Parallel-Installation geht doch


It actually works this way:

  1. Go to the registry path HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\
     Windows\CurrentVersion\Uninstall\Office16.PROPLUS     (x86 Office) or HKEY_CURRENT_USER\Software\Microsoft\Windows\
     CurrentVersion\Uninstall    \Office16.PROPLUS (x64 Office)
  2. Add a DWORD value called SystemComponent and set it to 1
  3. Now make sure that in the control panel (Programs and Features) Office 2016 is absent
  4. You can install Visio 2016 now with the C2R installer, after that start it and enter your serial
  5. Remove the registry value from step 2 so that the Office 2016 entry appears again

Hope this works for you