FindMy stopped working

[terryburton2016-collab]

When I check the location of my loved ones it only shows one person and shows location not found with other people. It used to work but stopped. What do I need to do

[parawanderer]

For anyone landing here on the HTTP 503 sign-in failures: the cause is known and fixed.

Apple's edge refuses any Grand Slam request whose X-MMe-Client-Info names com.apple.dt.Xcode, before any credential is examined — it returns a small HTML error page rather than a GSA plist, which reaches clients as HTTP 503 and looks like an Apple outage. Reporting the client as com.apple.akd, the daemon that actually makes this call on macOS, is answered normally.

Nothing to do with any particular account, password, network or machine. It broke every client that hardcoded the Xcode identifier, at once.

Found and isolated by AltStore: altstoreio/AltStore#1790 (shipped in AltServer 1.7.6). They established that only the app token matters — the version, the user agent and the hardware portion of the header make no difference.

Fixes per project:

• AltStore / AltServer — 1.7.6 and later
• FindMy.py — fix: report the client as akd, not Xcode, to stop Apple refusing sign-in with 503 malmeloo/FindMy.py#271
• anisette-v3-server — change auth client type from xcode to authkitd to fix 503s Dadoum/anisette-v3-server#60 (merged)

Reproducible without an account, if you want to confirm it yourself:

curl -so /dev/null -w '%{http_code}\n' -X POST --data-binary t \
  -H 'X-MMe-Client-Info: <Mac14,2> <macOS;15.7.5;24G624> <com.apple.AuthKit/1 (com.apple.dt.Xcode/3594.4.19)>' \
  https://gsa.apple.com/grandslam/GsService2      # 503

curl -so /dev/null -w '%{http_code}\n' -X POST --data-binary t \
  -H 'X-MMe-Client-Info: <Mac14,2> <macOS;15.7.5;24G624> <com.apple.AuthKit/1 (com.apple.akd/1.0)>' \
  https://gsa.apple.com/grandslam/GsService2      # 401 — it reached the service

Interactively co-authored by Claude Code and @parawanderer