However, the latest version 3.2.1 or 3.2.0 cannot be updated. This cannot be installed automatic or manually either, since “This Application only runs on Windows 10, Version 1709 or higher !” is displayed during installation. If try exctract MSI Package and start - get (CLDAPI.dll is missing).
I am currently still using the Nextcloud Desktop-Client Version 3.1.3.
This can be installed on a Server 2012 R2 and 2016 or 2019 and it’s works fine.
Link: Release Release 3.1.3 · nextcloud/desktop · GitHub