Our (ASP.Net) application has to talk to an LDAP/Active Directory server for verifying user groups. Now several members of our team need to be able to work disconnected.
Is there a way to set up a local LDAP server on the development machine (Windows 7 Pro)?
Microsoft ADAM will probably work. As far as I know, it's only officially supported on Windows Pro up through XP, but there's a decent chance it'll work on Windows 7 as well. If it doesn't, another possibility to look at would be OpenLDAP.
ADAM is now called Active Directory Lightweight Directory Services, and was just published in a Windows 7 version, too - download it here:
AD LDS is the best solution for local LDAP development - it allows you to start and stop your AD instances at will (it runs as a Windows service), and you can even have multiple copies running.
Check out more about AD LDS in Technet or MSDN library