[Easily] How to Fix iCloud Authentication Failed Issue

Why Does it Show Authentication Failed?

iCloud is Apple's cloud service, which supports data backup or synchronization across different devices. However, if you are experiencing iCloud authentication failure, you can't sign in to iCloud thus you can't access the backup data.

There are different reasons for the failure of iCloud authentication, such as:

• Some temporary glitches or bugs in the iCloud server.
• You enter the incorrect user information.
• The network connection is unstable.
• Two-Factor authentication issues.

Don't worry, this article will detail 6 solutions next. They can help you solve the iCloud not working effectively. Reading and choosing the one that suits your situation.

6 Quick Ways to Fix iCloud Authentication Failed Easily

How to fix the iCloud login verification failed issue? Below are the 6 quick and easy ways to help you, let’s take a look!

Way 1. Check iCloud is Working

The problem you're facing with iCloud sign in verification failed could likely be attributed to an issue with Apple's servers rather than your device. There may be a glitch within the iCloud server causing this inconvenience.

To address this issue, you just need:

Step 1. Visit Apple's System Page and check the status of iCloud services.

Step 2. Look for the iCloud Account & Sign In service.

Step 3. Ensure that a green dot is displayed next to it, indicating its normal functionality. If there is an ongoing issue with this service, Apple may provide a clickable link below it, offering potential solutions to resolve the issue.

If the iCloud service has a green dot next to it, try other methods below.

Way 2. Sign in Again with Your iCloud Account

Incorrect user information will cause the authentication error, such as an invalid or incorrect password, a deregistered account, or an expired session. In such cases, signing out of iCloud and then signing back in can be a quick way to verify your identity on your iPhone. Here's how to do it.

Step 1. Open Settings on your Apple device and tap your Apple ID > Scroll down and tap Sign Out.

Step 2. After logging out of the iCloud account, go to the main screen on Settings again, and tap Sign in to your iPhone.

While you enter the accurate account and password to sign in, you will be asked to enter the verification code as well. If you still fail to verify your iCloud authentication, reading continue.

Way 3. Change iCloud Password Code

In some instances, the iCloud Authentication Failed message may appear even when you have entered the correct password. To overcome this issue, a workaround is to change your iCloud password and then utilize the new password to log in again. 

Check the following steps to change your iCloud passwords：

Step 1. Open Settings and choose your Apple ID.

Step 2. Click the Password & Security option > Select Change Password.

Step 3. Entire in your screen passcode to create a new iCloud password.

Way 4. Reset Network Settings

An "Apple iCloud authentication failed" issue can also be attributed to a poor network connection. If you're using a cellular data network, it's important to ensure that cellular data is enabled for iCloud. Additionally, connecting your iPhone to a fast and stable Wi-Fi network can help resolve the issue.

If you're still unable to access the verification, an ultimate solution is to reset the network settings on your device. Here are steps below to do that:

Step 1. Open the Settings app > Choose General.

Step 2. Click Reset Network Settings > And then, tap Reset to perform an operation.

Way 5. Turn on Two-factor Authentication on iPhone

Two-Factor Authentication is a security measure to protect your iCloud account. When it is enabled, your iPhone will be trusted. In contrast, if the system marks your device as untrusted, an iCloud error during authentication can occur. To resolve this issue, you can follow the steps below to turn on Two-Factor Authentication:

Step 1. Open the Settings app > Click your ID name.

Step 2. Click Password & Security, you will view Two-Factor Authentication > Then, turn on the button.

Way 6. Restart the IOS Device

Finally, restarting your iPhone can be an effective way to reset settings and clear any stuck updates that may be causing issues. After you tried the above 5 solutions, if the iCloud verification not working, attempt to restart your iPhone. Below are the steps to restart the iPhone:

Step 1. Simultaneously press and hold the power button (located on the side or top of your iPhone) and either volume button.

Step 2. While the slide to power off slider appears on the screen > Slide the power off slider to turn off your iPhone.

Step 3. Wait for seconds, then press and hold the power button again to restart.

Bonus Tip: The Best iCloud Backup Alternative

After reading the above ways, hope you can get out of the issue of iCloud login failed. Besides authentication error, iCloud also has other problems, like iPhone won’t backup to iCloud, the storage space is full. If you are not satisfied with it, why don’t you try a simple and powerful alternative tool?

FoneTool is a professional app to manage iOS data. It allows you to fully and selectively backup your data with a few clicks as iCloud does. Also, it provides powerful functions like data transfer, HEIC conversion, or data erase. Download and install FoneTool on your Windows PC. And follow the instructions to learn how to backup iPhone data without iCloud.

Step 1. Connect your iPhone to the Windows by a USB cable.

Step 2. Launch FoneTool > Click Phone Backup > Choose Selective Backup > And tap Get Started.

Step 2. Click the + icon to preview and select the files you want to backup > And then click OK.

Step 3. Decide a storage path to save the backup > Click Start Backup.

Conclusion

Now you know how to fix the iCloud authentication failed issue. You can choose the one according to your needs. Besides the detailed guides of using the above 6 quick and easy ways, if you are looking for other alternatives to backup files on iPhone/iPad, we recommend you to use FoneTool to avoid other iCloud issues.