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Problem

When running the Web Viewer installer, the installation program quits immediately without leaving a log file. Error message mentions "error 1603".

Summary of solutions

The issue can be solved by the following actions. Please refer to the sections further down for the details on each solution.

1. Ensure that "Enable 32-Bit Applications" is set to "True" for the DefaultAppPool
2. Ensure that the Default web application has a http binding to port 80
3. Ensure that the Default web application has ID 1
4. Ensure that "Enable IIS 6 compatibility" is installed in the "Turn Windows Features On or Off" section of the "Program and Features" Control panel.
5. Ensure that the installer is run by an Administrator

Installation of Signifikant Server or Web application, version 5.0 or earlier.

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When searching for the error, here is an explanation: https://codeasp.net/blogs/microsoft-net/1214/msi-installer-error-custom-action-completed-with-return-code-340

To enable IIS 6 compatibility. Go to Control panel -> Program and Features-> Turn Windows Features On or Off and modify as shown in the image below:

Background: Installer must be run by an administrator

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