While browsing Component Services, when I clicked on DCOM Config, a popup warning box appeared mentioning my antivirus software, namely an Avast executable - AvastVBoxSVC.exe:

Warning message:
"The CLSID {....}, item C:\ [folder paths snipped] \AvastVBoxSVC.exe and title VirtualBoxASW Class has the named value AppID, but is not recorded under \\HKEY_CLASSES_ROOT\AppID. Do you wish too record it?" (Yes and No button options provided.)

I decided to click No, but wondered if that was the right thing to do, as I don't understand the warning message. (I was asked this same question twice, and clicked No both times.) Thanks for any comments on this issue.