FIX Error: "Upgrade to iCloud for Windows [version] failed (Error 101)
The latest upgrade of iCloud for Windows encountered an unsuccessful installation, accompanied by the appearance of error code 101. If you're currently experiencing the same issue, please check out this video.
Apple has made commendable efforts in offering a Windows PC application for accessing iCloud storage. Just as you access your iCloud content on a Mac, iPhone, or iPad, you can do the same on a Windows 11 or Windows 10 PC.
However, a persistent issue has emerged with the iCloud for Windows app: it impedes the automatic updating of your Windows PC's iCloud copy. This presents a significant security concern that warrants careful attention.