I am using LibGit2Sharp in a custom git client, works fine on my machine but when I run the same code on a different machine with the same credentials I am getting the error:

unknown certificate lookup failure: 16777280

I’ve done some googling and looks like its something to do with the authentication certificates but as I’m cloning HTTPS I thought providing the username and password of the gitlab user is enough?

Anyways, can anyone guide me on a resolution here? This is a little above my knowledge and first time using a git API.

Here is the code I’m using. To reiterate, it works perfectly on my own machine but not on another.

public void Clone()
{
    // Notify about the cloning process initiation
    this.OnUpdate?.Invoke(this, new OnUpdateEventArgs
    {
        Severity = LogType.Info,
        Message = $"Cloning the repository {this.RepositoryInfo.Name}"
    });

    try
    {
        // Clone the repository with credentials
        Repository.Clone(this.RepositoryInfo.RemoteRepository, this.RepositoryInfo.LocalRepository.FullName,
            new CloneOptions
            {
                FetchOptions = { CredentialsProvider = (url, user, cred) => new UsernamePasswordCredentials { Username = this.Author.Credentials.UserName, Password = this.Author.Credentials.Password } }
            });

        // Notify about the successful cloning
        this.OnUpdate?.Invoke(this, new OnUpdateEventArgs
        {
            Severity = LogType.Success,
            Message = "Repository cloned successfully."
        });
    }
    catch (Exception e)
    {
        // Notify about the error during cloning
        this.OnUpdate?.Invoke(this, new OnUpdateEventArgs
        {
            Severity = LogType.Error,
            Message = Errors.GetErrorString(86) + " : " + e.Message
        });
    }
}