I tried upgrading to Windows Live Mail, but it has the identical problem.
Thinking it might be something with my messages, as I recently moved a bunch
of email folders around, I created a new Windows Mail folder (renaming the
old one), and I indeed get a new blank set of email folders, but the same
problem.
I tried uninstalling IE 8 but that did not help. I reinstalled it as well,
which did not help.
Running Windows Mail as administrator didn’t help either.
I also followed online instructions about deleting all IE temporary files
(other than cookies) and the contents of c:\windows\temp. That did not help.
Something about the connection between Windows Mail / Windows Live Mail and
IE may be the problem. If I check the box to have all email read as plain
text, I get odder behavior. When I then select a plain text email, after it
fails to show, it has an attachment with the subject line of the message and
a .txt extension. If you click on that, a message box appears saying
“Windows cannot find ‘xxxxx.txt’. Make sure you typed the name correctly,
and then try again.’ The xxxxx is again the subject line of the email. It's
like Windows Mail is trying to get IE to display a formatted version of the
email but putting the message in a temporary file somewhere IE can’t get to,
or the temporary file never actually got written out.
The behavior is somewhat different for an HTML email. After not opening, it
has two attachments, such as ATT0046.txt and ATT0049.htm (note the numbers
differ). Clicking on the text file gives the same message as above.
Clicking on the htm file brings up a message box asking if I want to open
ATT0050.htm (note again that they differ). Saying yes gets me an IE window
with the HTML message in it.
The above is based on the plain text email box being checked. With it
unchecked, the attachments don’t appear at all.
Does anyone know where Windows Mail puts temporary files for IE to display?
Maybe that’s where the problem is.
Thanks.