When closing the Attendance Window in 8.7/2019 customer got an error SS Central: SS_UI_DataGrid cannot be serialized. When they click Report, the system says "Thanks" and but just shows the error again. They have to close module via Task Manager
The new Attendance module must be running .NET 4.0 or newer. Check Control Panel, Programs & Features, Turn Windows Features On or Off. If on 4.0 or newer, you can try a repair. If not, Check for Windows Updates or try a stand-alone .NET installer via Microsoft. Customer might consider upgrading to Windows 10 if on a lesser version.