I'm getting MANY entries of the above error on my SBS 2003 Server for multiple users. I've installed the fix from KB article 873375 and it now seems WORSE. KB article 187146 is also relevant and the registry key in question does not exist. I would like to use this as a possible fix but I am not sure where to get the class identifier that is mentioned. see below. Can any one tell me where I can find the Class ID so that I can test this as a possible solution? thanks. KB 187146 excerpt: To explicitly register a DCOM class as a system global, use the following steps: 1. If it does not exist, create the following registry key: HKLM\Software\Microsoft\Windows NT\CurrentVersion\Terminal Server\Compatibility\CLSID 2. Create a subkey with {CLSID} as its name, where the CLSID is the class identifier of the DCOM class that is to be a system global. For example, a subkey would be: {41116C00-8B90-101B-96CD-00AA003B14FC} 3. Under the above subkey, create fSystemGlobalClass as the value name with a REG_DWORD type and set its value data to 1.