Use Windows Backup or manually copy the .pst file.
When it comes to backing up (specifically Outlook, Word, Excel settings, and user data), the proper features and methods are not built into Office itself. Instead, you rely on Windows features and manual file backups. backup office 2010
Here are the proper features and locations to back up Office 2010: Outlook 2010 stores all emails, contacts, calendar, tasks, and notes in a Personal Storage Table (.pst) file. Use Windows Backup or manually copy the
Export/Import settings within each application. and user data)