After updating to iOS 16.3, some iCloud customers have reported that they’re experiencing points with iCloud Drive, Photos and backup add, and it appears to be associated to the absence of two-factor authentication, reviews AppleInsider.

The cases comply with the replace to iOS 16.3 which made safety modifications to allow bodily safety keys for use to safe accounts and increasing Advanced Data Protection outdoors of the US.

According to the customers’ reviews, they observe a message stating, “An Unexpected Error Occurred. Please attempt once more later.”

In most cases, two-factor authentication isn’t activated, which is a common thread in the users’ reports. However, there are also a few reports of users experiencing the same problem despite two-factor authentication already being enabled, so it might be possible that the cause is something else.

It appears that some users have tried to contact Apple’s support for assistance, indicating that the tech giant is aware that something is happening with the system, the report said.

Last month, the iPhone maker had announced that it is expanding its Advanced Data Protection option for users globally.

Meanwhile, in December last year, the tech giant had fixed a zero-day security vulnerability that was actively exploited on most iPhones, in its latest iOS software update.

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(This story has been edited by News18 employees and is revealed from a syndicated news company feed)