1. Open <pf_install>/pingfederate/bin/run.properties in a text editor.
  2. If not already present, add a new line to the file as follows:
    org.apache.xml.security.ignoreLineBreaks=true
  3. Save the file.
  4. Stop PingFederate and restart it to pick up the change.

If running a cluster, you must apply these steps on all nodes.