First, you have to backup your current email accounts, settings, ... etc., by following the next steps:
- First run RegEdit (Click Start menu button. Type regedit in the search box at the bottom of the Start menu and hit Enter key.
- Find the following key; HKEY_CURRENT_USER\software\microsoft\windows nt\CurrentVersion\windows messaging subsystem\profiles\
- Now you should see an entry called "Outlook"; right click the "Outlook" folder then select "export" from the menu.
- Now export it to Desktop with the the same name, as "Outlook".
- Now copy the whole Outlook directory contents to a USB stick or a CD (please note that "Outlook directory" could be found at one of the following locations, based-on your original settings: "C:\Users\<UserName>\AppData\Local\Microsoft\Outlook\" or "C:\Users\<UserName>\Documents\Outlook Files\").
Now, after re-installing a fresh copy of Outlook, you want to restore (Import) your settings again:
- First, from your backup (USB / CD) copy the Outlook folder Contents/Files over to your new Outlook directory ("C:\Users\<UserName>\AppData\Local\Microsoft\Outlook\" or "C:\Users\<UserName>\Documents\Outlook Files")
- Also, copy your exported "Outlook.reg" file to the same location.
- Double click on the .reg file to import the registry settings.
- Hit your Start-menu button, then go to control panel\All Control Panel Items\Mail\
- Click "Show Profiles" and select the profile you just imported highlight it and select properties.
- Click "E-mail Accounts" and re-enter you e-mail passwords (if required).
- Run Outlook ... that's it.