The file location of the Msiexec.exe file should be similar to C:\Windows\System32. On the File menu, click Close.

Where are MSI uninstallers stored?

It expectes it to reside in the same folder as it was installed from. The registry keys in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall does point to the original installation folder, and error messages when the MSI file is missing often point to this.

Where are windows installers stored?

The Windows Installer Cache is used to store important files for applications that are installed by using Windows Installer. By default, this cache is located in the c:\windows\installer folder, and it should not be deleted.