NotSupportedException when trying to run wyUpdate.Answered

Application: wyUpdate.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.NotSupportedException
  at System.Net.ServicePointManager.ValidateSecurityProtocol(System.Net.SecurityProtocolType)
  at System.Net.ServicePointManager.set_SecurityProtocol(System.Net.SecurityProtocolType)
  at wyUpdate.Downloader.FileDownloader.SetupSaneDownloadOptions()
  at wyUpdate.frmMain..ctor(System.String[])
  at wyUpdate.Program.Main(System.String[])

I think the machine in question supports TLS 1.1 and TLS 1.2 but not TLS 1.3.

Is TLS 1.3 now required?

An old version (2.6.18.4) works, but then updates wyUpdate to a non-working version.

Answer

It sounds like you're using a beta (built from source) version of wyUpdate. We don't support custom builds. Never have, never will.

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