On a viewflow screen, you select one of the activities to see additional information for that activity. This should redirect you to the Activity Instance Details page for that activity, but instead you are presented with a 404 error that the requested resource was not found or has been moved. This is caused by the incorrect URL being generated for the redirect causing you to visit an invalid URL.
You had a 4.7 environment with multiple sites configured in IIS and you upgraded to 5.3 without consolidating your sites. Workflows that were created in 4.7 will continue to exhibit the expected behavior when you click on an activity from a viewflow. When you click on an activity from a workflow's viewflow that was created with the new designer, you are redirected to the wrong URL and shown an error.
The redirect URL will look like the following:
What the redirect URL should look like:
When you click on a viewflow activity, the following error is displayed: upgrade multiple server application
This issue occurs on environments that had multiple sites configured in 4.7 that upgraded to 5.3 without consolidating the sites.
Use of the following options as a workaround to this issue: