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I have tried installing macOS Big Sur on my system but I am getting the following error message:

macOS Big Sur install problem

I have tried disabling Gatekeeper but it makes no difference.

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    Which Mac do you have, from which version are you upgrading, did you try deleting the installer and downloading it again? – nohillside Nov 20 at 19:07
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    ...And this is all assuming you are upgrading using System Preferences > Software Update? And not from something you downloaded elsewhere? – Steve Chambers Nov 20 at 20:42

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