1. Remove Outlook profile in control panel - mail.
2. Flush all files inside of c:\users\username\appdata\local\microsoft\outlook and c:\users\username\appdata\roaming\microsoft\outlook.
3. Edit registry as per article and use the following path \\sis-fs03\ost\username (create that subfolder on that network location).
4. Start and configure Outlook.
5. Close Outlook and configure for cached mode.