https://www.epo.org/en/service-support/faq/myepo-services/online-filing-software/online-filing-sp15/how-do-i-installupdate

How do I install/update the thin client?

An OLF server should be already installed in your network before you install a thin client.

To install the thin client, you can either revert to the installation file OLF515.exe or use the thin client installation files. You can find the thin client installation files OLF515client.exe or OLF515client.msi in the program folder C:\Program Files (x86)\EPO_OLF5\ThinClient_v500 (C:\Program Files\EPO_OLF5\ThinClient_v500 on 32-bit systems) on the server PC following OLF server installation.

You can also download the latest version of the thin client installation files from the EPO website: Download software

OLF515client.exe can be used to install and update the thin client on all Windows operating systems without having to deinstall existing clients first.

OLF515client.msi requires the deinstallation of existing clients.

It is also possible to install thin clients in silent mode using a batch file.

For full installation instructions and information on using silent mode, please see the Installation Guide.