I have several times had the problem when installing software on my Microsoft Windows Vista SP1 (Ultimate edition) that the installation errors with a “Error 1722″. The error 1722 is a “Windows Installer Package”-error.

Sometimes the error can be solved installing the Microsoft Visual C++ 2005 SP1 Redistributable Package, which can be found here for 32-bit Windows.

However after installing the above I still got the problem with some software (Microsoft Dynamics NAV / Navision being one of them).

I therefore used the command “Run as Administrator” when I started the installer (you can find the command by right-clicking the file). But the “Run as Administrator” is not shown when right-clicking a .msi-file.

I have a little work-around for that – the Command Prompt:

1. Go to Start -> All Programs -> Accessories.
    
2. Find the short-cut for Command Prompt and right-click it. Choose “Run as Administrator”.
    
3. The Command Prompt opens. Now navigate to the folder where your .msi-file is placed (you need to know the standard DOS-command ‘CD’ – I will in short explain it further down).
    
4. Now run the .msi-file through the Command Prompt. You can do that by typing the name of the .msi-file and push “Enter”.
    
5. Run through the installation and hope it works – it does for me!

The DOS-command CD – very very very short!

Typing “CD ..” (without the quotes) will navigate you to the previous folder.

Typing “CD foldername” (without the quotes) will navigate you to the folder “foldername” that exists at your current destination.