Unity Editor v2021.3.17f1 - Duplicate hotkey CTRL+D not functioning.

Unity Engine
1

Windows 11 x64 Version 22H2 (OS Build 22621.1105)
Unity 2021.3.17f1
Unity Hub 3.4.1

The duplication hotkey CTRL+D is not functioning on Unity Editor v2021.3.17f1

Please advise

2

resolved after a restart.