Error "Invalid Class String"

[maddtax]

When I click on "Address Book" in Outlook I get the error message: Creating
Instance of Com Object, "Invalid Class string". Does anyone know how to keep
this error message from occuring? Thank you for any help you can give me.

 

[Oliver Vukovics [Public Shareware]]

Hi Terry,

what did you do? Do you get this error from one moment to the other or did
you install a software?

Your Outlook version is?
Do you have any "Addins" (3rd party tools) installed.

I prefer to remove the addressbook and add it again.
http://office.microsoft.com/en-us/outlook/HP052426341033.aspx

Maybe it helps.