I'm using Vista Ultimate, so OE is out of question. But this error message also bug me when I launch Outlook 2007! This is what I do to fix the problem: In the regedit, I have this: HKEY_CURRENT_USER\IDENTITIES\ Last User ID {00000000-0000-0000-0000-000000000000} and a key like this below: {082842C3-9154-4EC0-A83A-6CFF28F55636} So, I copied the key value {082842C3-9154-4EC0-A83A-6CFF28F55636} and pasted it into the Last User ID. Hooray, the Identity Switched Cancelled message never appears again. :thumbup :thumbup
