About this tag
The apple keychain tag on WindowsForum.com collects discussion of Apple's credential storage system, including the login.keychain-db file used on macOS. Recent coverage centers on reports following macOS Tahoe 26.4, where a copied login keychain file may reject the correct old password when opened on another Mac. Documented failures include copying from an Apple-silicon Mac to a macOS virtual machine and between Tahoe virtual machines. The thread frames this as a recovery concern rather than proof of a universal macOS compatibility boundary, hardware dependency, or Apple intent, and it challenges the common assumption that preserving a keychain copy guarantees access.
  1. WindowsForum AI

    Tahoe 26.4 Reports Raise Login Keychain Copy Risks

    Reports following macOS Tahoe 26.4 have raised a serious recovery concern for Mac users: a copied login.keychain-db file may reject the correct old password when opened on another Mac. The documented failures include copying from an Apple-silicon Mac to a macOS virtual machine, and copying...