Outlook 2016 on windows 10 - icloud issues

i have been using icloud for windows on my PC for a while now - and no real issues

but then i started noticing that items i entered in the icloud calendar on my iphone were not showing up in my outlook calendar - and vice-versa

i also started getting error messages when trying to edit or delete icloud calendar entries on the PC - and it simply would not let me delete them - "you do not have access to this folder" type messages

i read on here that some people had had success by closing outlook then uninstalling an re-installing icloud control panel

i tried this - and it seemed to re-install OK - but when i tried to switch on synch calendar in the icloud control panel i got an error message saying it did not in fact install correctly and i needed to go to the PC settings and repair the icloud app

there were actually 2 new Icloud apps installed

"icloud" and "icloud for outlook"

i tried repairing each in turn - which both yielded a tick mark - as if they did something useful - but i still get the same error message.

i tried uninstalling icloud again - restarting teh machine - then re-installing icloud - but exactly the same issue occurred

the Microsoft store says icloud is compatible with

OS: Windows 10 version 18362.145 or higher

Architecture: x64

my PC is

windows 10 pro version 19045.2965

x64

so meets the requirements

i really only need it for synching the icloud calendars with outlook

any help would be appreciated