AD Users not recognized in SharePoint?

October 6th, 2008 | Categories: SharePoint, SharePoint administration

Not long ago we’ve had a situation where the newly created users in Active Directory couldn’t be recognized to add them in SharePoint.

The whole topology was the following:

1 server as Primary Domain Controller for domain
2 server as secondary Domain Controller for same domain and for hosting SharePoint

Each on its own external line and connected between themselves with VLAN.

The trouble was that the users that were created in AD (on any DC) couldn’t be recognized in WSS. We could add them to SharePoint some 30-180 minutes later.

It turned out that the problem was the firewall between the servers in VLAN. As soon as we fixed that the problem was resolved.

If firewall isn’t the problem, you can also set the secondary DC as Global catalog.