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After upgrading, MSC may show Sequoia upgrades are available even though you just completed the upgrade. Refer to this Apple Support Page to confirm what version of macOS is installed.
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Please Please do not run the upgrades again if this happens. This is an anomaly in MSC caused by MSC not doing a full check after the upgrade has been applied. To clear the erroneously offered upgrades, reload the MSC window by choosing "Reload Page" from the Navigate menu within MSC.
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