81. Solve “Error 1719:The Windows Installer service could not be accessed”(From MS KB) Method 1: Re-register the Windows Installer

To re-register the Windows Installer, verify the location of the Msiexec.exe file on your hard
disk and in the Windows Registry, and then re-register the Windows Installer. To do so:

1. Verify the location of the Msiexec.exe file on your hard disk. To do so:

Start Search (All files and folders)type msiexec.exe ||Click Search.

In the search results, make a note of the location of the Msiexec.exe file. The location of the
Msiexec.exe file should be similar to the following example, where Drive is the drive where
Windows is installed, and %Windir% is the folder where Windows is installed:
Drive:\%Windir%\System32. An example of this is C:\Windows\System32. In Microsoft
Windows 98-based computers, the Msiexec.exe file is located in the
Drive:\%Windir%\System folder. On the File menu, click Close.

2. Verify the location of the Msiexec.exe file in the Windows Registry. To do so:

Locate, and then click the following registry key:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSIServer. In the right
pane, double-click ImagePath. In the Edit String dialog box, make sure that the string in the
Value data box contains the correct path of the Msiexec.exe file on your hard disk that you
determined earlier in step 1.

For example, if the Msiexec.exe file is located in the Drive:\Windows\System32 folder on
your hard disk, the correct path of the Msiexec.exe file in the Value data box is the following
path, where Drive is the drive where Windows is installed:

Drive:\Windows\System32\Msiexec.exe /V

Note If you are using Windows 98, the correct path of the Msiexec.exe file is
Drive:\Windows\System\Msiexec.exe /V. If the Value data box does not contain the correct
path, make the appropriate changes to correct the path, and then click OK. Quit Registry
Editor.

3. Start your computer in safe mode, and then register the Msiexec.exe file. To do so:

Press F8 after you receive the following message. On the Windows Advanced Option menu,
use the arrow keys to select Safe Mode, and then press ENTER. If you use a dual-boot or
multiple-boot computer, select the appropriate operating system from the list that is
displayed, and then press ENTER. Log on to the computer. Click Start,, click Run, type the
following line, and then click OK: “msiexec /regserver” {Without quotes}

Note For 64-bit operating systems, you also need to reregister the 64-bit MSI installer. To do
this, click Start, click Run, type the following line, and then click OK:
Drive:\Windows\Syswow64\Msiexec /regserver. On 64-bit editions of a Windows operating
system, 32-bit binaries are located in %systemroot%\SysWow64 folder. 64-bit binaries are
located in the %systemroot%\System32 folder

4. Shut down, and then restart your computer in standard mode

If the issue persists and you still receive the error message that is described earlier in the
"Symptoms" section, follow the steps in Method 2.

Method 2: Reinstall the Windows Installer

To reinstall the Windows Installer, rename the damaged Windows Installer files, and then
reinstall the Windows Installer. To do so:

1. Click Start, and then click Run.

2. In the Open box, type cmd, and then click OK.

3. At the command prompt, type the following line, and then press ENTER, where Drive is
the drive where Windows is installed and where %Windir% is the folder where Windows is
installed:

attrib -r -s -h drive:\%Windir%\system32\dllcache

For example, type

attrib -r -s -h c:\windows\system32\dllcache

Note If you are using Windows 98, type system instead of system32.

4. At the command prompt, type the following lines, pressing ENTER after each line:

ren msi.dll msi.old

ren msiexec.exe msiexec.old

ren msihnd.dll msihnd.old

5. At the command prompt, type exit, and then press ENTER. Restart your computer. Update the Windows Installer files on your hard disk to the latest version. Windows Installer 2.0 is available for download from the Microsoft Download Center.