Office Libre 6.2.2 Start up Windows 10

I have used Libre Office 6.1 Writer (Win 10) with no problem. I updated to Libre Office 6.2.2 Writer (Win 10) recently. Office Writer 6.2.2 won’t boot up at all. Can’t get to my Writer documents to back em up. How can I get 6.2.2 to work again?

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Use task manager to see if you already have an instance of the old version running and kill the process if found. Restart Libre Office.

Or

Reboot windows if you have not already tried.