You might see an error when connecting to the Apple ID server, which lets you access Apple's various online services.

Why does it say There was an error connecting to the Apple ID server? There was an error connecting to the Apple ID server error while signing into iCloud, indicates that there is a server issue.

As a result, if any apps on your iPhone, iPad, or Mac attempt to connect to a secure site, the network returns the certificate for its local hotspot portal server.

Apple’s Mail app for iOS, iPadOS, and macOS reveals errors that occur when a connection to an incoming or outgoing mail server can’t be made.