Adding Windows Authentication (Navision xp_ndo.dll error)

When installing a fresh instance of NAV and you want Windows Authentication

(in stead of the not-so reccomended SQL login..)

I found a reputable link to resolve the .dll problem in the installation process.

source: msdn blogger Lohndorf 

USE master

GO
EXEC sp_addextendedproc xp_ndo_enumusersids, 'C:\Data\xp_ndo_x64.dll'
GRANT EXECUTE ON [xp_ndo_enumusersids]
TO PUBLIC
GO
USE master
EXEC sp_addextendedproc xp_ndo_enumusergroups, 'C:\Data\xp_ndo_x64.dll'
GO
GRANT EXECUTE
ON [xp_ndo_enumusergroups] TO PUBLIC
GO
-- then go to the folder you have it sitting in and give NETWORK SERVICE permission.