If the right-click context menu appears and disappears quickly before you select an option, the problem may be due to an interfering process.

If you only want to see local files: Click the ellipsis icon in the ribbon and choose Options. Uncheck the box labeled Show files from Office.com. If you don't like the new context menu in Windows ...

If the Right-click menu is stuck on the screen in Windows 11/10 and does now disappear, you must take these steps to fix the issue once and for all.

Detest Windows 11's context menu—and want to restore it to the legacy right-click menu? Here are two ways to get the old context menu in Windows 11.

4. More right-click menu options When you right-click on a file or folder in the new File Explorer, a menu appears—but it’s shorter than you’d expect.

Learn how to reduce the number of commands in the Windows 10 version of the menu with help from handy third-party utilities.

edit: I think I understand why OP is not seeing the Open option in the right click context menu. If you select a bunch of files of a variety of file types, that option is not available.