iCloud encountered an error connect to server

In Windows network settings find your network adapter, right click and select properties. In there untick ipv6. This allowed me to stop getting errors in the iCloud windows app and in the website too. I saw this suggestion elsewhere but don’t know what the significance of ipv6 is!

for info I have a Windows 11 Dell laptop. In august I have updated Windows via the usual updates bit also had some Dell/Intel updates such as the Killer WiFi app. Not sure if iCloud also updated but suspect one of these has messed something up. All was fine around 10 days ago.

its in your wifi settings. that said, i disabled it and am still having the issue so it didn't work for me. I thought it might be windows 10 so i upgraded to windows 11 last night and still have the issue on both my PCs that are on the same network. very frustrating as i use icloud to download iphone content for editing. any help here would be VERY appreciated.

Some recent update has caused this. Either a Windows update, network update or the iCloud app itself. Disabling IpV6 in network properties sorts this out, but I don't know why.

Same problem; it was definitely the Killer app for me! As soon as I deleted it (disabling worked too, but it came coming back on restart), icloud connected with NO issues.