Expired SSL Certificate: central.downloads.cubecoders.com. Unable to create Minecraft Instance

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OS Name/Version: Ubuntu Server 24.04.2

Product Name/Version: AMP Instance Manager v2.6.1.2 built 25/03/2025 13:01

Problem Description:

I am unable to create a new Minecraft Java instance. The instance fails to download, and the logs show a SSL Certificate error. I confirmed the cert expired March 22 2025.

Downloading AMP from https://us-central.downloads.cubecoders.com/AMP/Mainline/20250325.1/AMP_x86_64.zip...
HttpRequestException
[0] (HttpRequestException) : The SSL connection could not be established, see inner exception.
   at Net.Http.ConnectHelper.EstablishSslConnectionAsync(SslClientAuthenticationOptions sslOptions, HttpRequestMessage request, Boolean async, Stream stream, CancellationToken cancellationToken)
   at Net.Http.HttpConnectionPool.ConnectAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
   at Net.Http.HttpConnectionPool.CreateHttp11ConnectionAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
   at Net.Http.HttpConnectionPool.AddHttp11ConnectionAsync(QueueItem queueItem)
   at Net.Http.HttpConnectionPool.SendWithVersionDetectionAndRetryAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken)
   at Net.Http.DiagnosticsHandler.SendAsyncCore(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
   at Net.Http.RedirectHandler.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
   at Net.Http.HttpClient.<SendAsync>g__Core|83_0(HttpRequestMessage request, HttpCompletionOption completionOption, CancellationTokenSource cts, Boolean disposeCts, CancellationTokenSource pendingRequestsCts, CancellationToken originalCancellationToken)
   at ModuleShared.Utilities.DownloadFileWithProgressAsync(String url, String filename, RunningTask task, Boolean autoRemoveTask, String UserAgent)
AuthenticationException
[1] (AuthenticationException) : The remote certificate is invalid because of errors in the certificate chain: NotTimeValid
   at Net.Security.SslStream.SendAuthResetSignal(ReadOnlySpan`1 alert, ExceptionDispatchInfo exception)
   at Net.Security.SslStream.CompleteHandshake(SslAuthenticationOptions sslAuthenticationOptions)
   at Net.Security.SslStream.ForceAuthenticationAsync[TIOAdapter](Boolean receiveFirst, Byte[] reAuthenticationData, CancellationToken cancellationToken)
   at Net.Http.ConnectHelper.EstablishSslConnectionAsync(SslClientAuthenticationOptions sslOptions, HttpRequestMessage request, Boolean async, Stream stream, CancellationToken cancellationToken)
Download failed, retrying (attempt 1 of 5)...

Steps to reproduce:

  • Step 1 - Login to AMP
  • Step 2 - Create new Minecraft Java instance
  • Step 3 - Creation fails

Actions taken to resolve so far:
Confirmed in logs and with web browser that certificate is expired.

What’s the output of ampinstmgr version in your terminal?

Because the new endpoint in use is https://cdn-downloads.c7rs.com/

server-admin@mc-ubuntu:~$ ampinstmgr version
[Info/1] AMP Instance Manager v2.6.1.2 built 25/03/2025 13:01
[Info/1] Stream: Mainline / Release - built by CUBECODERS/buildbot on CCL-DEV

Just got word back and it’s intentional, so maybe try updating the ampinstmgr package, then try again.
Though being that you’re already on the latest version, I’m just crossing my fingers lol

Ok thanks I will give that a try!
Sorry, just noticed this might be a web UI issue. The web UI is still showing the older version 2.6.0.6… Seems something didn’t update quite right.
I’ll run through some more update attempts and report back.

There’s an update guide here if need-be. Also note, that updating the ADS using the button under Support and Updates often doesn’t work.

I performed the following, and I am now able to create the new Minecraft Java instance.

  1. su amp
  2. ampinstmgr -o
  3. ampinstmgr upgradeall
  4. reboot

Thanks for the quick response!

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