"Upgrade is not authorised" error while trying to install MacOS Catalina.

Hey,

I am getting this strange popup saying "Upgrade is not authorised" while trying to install MacOs Catalina on my MacBook Pro which is currently running Mojave.

I have already tried deleting and re-downloading the update but still it gives me same error while installing.

Can anybody help me with this ?

Posted on Sep 15, 2020 12:06 PM

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"Upgrade is not authorised" error while trying to install MacOS Catalina.

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