To convert the exported Outlook contacts to the FritzBox format, proceed as follows:

• Open the "AddressBookConverter" app.
   
• On the "Outlook Contacts to FritzBox" tab, use the "Select CSV input file" button to select the file exported from Outlook.
   
• Use the "Select XML output file" button to select the output file containing the converted contacts.
   
• Click the "Start Conversion" button.
   
• The log window is displayed next to the main window and the converted contacts are logged there. Check for any error and warning messages. If necessary, correct any incorrect contact data in Outlook and export it again.
   
• If you are satisfied with the conversion result, you can import the generated XML file into the Fritzbox as described here.