Windows Explorer Appears to Get Stuck at Canceling Copying Files
When I tried to cancel copying a large set of files at a Windows 10 system, it appears that Windows got stuck at canceling it forever. Below I saw,
which shows this "Canceling - 10% complete" indicator forever even after I closed the window. When I tried to copy a different file, this indicator stayed. This is actually not that the Windows tried to cancel copying forever. It is instead that Windows Explorer somehow kept some internal canceling state.
At present, the solution to address this are a few. The following two appear to work.
Reboot the system. This is a heavy-handed solution.
Terminate the Windows Explorer process, and restart the Windows Explorer process.