https://www.epo.org/en/service-support/faq/myepo-services/online-filing-software/online-filing-sp14/how-do-i-check-thin

How do I check the thin client version?

Navigate to the OLF installation folder (normally C:\Program Files (x86)\EPO_OLF5 for stand-alone installations or C:\Program Files (x86)\EPO_OLF5-TC for client-only installations)

Find the executable OLFClient.exe and right-click on OLFClient.exe

Select Properties, select Details and view the file version