Quick Tip- Error Installing Exchange Server 2016, "this user isn’t a member of the ‘Schema/Ente

While preparing schema for Exchange Server 2016, I got the below error

"this user isn’t a member of the ‘Schema/Enterprise Admins’ groups."

Error snapshot below:

I added the user in Enterprise admin and Schema admin group and re-executed the command, but landed with same error.

While checking properties for user account in active directory, noticed that primary group still set to domain users.

I changed the primary group to Enterprise Admin and restarted the server.

Executed the same command and issue got resolved.