Signs:

When endeavoring to install the Microsoft Windows Installer, you may receive the consecutive mistake message:
“Error 1603: during the installation, a fatal error occurred”.

windows error 1603

If you depress OK in the message box, the installation will be canceled.

Causes:

  1. The catalog is encrypted, in which you endeavoring to install the packet of Windows installer.
  2. The disk containing the catalog, in which you endeavor to install a Windows Installer packet, is a removable hard drive.
  3. The account SYSTEM does not have admission for the full control of the folder, in which you endeavor to install the Windows packet installer. The mistake message emerges because the Windows Installer service uses the account SYSTEM to install the software.

Solution:

To deal with this issue, endeavor one of the consecutive methods depending on the cause of the problem.

  1. Install the packet in an unencrypted catalog.
    This method is applied when you receive a mistake message while endeavoring to install a Windows Installer packet to an encrypted catalog.
  2. Install the packet to a drive that is not a removable carrier.
    This method is applied when the mistake message emerges because the drive containing the catalog, in which you are endeavoring to install the Windows Installer packet, is located on a removable carrier.
  3. Provide a full access to the account SYSTEM. (It can be applied only for Windows 2000 and Windows XP).
    This method is applied, if the mistake message emerges because the account SYSTEM does not have the admission for a Full Control of the catalog, in which you are endeavoring to install the packet installer Windows.

Video instructions: How to Fix windows error 1603