Here is a fix for a pernicious error that prevents users from accessing a Debian server that offers TimeMachine disk space.
The very helpful ( /s) error message:
Keychain error 100001 occurred while creating a System Keychain entry for the username “user name” and URL “afp://user name@my_Airport._afpovertcp._tcp.local./backup”. |
At this point, check - in the terminal - if your access to the keychain is restricted:
ls -l @Oaen /L*/Keyc*
If so, this might help:
Boot the Mac into ‘Recovery Mode’.
Shutdown, and restart-while-holding the ‘command’ and ‘r’ keys. So, not command R, just r. You hold until the Apple logo appears. If this is the first time you boot into Recovery Mode, you’ll have to accept some licence terms. TLDR;
open terminal, which you can find in the Utilities menu.
chflags norestricted /V*/*/L*/Keyc*/*
- login as you would usually, and again, open terminal
sudo -s xattr -c /L*/Keyc*/*
After this, you can use your TimeMachine.
thanks to Linc Davis, detailing this on Apple’s discussion forum.