Error: Failed to upgrade SharePoint Products and Technologies

The scenario:

When I try to add a new Web server to an existing farm with no Web applications, after installing the server I ran the SharePoint Products and Technologies Configuration Wizard & receive the following error message:

An exception of type-Microsoft.SharePoint.PostSetupConfiguration.PostSetupConfigurationTaskException was thrown. Additional exception information: Failed to upgrade SharePoint Products and Technologies.

And additionally, the Upgrade.log file contains the following error message:

The access control list on %system root%\Program Files\ Common Files \Microsoft Shared\Web server extensions\12\template\layouts\Web.config could not be modified because the path could not be located in the file system.

Why it happened?

This error occurs when the SharePoint Products and Technologies Configuration Wizard cannot locate or modify the Web.config file.
The reason for this error was because the SharePoint Products and Technologies Configuration Wizard cannot locate or modify the Web.config file - which was supposed to be in the 12\template\Layouts folder

How can I fix it?

1. simply copy the Web.config file from the following folder:
%system root%\Program Files\ Common Files\Microsoft Shared\Web server extensions\12\Config

2. plant it in the following folder:
%%system root%\Program Files\ Common Files\Microsoft Shared\Web server extensions\12\Template\Layouts.

3. Run the SharePoint Products and Technologies Configuration Wizard again

Microsoft Technet link