Eset kindly emailed us the following today, for all our clients using Eset Anti-virus.
We recommend having the latest build of version 5 or 6 installed to make sure your ESET security solution is compatible with Windows 10. To get the latest builds, please navigate to ESET download section
If you are currently using ESET endpoint solutions that are compatible with Windows 10, then there is no need to upgrade them. ESET solutions will keep all settings and license credentials, and will work automatically after you migrate to Windows 10.