After applying the core update to 4.9 and using the AD provider 1.04 I get a strange error on the Admin/Authentication page:

An error has occurred.
Error: is currently unavailable.

I cannot make any changes to the settings and if I remove DNN authentication, AD authentication does not work at all.  Any suggestions?

This is part of what the event viewer had:

Method: DotNetNuke.Authentication.ActiveDirectory.ADSI.Utilities.AddADSIPath
StackTrace:
Message: DotNetNuke.Services.Exceptions.ModuleLoadException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object.at DotNetNuke.Authentication.ActiveDirectory.ADSI.Utilities.AddADSIPath(String Path, Path ADSIPath)at DotNetNuke.Authentication.ActiveDirectory.ADSI.Utilities.GetRootEntry(Path ADSIPath)at DotNetNuke.Authentication.ActiveDirectory.ADSI.ADSIProvider.GetNetworkStatus()at DotNetNuke.Authentication.ActiveDirectory.Settings.UpdateSettings()--- End of inner exception stack trace ---

Ah, yes, I forgot to put that line back in my web.config file.  identity impersonate="true" />

That fixed the error.  Now, I have to double-check to see if the latest version of the AD provider is still updating my AD/DNN groups.  Thanks Mike!

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