Solving 10016 events under 2008 R2

From as long as i can remember, if you use a specific farm account, sharepoint doesnt grant it local activation for the IISWAMREG component, thus making 10016 and 10017 warnings appear in the system log.

Under windows 200x, the resolution is quite simple (grant local activation rights to wss_wpg for the component, as per http://support.microsoft.com/kb/920783)

Under 2008 R2, the "edit" button is greyed.

That's because the ownership of the corresponding registry key is to "trusted_installer", not you (even as admin). Go to the key and take possession of it, and the edit button will be enabled.

The key used by the IIS WAMREG admin is:

HKEY_CLASSES_ROOT\AppID\{61738644-F196-11D0-9953-00C04FD919C1}

(Do not remove trusted installer rights)