Error "Windows Installer Cannot Be Accessed"

I have downloaded Itunes and some other softwares and afterwards I get an error message "Windows Installer cannot be accessed..This can occur when
Windows installer is not correctly installed".


I have tried to download and install Windows Installer from microsoft but when trying to run that it says "not enough storage is available for this command"

Anyone have any ideas?

See suggestion given in similar type of threads: http://forums.techarena.in/windows-s...elp/227045.htm
http://forums.techarena.in/vista-help/888555.htm
http://forums.techarena.in/vista-help/848344.htm
http://forums.techarena.in/vista-help/920108.htm

To resolve this problem, use the following methods.

Use the Msconfig tool to confirm that the installer service is running

1. Click Start, and then click Run.
2. In the Open box, type msconfig, and then click OK.
3. On the Services tab, click to select the check box that is next to Windows Installer .
4. Expand this imageClick to expand this image
5. Click OK, and then click Restart to restart the computer.

Check the Windows Installer service (Control Panel - Administrative Tools, Services) is running. It should be set to manual or automatic. Also check the dependency Remote Procedure Call (RPC) service is running.

Click Start, Run, and type SERVICES.MSC. In the right pane, right-click Windows Installer, and then click Start. Also, set the service "Startup Type" to Manual.

"The windows Installer service Could Not Be Accessed" error message when you install a program in windows XP:

http://support.microsoft.com/?kbid=315353
http://support.microsoft.com/?kbid=314810
http://support.microsoft.com/?kbid=315346
http://support.microsoft.com/?kbid=324516