Apple’s Worldwide Developers Conference to kick off June 10 at 10 a.m. PDT with Keynote address

The Keynote will be available to stream on apple.com, the Apple Developer app, the Apple TV app, and the Apple YouTube channel. On-demand playback will be available after the conclusion of the stream.

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MZFinance.BadLogin

Hey,


I recently re-installed my macOS so now I am currently running Yosemite. However, when I click the upgrade button to upgrade to Sierra, it asks me to log in with my Apple ID. When I click login, I get the following error:


MZFinance.BadLogin.MacAppStore_message

I am able to login with my Apple ID anywhere else but not here in the App Store.


Any ideas on how to fix this issue?

MacBook Air, OS X Yosemite (10.10.5), null

Posted on Apr 22, 2017 5:44 AM

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32 replies

MZFinance.BadLogin

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