Open the email, then close it and try to delete it. Or try working offline
(file > work offline...depends on your version of Outlook). Restart Outlook
and try to delete the file then. Or try the following:
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.