Outlook 2010

[Ycguy1117]

For some reason lost all contacts . Nothing else but contacts

 

[neeyik]

Lots of web pages on this matter:

Recover a deleted contact in Outlook - Microsoft Support

Learn how to recover deleted contacts in Outlook 2010, Outlook 2013, or Outlook 2016 for Windows. You can also recover contacts from a deleted subfolder.

support.office.com

How to Retrieve Deleted Contacts in Outlook 2010 Without Any Data Loss?

Retsore or retrieve deleted contacts in Outlook 2010, 2013, 2016 without any data loss. Explore this how guide to recover deleted contact group in Microsoft Outlook.

www.systoolsgroup.com

What to do When Your Contacts are Missing in Outlook

If you just upgraded your Outlook version and find that your Outlook Contacts are missing from your Outlook Address book, don’t worry! You can fix it.

lookeen.com