I have a problem with Outlook 2007. I did something wrong at first and now it doesn't start. I entered some Exchange server setting by mistake and it keeps saying that there is no Exchange server network. I reinstalled Office but the problem didn't go away and I continue to get the same error.f so Click Tools, Account Settings and select the account created and click Remove. If it does not, open control Panel and then Mail (Classic View In XP) and click Show Profiles.