3. At Login prompt, type the Admin Username, eg admin, and press enter (Note: In some cases when the Admin username is changed, login will fail. In this case please change it back to admin, by going to system administration page in the GUI)
4. At Password prompt, type the same password that you use for the GUI login and press enter
5. Snwlcli> rebuildwebroot
6. Snwlcli> restart tomcat
7. Now try to accessing the Email Security UI
If above resolution doesn't address your problem, please contact Sonicwall technical support for further assistance.