u/40513786934

Anybody else struggling with this? It seems like its some kind of missing requirement (.net framework or runtime or?) that 3.x needs. But I haven't been able to narrow it down. We purchase through N-Able so I can't reach out directly to DNSFilter support. N-Able just tells me "use version 2.x". That's fine for now but I'd really like to know how to fix this.

EDIT - confirming that freedomit was correct, installing .net 4.8.1 and rebooting lets 3.x install.

It is interesting that their website and their reddit comments state that requirements for 2.x and 3.x are the same.
in practice they are not, as 2.x versions installed fine on these systems.