1. Check naar welke versie je wil gaan
https://docs.microsoft.com/en-us/officeupdates/update-history-office365-proplus-by-date?redirectSourcePath=%252fen-us%252farticle%252fae942449-1fca-4484-898b-a933ea23def7
2. Start nu CMD op als administrator
3a. Voor Office 2016
For an Office 2016 installation:
cd %programfiles%\Common Files\Microsoft Shared\ClickToRun
3b. Voor Office 2013
For an Office 2013 installation in a 32-bit version of Windows:
cd %programfiles%\Microsoft Office 15\ClientX86
For an Office 2013 installation in a 64-bit version of Windows:
cd %programfiles%\Microsoft Office 15\ClientX64
4a.
For Office 2016
officec2rclient.exe /update user updatetoversion=16.0.xxxx.yyyy
4b.
For Office 2013
officec2rclient.exe /update user updatetoversion=15.0.xxxx.yyyy