After a reboot my desktop Windows icons have a green tick against them. This reminded me of source control / upload managers like SNV or Dropbox. I don’t run any of these on the machine – unless Windows OneDrive, which I try to disable always, is playing with settings.
A quick search revealed :
Go to Control Panel > Folder Options > View > Use check boxes to select items.
Untick the box with the check. Click ok.
The check box was unticked – so I ticked it anyway to see what happened and the green ticks disappeared – I kept ticking to see if they returned but they stayed disappeared. Sorted!