Office 2003 will leave lots of remnants behind which can cause future versions of office to not function correctly, especially with MAPI and outlook 2003. Follow this to ensure all of Office 2003 is removed.
1. Uninstall Office 2003 using Add/Remove Programs from the Control Panel
2. Click Start menu-> Run, type
“regedit” (without the quotation marks) in the Open box and press Enter.
3. Back up and Delete the following registry keys if they exist:
(Note: ‘#’ represents any number {0-9, A-F})
HKEY_CLASSES_ROOTInstallerComponents
HKEY_CLASSES_ROOTInstallerProducts904###0900063D11C8EF10054038389C
HKEY_CLASSES_ROOTInstallerFeatures904###0900063D11C8EF10054038389C
HKEY_CLASSES_ROOTInstallerPatches
HKEY_CURRENT_USERSoftwareMicrosoftInstallerComponents
HKEY_CURRENT_USERSoftwareMicrosoftInstallerFeatures904###0900063D11C8EF10054038389C
HKEY_CURRENT_USERSoftwareMicrosoftInstallerProducts904###0900063D11C8EF10054038389C
HKEY_CURRENT_USERSoftwareMicrosoftInstallerPatches
HKEY_CURRENT_USERSoftwareMicrosoftOffice
HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionInstallerProducts904###0900063D11C8EF10054038389C
HKEY_LOCAL_MACHINESOFTWAREClassesInstallerComponents
HKEY_LOCAL_MACHINESOFTWAREClassesInstallerFeatures904###0900063D11C8EF10054038389C
HKEY_LOCAL_MACHINESOFTWAREClassesInstallerPatches
HKEY_LOCAL_MACHINESOFTWAREClassesInstallerProducts904###0900063D11C8EF10054038389C
HKEY_LOCAL_MACHINESOFTWAREMicrosoftOffice
HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionInstallerProducts904###0900063D11C8EF10054038389C
KEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionInstallerUserDataS-#-#-##Products904###0900063D11C8EF10054038389C
HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionUninstall9###0409-6000-11D3-8CFE-0150048383C9
4. Quit the Registry Editor.
5. Delete or rename the following folders if they exist:
C:Program FilesMicrosoft Office
C:Program FilesCommon FilesMicrosoft SharedOffice9
C:Program FilesCommon FilesMicrosoft SharedOffice10
C:Program FilesCommon FilesMicrosoft SharedOFFICE11
C:Documents and Settings<UserName>Application DataMicrosoftOffice
C:Documents and SettingsAll UsersApplication DataMicrosoftOffice
C:Program FilesOfficeUpdate
C:Program FilesOfficeUpdate11
2. Click Start menu-> Run, type
“regedit” (without the quotation marks) in the Open box and press Enter.
3. Back up and Delete the following registry keys if they exist:
(Note: ‘#’ represents any number {0-9, A-F})
HKEY_CLASSES_ROOTInstalle
HKEY_CLASSES_ROOTInstalle
HKEY_CLASSES_ROOTInstalle
HKEY_CLASSES_ROOTInstalle
HKEY_CURRENT_USERSoftware
HKEY_CURRENT_USERSoftware
HKEY_CURRENT_USERSoftware
HKEY_CURRENT_USERSoftware
HKEY_CURRENT_USERSoftware
HKEY_CURRENT_USERSoftware
HKEY_LOCAL_MACHINESOFTWAR
HKEY_LOCAL_MACHINESOFTWAR
HKEY_LOCAL_MACHINESOFTWAR
HKEY_LOCAL_MACHINESOFTWAR
HKEY_LOCAL_MACHINESOFTWAR
HKEY_LOCAL_MACHINESOFTWAR
KEY_LOCAL_MACHINESOFTWARE
HKEY_LOCAL_MACHINESOFTWAR
4. Quit the Registry Editor.
5. Delete or rename the following folders if they exist:
C:Program FilesMicrosoft Office
C:Program FilesCommon FilesMicrosoft SharedOffice9
C:Program FilesCommon FilesMicrosoft SharedOffice10
C:Program FilesCommon FilesMicrosoft SharedOFFICE11
C:Documents and Settings<UserName>Applic
C:Documents and SettingsAll UsersApplication DataMicrosoftOffice
C:Program FilesOfficeUpdate
C:Program FilesOfficeUpdate11
6. To remove MAPI, search for and rename the following files/folders if they exist:
C:Windowssystem32mapi32
C:Windowssystem32mapisv
C:Program FilesCommon FilesSystemMsmapi
C:Program FilesCommon FilesSystemMapi
7. Click Start->Run, type
“%Temp%” (without the quotation marks) in the Open box and press Enter,
delete everthing in the %Temp% folder.
8. Empty the Recycle Bin.
9. Restart your computer and then install office 2003