Cannot delete the system Keychain key

I have a bit of a problem to remove the keys (the keys) in the Keychain system on my iMac. Here's what happens:

  1. I go to Keychain Access and select system in the keychains list.
  2. I have unlock keychain using my admin password (the icon will change from locked to unlocked).
  3. I click on the key that I want to remove and select Remove "the key I want to delete.
  4. I get a box that says "Keychain Access tries to change the Keychain system, type your password to allow this." Then I do.
  5. I get a box that says: "are you sure you want to remove"the key I want to delete"in the system keychain? I click 'delete '.
  6. I get a box that says "an error occurred when deleting"the key I want to remove"UNIX [operation not permitted].

I'm not able to change the information in one of the keys to the system, nor am I able to add new keys to the system keychain. My Keychain system contains 20 items - who are all the passwords either WiFis, passwords to Machines for time (which is what I want to delete) and a password to the guest account application. That being said, I would have no problem 'reset' the system keychain to default (empty) condition.

I also have a MacBook, which does not exhibit this problem. That is to say that I can freely edit, delete and create keys in the system keychain. I followed the instructions here to back up the system keychain to my MacBook and install it on the iMac, but get an error message saying 'Operation not permitted '.

Any ideas?

Thank you!

Please post a screenshot that shows what keys you are trying to change. Please do not include personal information.

Start a reply to this message. Drag the image file in the editing window downloading. Alternatively, you can include text in the response.

Tags: Mac

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