To import contacts from an Excel file to Outlook, you first need to open the workbook sheet containing the contacts you want to save in the e-mail manager. When you have it open, go to File > Save As. You will see the following window:

Saving the workbookSaving the workbook

Browse to the location where you want to save the file. Once there, click on the tab that lets you select the type of file to save the book in:

Saving as a CSVSaving as a CSV

From all the available ones, click on CSV:

Type of file selectedType of file selected

Click on the Save button. You will get the following message on the screen (do not worry, this is a limitation that only affects CSV files; your original workbook will remain the same):

CSV limitation noticeCSV limitation notice

Click OK and you will get the new file. Now, the original Excel file will be closed, and the CSV file will be opened. Close it yourself and open Outlook. At the top of the mail manager window, select File:

File menu in OutlookFile menu in Outlook

Click on Open and Export:

Open and export menuOpen and export menu

Then, click on Import / Export:

Import Export buttonImport Export button

In the window that appears, select Import from another program or file and click on Next:

Import from another program or fileImport from another program or file

Then, select Comma Separated Values, and click Next:

Selection of CSV valuesSelection of CSV values

Browse for the CSV file that you want to import by clicking on Browse and click Next:

Selection of the CSV fileSelection of the CSV file

The Contacts value should be selected by default. If this is not the case, scroll up or down until you find it and select it. Once you have it, click Next:

Selecting the destination folder for the imported dataSelecting the destination folder for the imported data

Make sure that the box next to Import filename.csv is checked:

Customized field mappingCustomized field mapping

Now, before finishing the process, we have to match the CSV file columns to the Outlook contact fields. To do so, click on the Assign custom fields button:

Mapped fieldsMapped fields

Matching fields will be matched automatically, but you may have to match some manually. Click on Finish and the process will be complete:

Button to complete the importButton to complete the import

The process seems a bit difficult, but if you follow the steps described below, you will have no problems.