The office is running Office 365 & everyone shares a couple of calendars that are set up in iCloud. After upgrading to the latest Office 365, calendar syncing has stopped working. After talking with Office 365 tech support, they have determined that we need to upgrade the iCloud software to the latest version, too. WHen trying through the spple softeware updater, I get the message 'Errors occurred while installing the updates. If the problem persists, choose tools > download only & try installing manually'. When I try this, I get the following message 'There is a problem with this windows installer package. A program run as part of the setup did not finish as expected. COntact your support personal or package vendor'.
All PCs are Windows7 & yes, AV software was turned off while trying the update.