The platform is up, but one dependency path is not.

Use this when login flow changed recently and the device still holds stale trust or token state against cloud identity. These issues are easy to misread because the operating system still responds while one control path, runtime dependency, or trust assumption is already out of alignment.

The symptom usually appears downstream from the real change.

• macOS assumptions are often changed indirectly by updates, policy, hardware changes, or cleanup work that looked harmless at the time.
• Platform SSO assumptions are often changed indirectly by updates, policy, hardware changes, or cleanup work that looked harmless at the time.
• Authentication assumptions are often changed indirectly by updates, policy, hardware changes, or cleanup work that looked harmless at the time.
• Identity assumptions are often changed indirectly by updates, policy, hardware changes, or cleanup work that looked harmless at the time.