In Windows XP (and perhaps up to Windows 7) in Task Manager there was a Windows tab where I could right-click an entry for an unidentified message box and then switch to the process which owns that window.
In Windows 10 however, Task Manager has drastically changed. I no longer find anything resembling the Windows tab, so can't seem to do the same procedure I could in Windows XP.
Is the functionality lost? If yes, what stock utility can be used in Windows 10 to determine which process owns a particular toplevel window?