Default Groups

Gerriet M. Denkmann

iOS app + Watch App + Watch App Extension all have Capabilities → App Groups → ON

The iOS app has a Settings-Watch.bundle.

The has:
Watch App → content of Settings-Watch.bundle/Root.plist

So far so good.

But I cannot read the defaults:

NSString *groupName = @"";
[standardUserDefaults addSuiteNamed: groupName ];

[User Defaults] Couldn't read values in CFPrefsPlistSource<0x16e47730>
( Domain:,
User: kCFPreferencesAnyUser,
ByHost: Yes,
Container: (null),
Contents Need Refresh: Yes

Using kCFPreferencesAnyUser with a container is only allowed for System Containers, detaching from cfprefsd

I can write these defaults (and these values persist) but are *not* reflected in the

What am I doing wrong?