[Continued...]
So I did a little more research, and I found
this:
[h=3]Method Four. Reinstall Windows installer[/h] If all the methods above all fail to help you, the last choice is to reinstall the Windows installer.
1. At the start, search for CMD.
2. At the command prompt, type the following lines. Press ENTER after you type each line.
cd %windir%\system32
ren msi.dll msi.old
ren msiexec.exe msiexec.old
ren msihnd.dll msihnd.old
3. At the command prompt, type exit, and then press ENTER.
4. Restart your computer.
5. Update the Windows Installer files to the latest version. To do so, visit the Microsoft Web sites, and then download and install Windows Installer.
6. After the installation of the Windows Installer is complete, shut down and restart your computer normally before you install programs.
This article does not quote a source.
Can anyone say whether these instructions are accurate or not?
Here's the thing.
Windows 7 has Windows Installer 5.0.
But there is no redistributable for Windows Installer 5.0
Windows Installer Redistributables - Windows applications | Microsoft Docs
says very clearly, quote:
The Windows Installer 5.0 is part of the Windows Server 2012, Windows 8, Windows Server 2008 R2, and Windows 7.
There is no redistributable for Windows Installer 5.0.
So...
How do you reinstall Windows Installer on Windows 7 ????? :huh::huh::huh: