To ensure you get a complete reset, uninstall it, delete the data files and reinstall. just go to control panel>>mail(32bit)>>show profiles>delete all profiles here. then open the outlook, you will be opening a fresh account.
How to uninstall Microsoft® Outlook 2007 from Windows® 7
How to Delete Outlook Account
To delete a program, go to Start > Control Panel. Select Programs from the left-hand menu. Select Programs and Features from the drop-down menu. Click Uninstall after right-clicking the Office app you want to remove.
There is no “Uninstall Outlook” option when you try to remove Microsoft Outlook from your computer. Microsoft Office is a collection of applications that includes PowerPoint, Word, and other programs. Uninstalling Outlook from Microsoft Office should do the trick.
If you’re in a situation where Outlook won’t start, try performing the following steps to reinstall it: nTry downloading and running Outlook Repair Tool instead of trying to repair Outlook yourself. nIf that doesn’t work, follow these steps and restart your computer: Start by opening Control Panel. Look for Mail > Configure > Delete Account from Menu. If this option is grayed out and/or unavailable, then your profile may be partially corrupted or missing files elsewhere on your PC may be preventing access to certain options (you must uninstall Office before attempting this).
When you create a new profile, Outlook will generally be “good as new,” but it will have to download any email from online accounts that you sync with again. In most cases, yes – you would uninstall it and then reinstall it using ISOs for Outlook or the Office ISO files.
On the left-hand side of your Settings window, look for a heading called “Apps & features.” Select it, then scroll down the list of apps until you come upon your Office 365, Office 2016, or Office 2013 installation. To remove the Office suite, click “Uninstall,” then press “Uninstall” again.