How to fix the “windows installer service could not be accessed” error while installing an application

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When you try to lớn install a program in Windows 7 or Windows Vista, you receive the following error message:

"The Windows Installer Service could not be accessed. This can occur if the Windows Installer is not correctly installed. Liên hệ your personnel for assistance."


To resolve this issue, use Method 1. If Method 1 does not resolve the issue, use the next method that is listed until you resolve the issue.

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Important This section, method, or task contains steps that tell you how to lớn 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 khổng lồ back up & restore the registry, click the following article number to lớn view the article in the Knowledge Base: 322756 How to back up và restore the registry in WindowsTo reset the Windows Installer Service settings in the registry, create a registry tệp tin by using Notepad. Then, run the tệp tin to update the registry key. To vày this, follow these steps:

Click Start, & then type Notepad in the Search box.

Under the Programs heading, click Notepad.exe.

Copy the following text, và then paste it into a notepad: 

Windows Registry Editor Version 5.00 "DisplayName"="
%SystemRoot%\system32\msimsg.dll,-27""ImagePath"=hex(2):25,00,73,00,79,00,73,00,74,00,65,00,6d,00,72,00,6f,00,6f,00, 74,00,25,00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,6d, 00,73,00,69,00,65,00,78,00,65,00,63,00,20,00,2f,00,56,00,00,00"Description"="
%SystemRoot%\system32\msimsg.dll,-32""ObjectName"="LocalSystem""ErrorControl"=dword:00000001"Start"=dword:00000003"Type"=dword:00000010"DependOnService"=hex(7):72,00,70,00,63,00,73,00,73,00,00,00,00,00"ServiceSidType"=dword:00000001"RequiredPrivileges"=hex(7):53,00,65,00,54,00,63,00,62,00,50,00,72,00,69,00,76, 00,69,00,6c,00,65,00,67,00,65,00,00,00,53,00,65,00,43,00,72,00,65,00,61,00, 74,00,65,00,50,00,61,00,67,00,65,00,66,00,69,00,6c,00,65,00,50,00,72,00,69, 00,76,00,69,00,6c,00,65,00,67,00,65,00,00,00,53,00,65,00,4c,00,6f,00,63,00, 6b,00,4d,00,65,00,6d,00,6f,00,72,00,79,00,50,00,72,00,69,00,76,00,69,00,6c, 00,65,00,67,00,65,00,00,00,53,00,65,00,49,00,6e,00,63,00,72,00,65,00,61,00, 73,00,65,00,42,00,61,00,73,00,65,00,50,00,72,00,69,00,6f,00,72,00,69,00,74, 00,79,00,50,00,72,00,69,00,76,00,69,00,6c,00,65,00,67,00,65,00,00,00,53,00, 65,00,43,00,72,00,65,00,61,00,74,00,65,00,50,00,65,00,72,00,6d,00,61,00,6e, 00,65,00,6e,00,74,00,50,00,72,00,69,00,76,00,69,00,6c,00,65,00,67,00,65,00, 00,00,53,00,65,00,41,00,75,00,64,00,69,00,74,00,50,00,72,00,69,00,76,00,69, 00,6c,00,65,00,67,00,65,00,00,00,53,00,65,00,53,00,65,00,63,00,75,00,72,00, 69,00,74,00,79,00,50,00,72,00,69,00,76,00,69,00,6c,00,65,00,67,00,65,00,00, 00,53,00,65,00,43,00,68,00,61,00,6e,00,67,00,65,00,4e,00,6f,00,74,00,69,00, 66,00,79,00,50,00,72,00,69,00,76,00,69,00,6c,00,65,00,67,00,65,00,00,00,53, 00,65,00,50,00,72,00,6f,00,66,00,69,00,6c,00,65,00,53,00,69,00,6e,00,67,00, 6c,00,65,00,50,00,72,00,6f,00,63,00,65,00,73,00,73,00,50,00,72,00,69,00,76, 00,69,00,6c,00,65,00,67,00,65,00,00,00,53,00,65,00,49,00,6d,00,70,00,65,00, 72,00,73,00,6f,00,6e,00,61,00,74,00,65,00,50,00,72,00,69,00,76,00,69,00,6c, 00,65,00,67,00,65,00,00,00,53,00,65,00,43,00,72,00,65,00,61,00,74,00,65,00, 47,00,6c,00,6f,00,62,00,61,00,6c,00,50,00,72,00,69,00,76,00,69,00,6c,00,65, 00,67,00,65,00,00,00,53,00,65,00,41,00,73,00,73,00,69,00,67,00,6e,00,50,00, 72,00,69,00,6d,00,61,00,72,00,79,00,54,00,6f,00,6b,00,65,00,6e,00,50,00,72, 00,69,00,76,00,69,00,6c,00,65,00,67,00,65,00,00,00,53,00,65,00,52,00,65,00, 73,00,74,00,6f,00,72,00,65,00,50,00,72,00,69,00,76,00,69,00,6c,00,65,00,67, 00,65,00,00,00,53,00,65,00,49,00,6e,00,63,00,72,00,65,00,61,00,73,00,65,00, 51,00,75,00,6f,00,74,00,61,00,50,00,72,00,69,00,76,00,69,00,6c,00,65,00,67, 00,65,00,00,00,53,00,65,00,53,00,68,00,75,00,74,00,64,00,6f,00,77,00,6e,00, 50,00,72,00,69,00,76,00,69,00,6c,00,65,00,67,00,65,00,00,00,53,00,65,00,54, 00,61,00,6b,00,65,00,4f,00,77,00,6e,00,65,00,72,00,73,00,68,00,69,00,70,00, 50,00,72,00,69,00,76,00,69,00,6c,00,65,00,67,00,65,00,00,00,53,00,65,00,4c, 00,6f,00,61,00,64,00,44,00,72,00,69,00,76,00,65,00,72,00,50,00,72,00,69,00, 76,00,69,00,6c,00,65,00,67,00,65,00,00,00,00,00"FailureActions"=hex:84,03,00,00,00,00,00,00,00,00,00,00,03,00,00,00,14,00,00, 00,01,00,00,00,c0,d4,01,00,01,00,00,00,e0,93,04,00,00,00,00,00,00,00,00,00 "0"="Root\LEGACY_MSISERVER\0000""Count"=dword:00000001"NextInstance"=dword:00000001 Click File
, click Save As, and then name the tệp tin Msirepair.reg.

