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10403 error not found

I am unable to update my MacOS high sierra to 10.13.6. I am getting an error 10403 not found. What does the error mean?


Posted on Oct 5, 2020 8:51 AM

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Question marked as Top-ranking reply

Posted on Oct 5, 2020 9:28 AM

Are you usingFirefox?


Try reinstalling this in Safe Mode, but not using Firefox...


https://itunes.apple.com/app/macos-high-sierra/id1246284741?mt=12


Safe Boot, (holding Shift key down at startup).

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10403 error not found

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