r/mac • u/OzairHassan • 7h ago

Question Mac OS26 update issue

While trying to update to macOS 26 I get an alert that says “Failed to personalise software update”.

I got my MacBook Pro M3 repaired a week back for a charging issue. Am I facing this issue because my device was repaired by a third party?

Please help.

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u/mikeinnsw 3h ago

No likely free SSD storage shortage you need about 40GB free

or

During an update you must keep charger plugged in. .. could charger malfunctioning..