I updated Windows 10 yesterday and now Libre Office won't open????

Libre Office stopped working after I updated Windows 10 yesterday. Any info on this?

I have had no problem with Windows 10 and Libre Office until I realised a recent W 10 upgrade had knocked out the sound on my desktop. I contacted Microsoft yesterday who reinstated an earlier version of Windows 10 which restored the sound. But now I can’t open any existing files or save any new files in Libre Office. Any ideas how to make LO work again please?