Apple has released an update to the iCloud for Windows app. The update, version 7.8.1 for those keeping score at home, fixes some incompatibility issues with the newest version of the Microsoft Operating System.
In October, Microsoft released version 1809 of Windows 10. The release did not go smoothly on several fronts, including iCloud for Windows. The issue was that some users could not update Shared Albums after upgraded to 1809. Microsoft went as far as to block the app from being download by Windows users, stating they were working with Apple on a fix. It appears that fix has now arrived.