This article was previously published under Q315353
When you try to install a
program, such as Microsoft Plus! for Windows XP or Microsoft
Office 2003, in Microsoft Windows XP, you may receive the following error
The Windows Installer Service could not be
This can occur if you are running Windows in safe
if the Windows Installer is not correctly
installed. Contact your support
personnel for assistance.
This issue may occur when both the following conditions are true:
- You are using Windows XP in Normal mode.
- The Windows Installer Service that is included with Windows
XP is unregistered or damaged.
To resolve this issue, follow these steps:
- 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
- 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:
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:
- 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
- Click Apply, click
OK, and then quit Registry Editor.
- 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:
How to perform an in-place upgrade (reinstallation) of Windows XP
Article ID: 315353 - Last Review: May 22, 2013 - Revision: 5.0
- Microsoft Windows XP Professional
- Microsoft Windows XP Home Edition
- Microsoft Office Outlook 2003
- Microsoft Office PowerPoint 2003
- Microsoft Office Publisher 2003
- Microsoft Office Professional Edition 2003
- Microsoft Office Small Business Edition 2003
- Microsoft Office Basic Edition 2003
- Microsoft Office Access 2003
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