The Windows Installer service could not be accessed

When trying to install or uninstall programs, you receive the following error message
displayed:


Error 1719.
The Windows Installer service was not accessible.



This can occur when Windows is running in Safe Mode or when the
Windows Installer was not installed correctly.
Or if a program is installed that uses the Windows Installer's MSI package file (.msi).

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How do I install the program anyway?

Enter the following commands one after the other under Start >> Execute and confirm each one with OK.

  • msiexec / unregister
  • msiexec / regserver


If it still doesn't work after this, we have to do the whole thing on foot.

Start >> Run.
Enter the file name regedit in the Open field and then click OK.
Find the following registry key:
HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ MSIServer

Double-click in the right window ImagePath.

wininstaller1.png

The string in the Value data box of the String dialog box must be the correct path to the
Msiexec.exe file included.
The correct path is as follows (where C: \ Windows is the installation directory on which Windows is installed):
C: \ Windows \ System32 \ msiexec.exe / V

wininstaller2.png

Quit RegEdit
Now the computer has to be in the safe mode restarted and the file Msiexec.exe be re-registered.

To do this, press the [F8].
In the Advanced Windows Startup Options menu that appears, use the arrow keys to select Safe Mode, then press [Enter key].
If you have a dual-boot or multi-boot system installed on your computer, select Microsoft Windows XP from the list that appears and then press [Enter].

After the system has booted go to Start >> Run again.
Enter the following line in the Open field and then click OK:
msiexec / regserver

Shut down the computer and then restart it in normal mode.


See also the tip for Windows Vista:
Vista - The Windows Installer service could not be accessed

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This tip is from www.win-tipps-tweaks.de
© Copyright Michael Hille

Warning:

Using Registry Editor or its tips incorrectly can cause serious problems:
which affect the entire system and require a new installation of the operating system.
Tampering with the registry files and using the tips is at your own risk.