DCOM 10016 Errors with SharePoint 2007 and Windows Server 2008 R2

It seems that by default SharePoint 2007 has some DCOM/IIS related issues on Windows Server 2008 R2.  I've run into this error multiple times on multiple servers:

EVENT ID: 10016
SOURCE: DistributedCOM
The application-specific permission settings do not grant Local Activation permission for the COM Server application with CLSID



COM+ and DCOM Troubleshooting

DCOM. I'm sure it sounded like a good idea at the time, but in the real world it generates a lot of headaches. Here's some common DCOM, COM+ and WMI errors along with some fixes. There's also some scripts and registry keys at the end of article to help automate the fixes.

CoCreateInstance Errors

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