After you upgrade your citrix site, or on a new citrix site creation, when you open director portal, under sessions/logon performance tab for logon duration details it shows “no data is available for the specified time period”.

Based on your CVAD version, copy the source files into a folder on your VDA (app servers). Goto iso\x64\Virtual Desktop components folder and right click on UpmVDAPlugin_x64.msi file and click repair. complete repair and reboot the server. If it is still not working, mount the iso file/ run autoselect.exe/select multi session vda or goto control panel/ citrix vda software/ click change. Select add or remove components. Click next, next, next and finish. Reboot the server once done.