.NET Framework 4.8 Known Issues This document lists the known issues that you may experience after you install the Microsoft .NET Framework 4.8 Product issues for the .NET Framework 4.8 776516 - ASP.NET - InvalidOperationException in ASP.Net-RecycleLimitMonitor-AlertProxyMonitors 780675 - WPF - Per-Monitor DPI-aware WPF applications position mouse cursor incorrectly when dragging between monitors