I don't know why. Please take a look at it for me.

[bbhxwl]

I don't know why. Please take a look at it for me. I can get root, which is the same as your demo, but I upload it, why fail, and your demo is OK? {"error":{"code":"invalidRequest","message":"Item does not match expected type"}}

static void Main(string[] args) {

       var t= Task.Run(async()=> {

            oneDrive = new OneDriveConsumerApi("*****", "*******");
            oneDrive.AuthenticationRedirectUrl = "******";
            string url = "http://*****.com/?code=M.R3_BAY.d88******";
            string msg = oneDrive.GetAuthorizationTokenFromUrl(url);
             await oneDrive.GetAccessToken();

           while (true)
            {
               try
               {
                   string path = Console.ReadLine();
                   var root = await oneDrive.GetDriveRoot();
                      var f=    await oneDrive.UpdateFileViaSimpleUpload(new FileInfo(path),root);
                  // var f = await oneDrive.UpdateFile(path,new KoenZomers.OneDrive.Api.Entities.OneDriveItem() {  });
                   Console.WriteLine(f.OriginalJson);
               }
               catch (Exception ex)
               {
                   Console.WriteLine(ex.Message);

               }

            }

        });
        t.Wait();

    }

[bbhxwl]

I wrote upload as updatefile.. I got it! thank you. I manually get the URL of getauthorizationtokenfromurl myself. If my program is closed, the URL will be expired and can only be obtained once. Is there any way to recycle it?

[KoenZomers]

See https://github.com/KoenZomers/OneDriveAPI/issues/26