Installation error / 0x800706D9


I try to setup an tentacle on a Windows Server 2016 from a customer who is hardened. Here is the error message I have. Anyone already had this issue in the past ?

Saving instance: Tentacle
Setting home directory to: D:\Data\Inetpub\Deploy
Error: ===============================================================================
Error: There are no more endpoints available from the endpoint mapper. (Exception from HRESULT: 0x800706D9)
Error: System.Runtime.InteropServices.COMException
Error: at System.Runtime.InteropServices.Marshal.ThrowExceptionForHRInternal(Int32 errorCode, IntPtr errorInfo)
Error: at Octopus.Shared.Internals.CertificateGeneration.Win32ErrorHelper.ThrowExceptionIfGetLastErrorIsNotZero()
Error: at Octopus.Shared.Internals.CertificateGeneration.CryptContext.CreateSha256SelfSignedCertificate(SelfSignedCertProperties properties)
Error: at Octopus.Shared.Internals.CertificateGeneration.CryptContext.CreateSelfSignedCertificate(SelfSignedCertProperties properties)
Error: at Octopus.Shared.Security.CertificateGenerator.Generate(String fullName, Boolean exportable, ILog log)
Error: at Octopus.Tentacle.Configuration.TentacleConfiguration.GenerateNewCertificate()
Error: at Octopus.Tentacle.Commands.NewCertificateCommand.Start()
Error: at Octopus.Shared.Startup.AbstractCommand.Start(String[] commandLineArguments, ICommandRuntime commandRuntime, OptionSet commonOptions)
Error: at Octopus.Shared.Startup.ConsoleHost.Run(Action`1 start, Action shutdown)
Error: at Octopus.Shared.Startup.OctopusProgram.Run()
Error: -------------------------------------------------------------------------------
Error: Terminating process with exit code 100
Error: Full error details are available in the log files at:
Error: C:\Users\SetupUser\AppData\Local\Octopus\Logs
Error: D:\Data\Inetpub\Deploy\Logs
Error: If you need help, please send these log files to
Error: -------------------------------------------------------------------------------
Error: The previous command returned a non-zero exit code of: 100
Error: The command that failed was: “C:\Program Files\Octopus Deploy\Tentacle\Tentacle.exe” new-certificate --instance “Tentacle” --if-blank
Deleted instance: Tentacle

Best regards


I have not seen any other reports of this issue.

What you could try is:

  1. Manually generate a new Tentacle certificate on a different computer (that isn’t hardened).
  2. Install the Tentacle using Tentacle.exe from the commandline, but instead of running Tentacle.exe new-certificate follow the instructions on how to import the certificate you generated in point 1.

I hope that helps.

Thank you and kind regards,

Hello Henrik,

In the middle time I have found the solution.

The hardening of the server was the issue. The problem was not on the GPO but the CNG Windows Service need to be activated to work :

Best regards

Hi Yannick,

Great to hear that you found a solution, I will add this to our docs so that if other customers run into the same issue we know how to solve it for them.


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