After upgrading to version 5 on my Windows 8.1 computer, LibreOffice won't start

missing MSVCR120.dll, missing mergedlo.dll

It is likely that you need to update Visual Studio 2013 (this is the successful download for a similar missing msvcr120.dll under win7 in Q57505). However, Windows is terrifying for it’s continual updates & changes both within & between versions.

Possibly a more thorough checklist of possible fixes may come in Q56386 with the Microsoft Fix-It website (“Automatically repair issues that block program installation or removal because of corrupted registry keys.”)

Finally, a thorough library of VC++ downloads in KB2977003 (“The download links for the latest versions of Microsoft Visual C++ 2013, Visual C++ 2012, Visual C++ 2010, Visual C++ 2008 and Visual C++ 2005”), and the versions of Visual Studio to which they refer.

If this helps then please tick the answer (:heavy_check_mark:)

…and/or show you like it with an uptick ()

Unfortunately I use Window Viste. Need this the same uopdates?