Windows 10 drag and drop no longer works for emails, or files. I tried pressing escape while left clicking. Restarted, restarted windows explorer and even a registry change. Nothing...
This is also all of a sudden happening on a Windows 7 machine at a different office.
Are you subject to a virus attack? Have you installed incompatible software? This is not a Windows 10 or 7 issue at all. I would look for external issues.
This topic area includes legacy versions of Windows prior to Windows 2000: Windows 3/3.1, Windows 95 and Windows 98, plus any other Windows-related versions including Windows Mobile.
maybe the office is in presence of an attack.