In the Save as type box, click All Files (*.*).

In the Save in box, click Desktop, and then click Save.

On the File menu, click Exit to close notepad.

On the Desktop, right-click Msirepair.reg, & then click Run as administrator. If you are prompted khổng lồ enter an administrator password or provide confirmation, type the password, or click Continue.

Click Yes when you are prompted to lớn install the registry keys.

Restart the installation process for the program that you want to lớn install.

To start the Windows Installer Service, follow these steps:

Click Start, & then type CMD in the tìm kiếm programs và files dialog box.


Right-click cmd.exe, and then click Run as Administrator.


Type net start MSIServer, & then press ENTER.

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Restart the installation process for the program that you want to install.

To check that the Windows Installer Service is running, follow these steps:

Click Start, type services.msc in the Search box, & then click Services under the Programs heading.

In the Services (Local) list, right-click Windows Installer, và then click Properties.

In the Startup type drop-down list, kiểm tra that the value is set khổng lồ Manual.

The Windows Installer Service is running if the Service status: entryis set to lớn Running.

If an earlier version of the program that you want lớn install is already installed on the computer, follow these steps: 

Click Start, click Control Panel, and then click Uninstall a Program under Programs.

Select the program in the danh mục that you want to lớn install.

Click Uninstall (or Uninstall/Change in Windows Vista), and then follow the instructions or prompts lớn uninstall the application.

Restart the computer.

Restart the installation process for the program that you want khổng lồ install.

This issue occurs when one or more of the following conditions are true:

You install or remove a program that uses the Installer Service before you try khổng lồ install the program on your computer.

The Windows Installer Service is not running.

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The Windows Installer registry settings are corrupted or configured incorrectly.

For more information about this issue in Windows XP và Windows server 2003, click the following number lớn view the article in the Knowledge Base:

315346 Error message when you try to địa chỉ or remove a program on a computer that is running Windows XP or Windows server 2003: "The Windows Installer service could not be accessed"