When you open Outlook , click on the contacts (marked in red):

Then select Address book in the right corner:

Then, when the table below appears, select next to Address book, ALL Staff (when updating staff contacts):

Then, after selecting all the contacts, click right button on the mouse and select  Add to Contacts:

The contacts you need to update will appear on the screen, then select All and wait for all contacts to update:

After updating the information in Outlook, you need to update the information on your phone as well.

Open your phone settings and follow these steps:

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4)