When connection error is occured at iCloud and Apple's services are all green, its root cause is the user's environment.
Although Apple mentions about sign in issue, there is no official answwers about connection issue*1.
Regarding connection issue, the next solution is often suggested*2,
But this is not always the solution, atleast not decisive one. If DNS and its name resulution is the root cause, all browsers installed in a single PC failes connecting to iCloud. And same to IPv6.
But there is the case that certain browser can't connect but others are no problem, example in case that connection with Chrome Canary is failed, but stable version of Chrome is OK.
In such case, an use may doubt Chrome Canary has root cause of connection issue. This is right guess logically, but the true root cause is not there. Because obstructive factor of connection including name resolution is the root cause. A user must identify affecting only to certain browser.
This post introduces some solutions for this issue. Simply, to domains that iCloud depnds on,
- Review name resolution
- Identify obstructive factor of connection
However, due to the circumstances above, it is not possible to provide a common procedure for dealing with each individual case. An user needs indentify the scope of affection, and then take the necessary measures for each casae in consideration of the suggested solutions.
However, due to the above circumstances, it is not possible to provide a common procedure for dealing with each individual case. First, please identify the scope of the problem, and then take the necessary measures for each case in consideration of the proposed solutions.
- Assumption - domains that iCloud depends on
- Solutions
- Review hosts file
- Review DNS
- Review Internet security software
- Review browser's extensions