Office 365 not connecting to OneDrive for Business

Not sure what the solution here is as I've "disconnected" my personal account years ago, just wanted to mention that such configuration is no longer supported by Microsoft and you can expect other issues to keep popping up. Here's the blog post where they originally announced this: https://techcommunity.microsoft.com/t5/Azure-Active-Directory-Identity/Cleaning-up-the-AzureAD-and-Microsoft-account-overlap/ba-p/245105