I've recently required a mess...!!

The last admin introduced a second Exchange 2000 server into our production
enviornment for testing "something". It has no maiboxes and as far as I can
tell does absolutely nothing! I tried un-installing it from add/remove
programs and I get the following errors:

It basically fails on Forest Prep, Domain Prep and un-installing a copy of
5.5 Console.

I ran a manual ForestPrep and DomainPrep and it came back fine, not sure why
I get these messages below:


Setup failed while (error 0x8000FFFF: An unexpected error occurred.) .

Additional information:
An unexpected error occurred.

ID no: 8000ffff
Microsoft Exchange Setup


Function:
CComExchSetupComponent::HrPromptForCDIfNecessary
CComExchSetupComponent::Install

Domain Prep:

Setup failed while (error 0x8000FFFF: An unexpected error occurred.) .

Additional information:
An unexpected error occurred.

ID no: 8000ffff
Microsoft Exchange Setup


Function:
CComExchSetupComponent::HrPromptForCDIfNecessary
CComExchSetupComponent::Install

MS Exchange 5.5 Admin:

Setup failed while (error 0x8000FFFF: An unexpected error occurred.) .

Additional information:
An unexpected error occurred.

ID no: 8000ffff
Microsoft Exchange Setup


Function:
CComExchSetupComponent::HrPromptForCDIfNecessary
CComExchSetupComponent::Install

Archived from group: microsoft>public>exchange2000>win2000