CATALINA_HOME environmental variable is not defined correctly
At first you have to mention tomcat up to tomcat’s version refer below CATALINA_HOME: C:\Program Files\apache-tomcat-6.0.35; then set CLASSPATH variable to CLASSPATH : C:\Program Files\apache-tomcat-6.0.35\lib; then finally edit path variable to PATH: .;%CATALINA_HOME%\bin; NOTE: a semicolon(;) must be put at the end of each and every variable.