The following fork is an attempt to rejuvinate the ODM codebase. https://github.com/Apra-Labs/ONVIF-Device-Manager/tree/ak/rejuvinate this fork builds with VS2 -builds with VS2022 -Uses FSharp.Core.3.0.2 -Uses dotNet4.5 and hence supports TLS1.2 Author has appreciated the ODM tool for years and this is an attempt to keep it alive. Happy to take requests to improve it further.
The following build of ODM is ready with TLS1.2 https://github.com/Apra-Labs/ONVIF-Device-Manager/releases/tag/v2.2.250-x64-tls1.2