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