My mother (80 years old) has an iPhone 8 an iPad Air and a Windows 11 (Lenovo).
She recently switched ISP and for some odd-reason she had problems with her @iCloud.com e-mail adres. Her old ISP revoked her firstname.lastname@example.org adres. But I thought no worries, she has an Apple ID email@example.com so there is e-mail attached to that.
But she can’t receive e-mail on iPhone / iPad / and Outlook on the Windows 11 (Lenovo) system.
I can see she has her account enabled on iOS devices… but no joy when trying to send/recieve mail.
Only on webbrowser logging into www.icloud.com she can view mail.
I tried to make app specific passwords for the Windows system. Tried it in Thunderbird mail on Windows and Outlook. Both give errors that iCloud cannot be reached…
The funny thing is, on my Apple Macbook I used her credentials in the normal macOS mail application and there within seconds I get the e-mail up and running…?!
Anyone any idea? Can this be an ISP related thing?
That sounds to me as if there is an issue that prevents the iCloud software to establish a working connection with Apple.
Sometimes, third party software that is tinkering with network stuff is to blame.
The issue is with the “Killer Intelligence Center”. This appears to be an app that manages network priorities through my Ethernet port on my Dell machine. Once I turned off the prioritization feature, the problem with iCloud went away.