- Close Outlook.
- Open Windows Explorer and enter the following address in the Address control: %appdata%\Microsoft\Outlook. Windows Explorer will update to the appropriate Outlook folder.
- Right-click the Outlook.nk2 file. It may have another name, but there should be only one file with the .nk2 extension.
- Select Copy from the resulting submenu. From there, you can copy the file to an external drive, USB drive, or CD — wherever you store your backup copies. If you copy the file to another folder on the same local drive, be sure to rename it to avoid problems.
Susan Sales Harkins is an IT consultant, specializing in desktop solutions. Previously, she was editor in chief for The Cobb Group, the world's largest publisher of technical journals.