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After I updated my MacBook Pro (15-inch, 2018) to BigSur 11.1 something went wrong. I can log in, I can change the admin users password, I can access my keychain and I can run sudo with no issues.

What I can't do though is to click the padlock to make changes in System Preferences. Even when I enter the correct password the dialog behaves as if I entered the wrong password.

Any help appreciated.

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Ok so apparently this was easily solved by resetting the SMC (system management controller) https://developer.apple.com/forums/thread/649884?login=true&page=1#618964022

Instructions on how to do this can be found here https://support.apple.com/en-ca/HT201295

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