Have you ever had a computer in your dashboard that are offline forever?
Well, we had a problem for quite a while that was more devastating that we anticipated. Windows decided to flag deploymentclient.exe as a virus and removed it. We battled this by contacting the virus companies and getting it unflagged, but the problem was that we had to do this for every new build (update). Until we discovered that signing the file was enough to make this problem completely vanish.
This was solved 12 Aug 2019, but we had to acknowledge it.
For self-hosted server (v1), download the signed exe here: https://deployify.io/news/deployment-client-update
Self-hosted server v2 never had this problem, since it is new.