Authenticating a User from InstallScript

InstallShield 2025

Project: This information applies to the InstallScript projects.

If your One-Click Install installation requires authentication after it is started, you can authenticate the user on the fly using InstallScript. When authentication is required, the Web server returns HTTP error code 401 to your installation, which generates an InternetError event. Respond to that event by prompting the user for a user name and password in the OnInternetError event handler.

The easiest way to do so is to use the InternetErrorDlg API in WinInet.dll and return the value IDRETRY from OnInternetError. This causes the installation to issue the HTTP request for the file again. If users enter incorrect information, they will be prompted to enter it again.