I recently installed AD FS on my domain controllers to implement SSO with Office 365. After setup and installation, the DC's stopped replicating and DNS was not resolving. Users were unable to authenticate to Exchange and other network servers. I uninstalled AD FS from Programs and Features, and I restored IIS following the instructions found at:
How to restore IIS and clean up Active Directory
I'm still having issues with AD not replicating. I'm stuck, and my users keep getting login dialog boxes and disconnecting from Exchange while in Outlook. Anyone have any ideas?