Edge can’t be opened anymore

I have three browsers in my PC: Edge, Chrome, and Vivaldi.

Until today, I had no problem using any one of them. Today I cannot open Edge. So I reinstalled it and rebooted my PC. (My Control Panel Apps list shows Edge to be there with today’s installation date.) I still can’t open Edge.

Please suggest a solution. Thank you.

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Incidentally, after downloading and executing Edge setup, strangely I never got the message which is routinely obtained after downloading and executing setup of any app, saying “installation successful; click on Finish.” (But, as I wrote above, Control Panel Apps list does show Edge with today’s installation date.)