If you are running the Setup program from a virtual drive created by using the SUBST command, you can delete the virtual drive and instead run the Setup program from the physical hard disk. To delete the virtual drive, click Start, click Run, type subst drive_letter: /d, and then click OK.
Register Idriver and Msiexec
To register Idriver and Msiexec, follow these steps:
Click Start, click Run, type "C:\Program Files\Common Files\InstallShield\Driver\<version number>\Intel 32\IDriver.exe" /REGSERVER, and then click OK.
Note The <version number> varies in different computers. It depends on the version of the InstallScript engine.
Click Start, click Run, type C:\Windows\System32\msiexec.exe /REGSERVER, and then click OK.
Log on to the Windows XP computer with an administrator user account, and verify that you have the correct permissions for the C:\Windows\Installer folder. Follow these steps:
Click Start, click All Programs, point to Accessories, and then click Windows Explorer.
Click Folder Options on the Tools menu.
Click the View tab.
Click Show hidden files and folders, and then click OK.
Locate the folder C:\Windows\Installer.
Right-click the Installer folder, and then click Properties.
Click the Security tab.
Click System, and then verify that the Full control check box is selected.
Click Administrators, and then verify that the Full control check box is selected.
Click your user name, and then verify that the Full control check box is selected.
Stop other instances of Windows Installer
To stop other instances of Windows Installer, follow these steps:
Right-click the taskbar, and then click Task Manager.
Click the Processes tab.
Click Msiexec.exe in the Processes list, and then click End Process.
Repeat steps 3 and 4 for each instance of Msiexec.exe.
Close Task Manager.
Reinstall Windows XP
For more information about reinstalling Windows XP, click the following article number to view the article in the Microsoft Knowledge Base:
978788How to perform an in-place upgrade (reinstallation) of Windows XP
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