The sync tool is installed on SIMS-01 at AVA
Right click the EduLink Agent in the system tray.
Select Integrator Connections and select the Overnet Data Ltd with green traffic light
This will show you the below window
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If the Refresh Cache button is missing then this will mean that the cache is already being refreshed.
The cache refreshes automatically every 11-12 hours and takes a few hours to refresh