Yesterday I tried to uninstall a program and I get this message
The Windows Installer Service could not be accessed. This can occur if you are running Windows in safe mode, or if the Windows Installer is not correctly installed. Contact your support personnel for assistance.
So I went to this Microsoft page : http://support.microsoft.com/kb/315346
and I followed the instructions of method 2 (Reinstall the Windows Installer)
I followed all the steps but after step 7, no command prompt appeared, so I proceed and restarted my computer.
After that, I downloaded WindowsInstaller-KB893803-v2-x86.exe
from the Microsoft website and install it then restart my computer again.
Now, when I log on to my computer, I get several notices that some files are missing, those being the ones that was involved when I followed Method 2. (I will tell you the names of those files later because I have already closed those windows.)
When I enter Add/Remove programs from the Control Panel the Add/Remove programs window doesn't pop up anymore.
And when I try to install/uninstall a program I get this message :
This application has failed to start because msi.dll was not found. Re-installing the application may fix this problem.
I hope that someone can help me out. Thanks a lot.