MediaDownloader | implementing management for background downloads | Download Utils library

It looks like your not resting the memory stream. Try moving var jetStream = new System.IO.MemoryStream(); into the foreach.

When authenticating to Google there is a difference between an installed application and a web application. Installed Applications can open the authorization window in the browser on the current machine, Web applications need to open the web browser for the authorization on the users machine. GoogleWebAuthorizationBroker.AuthorizeAsync Is designed for use with installed applications. It will open the web browser for authentication and authorization on the server which wont work.

For a web application you should be using GoogleAuthorizationCodeFlow

Looks like you can set the service's HttpClient.Timeout property, which fixed my issue. I still can't do more than 2 concurrent downloads, but this is enough. My main issue was my function raising the TaskWasCanceled exception. If anybody knows how to allow more than 2 concurrent downloads, please comment on this answer! Either way, here's an e.g. of setting the timeout (assuming service is your new DriveService instance):

It looks like the issue here might in fact be related to your domain so just like mentioned in the issue you shared, it'd be best to contact GSuite Support.

The code you are using is not for downloading files from Google Drive; it is for obtaining files from Google Cloud Storage.

After looking over your question I realised that you're trying to translate code that downloads data from Google Cloud Storage, not from Google Drive. These aren't the same thing and one can not be used for the other. Here I will provide the fixes for your code, and how to authenticate with Google Drive using VB.NET also.

It is also something to note that depending on whether you want to download a native Google Drive file (Docs/Sheets/Slides/etc) or just a file stored there, as native Google Drive files can not be downloaded directly, and must be exported to a download-compatible format such as .docx or .csv.

As a compilation of what has already mentioned in the comments above, you are missing two imports for methods in your code:

I raised the issue to Google and it seems it was fixed (cf this issue). I tried again today and following the steps described in the original question, I now can see that after the Excel file has been edited with Google sheets, its size is now greater than 0 and it can be downloaded.

Files that couldn't be downloaded because of this issue still appear to have the same problem but deleting/reuploading manually these files should make them downloadable.

If the issue is......... "I'm trying to get a static file on MY hosted web site"...then you'll want to look at this article:

https://docs.microsoft.com/en-us/aspnet/core/fundamentals/static-files?view=aspnetcore-3.1

The key is this:

As per the code you showed, you are trying to use System.Web.HttpContext.Current.Server.MapPath, which indeed does not exist in .NET Core.

There is no more HttpContext static usable in ASP.NET Core, along with System.Web entirely.

To replace the "Server.MapPath", you can follow some guidance here : https://www.mikesdotnetting.com/Article/302/server-mappath-equivalent-in-asp-net-core

Basically, you need to access a IHostingEnvironment env object, that ASP.NET Core will happily inject.

I'd recommend not using static methods to leverage the constructor dependency injection that is performed in controller constructor automatically.

Otherwise you can also call the dependency service to get the instance (all the details of how to use the dependency service is a bit out of scope here, but feel free to comment if this is not clear)

From this, you should be able to get the path of the server :