Starting with Progress version 11.3.1 and later, the WebClient Application Assembler requires you to specify the location of the signing tools so that it can use the tools when signing the cabinet files digitally.

The WebClient Application Assembler requires you to enter the path to the signing tools when generating the application. If the signing tools are available to the WebClient Application Assembler, the WebClient Application Assembler can detect the location of the signing tools and prepopulate the path for you.