Using CSOM with ADAL and uploading a file - Error 401 (Unauthorized)

Hi!

I have a request where I want to upload a file to  OneDrive for Business. but I don't want to ask for the user credentials (name and password). I use ADAL for this purpose. The login Works OK but when calling SaveBinary I get an error 401.

I show step by step what I do.

In the azure server, I go to "Azure Active Directory", then I go to "App registrations" and I click on "New application registration".

I enter this data:

Then I click on CREATE.

Now I click on Required permissions, then I click on Add, I click on Select an API.

Here I select "Office 365 SharePoint Online". I click on Select.

In Select permissions I add all permissions:

I click on Select. I now click on Done and I click on Grant permissions.

I will put my C# code in a next post (it does not allow me)

When I execute it. When calling SaveBinary I get a System.Net.WebException (The remote server returned an error: (401) Unauthorized)

The problem happens when calling SaveBinary.... if I modify the part of the code that does the login and I put the credentials (user name and password), SaveBinary Works OK. So it smells like if there is something I missed...

Does this schema work OK with OneDrive for Business? Maybe it can work OK with SharePoint Online but not with OneDrive for Business...

Thanks