Fix Encrypt iPhone Backup Option Greyed Out

If the “Encrypt iPhone Backup” option in Finder or iTunes is greyed out, it’s usually because your iPhone is set to back up to iCloud rather than this computer, or because a previous encrypted backup exists and you need to enter its password first. The fix is to switch the backup destination to “This computer” and, if prompted, enter the old backup password. Below is a complete guide to resolving this issue, including background on why it happens and step-by-step fixes.

Why the Encrypt Backup Option Is Greyed Out

The encrypt backup checkbox is only active when your iPhone is set to back up to the computer you’re currently using. If your device is configured for iCloud backups, the local encryption option is disabled by default. Additionally, if you have previously created an encrypted backup on this computer, Finder/iTunes will require you to enter that backup’s password before you can change the encryption setting—until you do, the checkbox remains greyed out.

How to Fix It: Step-by-Step

Connect your iPhone to your computer using a USB cable. Trust the computer if prompted on your iPhone.
Open Finder (macOS Catalina or later) or iTunes (Windows or older macOS).
Select your iPhone when it appears in the sidebar (Finder) or the top-left corner (iTunes).
In the Backups section, look for the option “Back up all of the data on your iPhone to this Mac” (or “This computer” on Windows). Select that radio button.
Once selected, the “Encrypt local backup” checkbox should become active. If it is still greyed out, proceed to the next step.
If the checkbox remains greyed out, it means an encrypted backup already exists. You’ll see a message asking for a password. Enter the password you used previously. If you don’t remember it, you’ll need to reset it (see below).
After entering the correct password, the checkbox will be enabled. Check it, then click “Set Password” to create a new password or confirm the existing one.

What to Do If You Forgot the Encrypted Backup Password

If you’ve forgotten the password for an existing encrypted backup, there is no way to recover it—Apple does not provide a backdoor. The only solution is to erase the old encrypted backup from your computer. This will delete all previous encrypted backups, and you’ll lose the data in them, but it will allow you to create a new encrypted backup with a new password.

On macOS: Go to System Settings > General > iPhone Storage (or iTunes > Preferences > Devices on older versions). Find your device’s backups, right-click and select “Delete Backup.”
On Windows: Open iTunes, go to Edit > Preferences > Devices, right-click the backup and choose “Delete Backup.”

After deleting, reconnect your iPhone and the encrypt option should no longer be greyed out.

Why Encryption Matters for iPhone Backups

Encrypting your local backup adds a layer of security that protects your data with a password. This is especially important because an unencrypted backup does not include certain sensitive information: saved passwords, Wi-Fi settings, health data, and HomeKit data are only included in encrypted backups. If you want a complete copy of your iPhone’s data on your computer, encryption is not just a nice-to-have—it’s the only way to get everything.

Common Problems and Solutions

Checkbox greyed out even after selecting “This computer”: This often happens if you haven’t clicked the radio button properly or if the device is syncing. Try unchecking and rechecking the radio button, or restart Finder/iTunes.
Password prompt appears but you never set one: This can occur if a previous encrypted backup was created by another user or a different computer. Try entering common passwords you use, or delete the backup as described above.
Encrypt option greyed out on Windows: Ensure you have the latest version of iTunes installed. Older versions may have bugs that disable the option.
Backup fails after enabling encryption: Make sure your computer has enough free storage space. Encrypted backups are larger than unencrypted ones.

Comparing Encrypted vs. Unencrypted Backups

Understanding the difference helps you decide if encryption is worth the hassle. Here’s a quick comparison:

Encrypted: Includes all data (passwords, health, HomeKit), requires a password to restore, and is stored in a secure format. Slightly slower to create due to encryption overhead.
Unencrypted: Excludes sensitive data, can be restored without a password, and is faster to create. If someone gains access to your computer, they can read the backup contents.

For most users, encryption is recommended because it protects your most sensitive information and ensures a full backup.

Frequently Asked Questions

Why is the encrypt backup option greyed out on my iPhone?

It’s greyed out because your iPhone is set to back up to iCloud, not your computer. Switch the backup destination to “This computer” in Finder/iTunes to enable it.

Can I encrypt an iCloud backup?

iCloud backups are always encrypted by Apple, but you don’t get a separate password. The encryption is automatic and tied to your Apple ID. The local encryption option only applies to computer backups.

What happens if I forget my encrypted backup password?

You cannot recover it. You’ll need to delete the old encrypted backup from your computer and start fresh. This means you’ll lose any data that was only in that backup.

Does encrypting a backup slow down the backup process?

Yes, encryption adds a small amount of processing time, but the difference is usually negligible on modern computers. The main factor is the amount of data being backed up.

Can I use the same password for encrypted backups on multiple computers?

Yes, you can set the same password on each computer, but they are independent. Each computer stores its own encrypted backup with its own password.

Is it safe to store encrypted backups on an external drive?

Yes, it’s safe as long as you keep the password secure. The encryption protects the data even if the drive is lost or stolen.

General steps for current mainstream versions; menus can differ by device and version. See the disclaimer or report an error.

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