UPDATE: We have now released the hotfix that corrects this issue for Exchange 2003 SP2. The article is: 930241 The Exchange 2003 database does not mount, and event IDs 9518 and 9519 are logge...
Updated Jul 01, 2019
Version 2.0
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Derek, If you're reading KB930879, I'm reading it the same as you. I just got done running the Calendar Update Tool on my BE servers (saw both the 0x8004011D and 0x80004005 errors) and plan on running the CDO patch tomorrow night.
If all goes horribly awry, MS does offer "server down critical LAN outages or escalated, "business down" customer situations." If the patches mess you up, go to the source for assistance.
See: https://partner.microsoft.com/US/program/programoverview/40023584
https://partner.microsoft.com/US/program/programoverview/40023584 and look under "Support My Customers." You will need to sign up as a Registered Member (if you're not already) but the assistance is well worth it (IMO).
Good luck to all.