Server 2008 ADPrep Errors when preparing a 2003 Based Domain... - Adprep was unable to complete because the call back function failed.
"""""
Updating change from:" International ISDN Number (Others)" to "International ISDN Number (Others)" for locale 409, object inetOrgPerson-Display and property attributeDisplayNames.
Adprep was unable to complete because the call back function failed.
[Status/Consequence]
Error message: C:\WINDOWS\debug\adprep\logs\20080903175259\LDIF.log The process cannot access the file because it is being used by another process.
(0x80070020).
[User Action]
Check the log file ADPrep.log, in the C:\WINDOWS\debug\adprep\logs\20080903175259 directory for more information.
Adprep was unable to update forest information.
[Status/Consequence]
Adprep requires access to existing forest-wide information from the schema master in order to complete this operation.
[User Action]
Check the log file, ADPrep.log, in the C:\WINDOWS\debug\adprep\logs\20080903175259 directory for more information.
""""""
So, what the hell does this error mean and why does it occur when you are running it on the Schema Master, with the Domain Administrator account, with nothing obvious to look at....and the log files are about as useful as my.....well......something useless....
Surprise Surprise - its McAfee 8.5i Enterprise edition that causes this, simply uninstall...run your adprep tools, and reinstall...
Such a simple solution for such a PITA non obvious issue...
Enjoy