-: Pressing the CTRL while closing Explorer window seems to be just a temporary

permanent Solution is to edit the registry.

Delete the Registry keys


HKEY_CURRENT_USER\Software\Microsoft\Windows\Shell\Bags and
HKEY_CURRENT_USER\Software\Microsoft\Windows\Shell\BagMRU, both with
all the subentries, then create new keys “BagMRU” and “Bags” here. At
HKEY_CURRENT_USER\Software\Microsoft\Windows\ShellNoRoam create a new
DWORD entry
BagMRU Size
and set this to
5000 (decimal)
Restart the computer. Re-setup your folders.

-Manish Kumar