Hi Lincoln,
The steps are :
1.) Firstly, Launch Outlook.
2.) On the outlook menu, Click on the File menu on the menu bar, Now click on ‘Open& Export‘.
3.) Click on ‘Export from another file‘, Then click ‘Next‘.
4.) Now, Select ‘Comma Separated Values‘.
5.) Select the file that you want to browse, By using the ‘browse‘ button specify the location of the file.
Note: You can select the actions for duplicate files such as allowing, replacing or avoiding all the duplicate files.
6.) Select the Destination folder in which you want to import the specific file.
Your file will be imported Now, You can view all your contacts.