SecurityAppleInsiderabout 1 hour ago
macOS Tahoe Update Blocks Keychain File Copying
1 min read
Apple's macOS 26.4 update, released in March, prevents users from manually copying the login Keychain file from one Mac to another. The change binds the Keychain to the device's Secure Enclave, making it unreadable on a different machine. This breaks a previous method for transferring credentials, potentially affecting administrators performing bulk migrations.
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