After installing Microsoft Windows patch KB3172605 on a client PC, Internet Explorer can no longer access Tomcat -based servers via HTTPS (ports 8443/8444)
Performing a DA installation on a system that once had a Common Tomcat installation can sometimes be difficult. The DA installer may find traces of the Tomcat in the directory structure or in the registry (on Windows)
DA Server will not start. The following error can be found in the DA or Tomcat logs: 2018-02-16 14:10:24,331 - Failed to start Serena DA java.lang.NullPointerException at java.util.Hashtable.put(Hashtable.java:459)