Requirements
ASP.NET Web Forms on .NET Framework 4.8, matching the local demo package requirements.
Modern browsers with HTML5 file and drag-and-drop support provide the best experience for the current demos.
IIS Express, IIS, or another ASP.NET-compatible host with integrated pipeline mode for the handler.
Write access to `App_Data\UploaderTemp` or your configured temporary upload folder.
Core stack
The quick-start notes bundled with the local AjaxUploader demo explicitly point ASP.NET Core teams to CoreUpload instead of this Web Forms control.