This can occur if you are running Windows in safe
mode, or if the Windows Installer is not correctly
installed. Contact your support personnel for assistance.
- You are using Windows XP in Normal mode.
- The Windows Installer Service that is included with Windows XP is unregistered or damaged.
- Log on to your computer as an administrator.
- Click Start, and then click
- In the Open box, type
cmd, and then click OK.
- At the command prompt, typemsiexec.exe /unregister, and then press ENTER.
- Type msiexec /regserver, and then press ENTER.
- Verify that the SYSTEM account has full control access permissions to the HKEY_CLASSES_ROOT hive in the Windows registry. In some cases, you may also have to add Administrator accounts. To do so:Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base: 322756 How to back up and restore the registry in Windows
- Click Start, click
Run, type regedit in the
Open box, and then click OK.
- Click the following registry hive:HKEY_CLASSES_ROOT
- On the Edit menu, click
- If SYSTEM is not listed in the
Group or user names list, click Add, make sure that the local computer name appears in the From this location box, type system in the Enter the object names to select box, click Check Names, and then click OK.
- Click SYSTEM in the Group or user names list, and then select the Full Control check box under Allow in the Permissions for SYSTEM box.
- Click Apply, click
OK, and then quit Registry Editor.
- Click Start, click
- Restart the computer. If the problem is not resolved, repair Windows XP.
For more information about how to repair Windows XP, click the following article number to view the article in the Microsoft Knowledge Base:978788 How to perform an in-place upgrade (reinstallation) of Windows XP
Article ID: 315353 - Last Review: Feb 12, 2014 - Revision: 1