User is receiving Mac Keychain Errors
Keychain Errors on Mac
Objective
User has recently changed their local login password and now Keychain errors are popping up every time they try to do something, especially in Safari.
Procedure
Log in as the USER who is experiencing the keychain problem and open Keychain Access via one of the below methods:
Open the Applications folder via Finder (Go menu > Applications) or by clicking on the Macintosh HD then Applications folder
Open Utilities folder
Double-click Keychain Access
OR
Under Go menu in the Finder
Select Go to Folder...
Type ~/Library/Keychains/
Click Go
Double-click on the login.keychain file
This will open the Keychain Access application.
In Keychain Access...
If the user remembers their old Keychain password:
Highlight login on the top left in the window that appears (listed under Keychains)
Select "Change Password for Keychain "login"" from the Edit menu
The user will be prompted to enter the old Keychain password before being able to reset the password
Additional Notes
Alternatively, once in the ~/Library/Keychains/ folder, move the long alpha-numeric keychain file to the Desktop and restart the machine. This will create a new Keychain file once logged back in. All saved passwords will be lost using this method, but this will resolve the Keychain issue in extreme cases.