Here my cent's for create WIS-ASRA and EPC shortcut on desktop on Xentry XDOS 12.2017 (and later ?) never expire (error 462 EWA Session Token Expired)
1) GO TO Control Panel then to JAWA CONTROL PANEL - Temporary Internet Files-View- click on EPC and WIS ICON AND THEN DELETE the two applications and close JAVA CONTROL PANEL.
2) Run as administrator EWA ADMIN TOOL, go to Server Tab and Stop EWA server and Stop EWA database. Close EWA ADMIN TOOL. Go to C:\Program File\ or Program Files (x86) \ EWA \ config \ directory and locate the file um_cfg.xml and make a security copy.
open with a XML editor or Notepad and locate the two rows: <PARAMETER name="tokenActiveMinutesAfterStart">30</PARAMETER> and
change 30 value to -1 and <PARAMETER name="tokenActiveMinutesAfterReinitialization">480</PARAMETER> and change 480 value to -1
Close and save the file.
3) Run as administrator EWA ADMIN TOOL and go to SERVER TAB and click on Restart EWA Server and Start EWA database buttons. Close EWA ADMIN TOOL.
Restart the Pc
4) Open EWA with Internet Explorer and click the EPC button and open EPC application, close and exit the EPC, click the WIS-ASTRA button and open WIS application, close and exit the WIS-ASTRA.
Close and exit from EWA.
5) GO TO Control Panel then to JAWA CONTROL PANEL - Temporary Internet Files-View- click on EPC and WIS ICON and then CLIK INSTALL SHORTCUTS TO SELECTED APLICATION
That's all.....