When you launch the Open Plan Add-in, you may encounter an error similar to the following: "A critical error occurred logging into the PM Compass Web Service. The provided URL scheme "http" is invalid; expected "https."
The http or https in the _PMCWEBSERVICEURL value must match the "http" or "https" option selected when you install the Open Plan Add-in on the Open Plan client machines. If they do not match, errors will occur when you launch the Open Plan Add-in. For example, if you specified that http is used to access PM Compass during the Open Plan Add-in installation, but the value of the _PMCWEBSERVICEURL starts with https, when you launch the Open Plan Add-in, you will encounter an error.
For more information, see Open Plan Add-In Application URL is not in the Database.