After a Windows Update I tried to updat LibreOffice but it did not work, and I could not install a newer version (5.x)
During installation always question for location of an older version which is not on my system anymore.
Tried several times. No success.
What can be wrong?
Use the identical method as written in my answer to Q64588 (involves a vast download, but easy to do).
The only solution up to now was an installation of Apache. So I can at least view and edit my documents again.
I hope somebody can give me a working solution to go back to LibreOffice again…