Hi While configuring the SharePoint 2013, getting the following error. 

System.InvalidOperationException: An error occurred while getting information about the user sp_farm at server <ADserver>: Access is denied
   at Microsoft.SharePoint.Win32.SPNetApi32.NetUserGetInfo1(String server, String name)

sp_farm is a Domain User, and local admin, for SQL server this account have sysadmin rights, still having the issue please help. 

Basically SharePoint is trying to get information about this service account and access is denied. This is because you may be logged in on server and running Products and Configuration Wizard as a local user that does not have access to the AD OU to verify the SP_Farm domain account.

Log out from sever and Log in again with "SP_Farm" user  and re-launch the SharePoint Products and Configuration Wizard. Specify the SP_Farm account to connect to the SQL Database.Before you run the config wizard , please log in to SQL Management Studio and remove the partially created farm database SharePoint_Config or use a different name the second time.