Overview
For user validation, inSync uses the ObjectGUID attribute of an Active Directory user. This article demonstrates how to fetch the ObjectGUID from Active Directory and change the format of the GUID into a hexadecimal format that inSync uses.
Procedure title
Enable Advanced Features in Active Directory Users and Computers.
Open the Admin Properties dialog of the Active Directory user whose objectGUID you want to find.
Click the Attribute Editor tab. The objectGUID value of the user is listed. Copy the objectGUID of this user.
Convert the objectGUID into a hexadecimal format that inSync uses. Use an online GUID converter to convert the ID.
Example: https://toolslick.com/conversion/data/guid