We currently don't support Windows as a client. The main reason is that the builtin Windows NFS client is v3, while EFS is v4+. Some people have reported succes

We currently don't support Windows as a client. The main reason is that the builtin Windows NFS client is v3, while EFS is v4+. Some people have reported success mounting EFS on Windows using a third party NFS client, but I cannot comment on how well this works.