If you install the IDMU Administration Pack on Windows XP Professional, use Control Panel / Add or Remove Programs to remove it, and re-install the IDMU Administration Pack, you cannot use Control Panel / Add or Remove Programs to remove it again, because of a problem in the IDMU Administration Pack installer.
To workaround this behavior:
1. Open a CMD.EXE window.
2. Type the following commands, pressing Enter after each line:
cd /d %windir%\Idmusnap
regsvr32 /s /u nisprop.dll
del /q /f /s *.*
3. Delete the registry sub-key:
For x86-based Windows XP
REG DELETE "HKLM\SOFTWARE\Microsoft\Updates\Windows XP\SP<number>\idmu" /FWhere <number> is your current service pack number.
For x64-based Windows XP
REG DELETE "HKLM\SOFTWARE\Microsoft\Updates\Windows XP Version 2003\SP<number>\idmu" /FWhere <number> is your current service pack number.
NOTE: Every time you remove the IDMU Administration Pack, you must delete the IDMU registry sub-key.