Currently, you can't use Outlook on Windows to edit calendars that are shared with your Outlook.com account, even if you've reconnected your Outlook.com account to Outlook. We're working to make it possible to edit shared calendars in Outlook 2016 for Windows. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical suppor When Microsoft Office is updated, it may lead to compatibility issues with the existing installation. For example, if a user ha...