I am trying to install Exchange Server SP2 and SP3 but get the following
error message while it's modifying the registry:
No mapping between account names and security IDs was done.
Microsoft Windows NT ID no: 0x0020534
Now while it says the upgrade failed, the version shows Service Pack 2 has
Installing Service Pack 3 then gives me this error:
This version of Exchange Setup can only upgrade servers that are 4.0a/SP2.
Can anyone help me to resolve this issue? I'd appreciate any help.