Issue

The Launch Harness action with the New Document option fails to download the correct text file after updating from Pega Platform 8.5.

Symptoms

HTML content is downloaded instead of text content.

Steps to reproduce

1. Launch Harness at the click of a button.

2. Invoke an activity (custom activity) inside the Launch Harness action set.

3. Add download file logic to the activity.

4. On the application portal, on click of the button (client portal, application portal, and so on), HTML content downloads instead of text content (content in text format).

Root Cause

This is an expected behavior post update from Pega Platform 8.5. 

The Harness action with the target set to New Document to download a file is not supported in Pega platform versions released after 8.5.

Solution

Use the OpenURLInWindow option to address the file download issue.

References

What is the difference when an activity to download Excel file is run by using Launch Harness and Open-URL-In Window actions