InDesign 16.1 menu unclickable. Always shows hour glass cursor on Windows
Starting today morning I am facing issues in accessing menu items on my InDesign 2021 16.1 on Windows. The application cursor is the wait cursor mode and clicking on any menu item does not have any effect. Even keyboard can't be used to select any menu items. However, I can open a new document using "Create new" button as shown.
I can't understand what's the issue and how to resolve. FYI, I have InDesign 2015 Release and Debug versions installed on this machine