29 Jun 2012

“The Windows Installer service could not be accessed” error message when you try to install Office

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Thanks to Microsoft, works ever time:
To resolve this problem, use one of the following methods.

Method 1: Use the Msconfig tool to confirm that the installer service is running

  1. Click Start, and then click Run.
    Start menu
  2. In the Open box, type msconfig, and then click OK.
    Run dialog box
  3. On the Services tab, click to select the check box that is next to Windows Installer .
    System Configuration Utility dialog box
  4. Click OK, and then click Restart to restart the computer.
    System Configuration dialog box
  5. Install Office again. When you are prompted to enter the product key, type the product key, and then click Next.

Office will be installed, and you will not be prompted for the product key when the programs start.

Method 2: Re-register Windows Installer

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

 

Note Because there are several versions of Microsoft Windows, the following steps may be different on your computer. If they are, see your product documentation to complete these steps.

To re-register Windows Installer, follow these steps.

Note If you cannot complete the following steps, go to method 3.

  1. Click Start, and then click Search.
    Start menu
  2. Click All files and folders.
    Search form
  3. In the File name box, type Msiexec.exe, and then click Search.
    Search form
  4. After the search is complete, make a note of the location of the Msiexec.exe file. The location of the file should be similar to the following example:
    C:\Windows\System32
    Search Results form
  5. On the File menu, click Close to close the Search dialog box.
    File menu
  6. Click Start, and then click Run.
    Start menu
  7. In the Open box, type regedit, and then click OK.
    Run dialog box
  8. Locate and then click the following registry key:
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSIServer
    Registry Editor
  9. In the right pane of the Registry Editor window, double-click ImagePath.
    Run dialog box
  10. In the Edit String dialog box that appears, make sure that the string in the Value data box contains the correct path for the Msiexec.exe file that you determined in step 4.Note The following is an example of the correct path, where drive is the drive where Windows is installed:
    drive :\Windows\System32\msiexec.exe /V

    If the Value data box does not contain the correct path, make changes to correct the path, and then click OK to close the Edit String dialog box.

    Run dialog box
  11. On the File menu, click Exit to quit Registry Editor.
    File menu
  12. Start your computer in Safe mode, and then register the Msiexec.exe file. To do this, follow these steps:
    1. Shut down your computer, and then restart your computer.
    2. Restart your computer and press the F8 key on your keyboard. On a computer that is configured for booting to multiple operating systems, press the F8 key when you see the Boot menu.
    3. Use the ARROW keys to select Safe Mode, and then press ENTER.
    4. If the Boot menu appears again, and the words “Safe Mode” appear in blue at the bottom, select the installation that you want to start, and then press ENTER.
    5. Log on to the computer.
    6. Click Start, click Run, type msiexec /regserver in the Open box, and then click OK.
      Run dialog box
  13. Shut down your computer, and then restart your computer normally.

If you still cannot install Microsoft Office successfully and you receive an error message that is similar to the message listed in the “Symptoms” section, go to Method 3.

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