Export Credential Manager to PowerShell

If you ever find yourself in a sticky wicket and need to extract usernames and passwords from Credential Manager (usually because you forgot them), you can use this handy-dandy little function from PowerShell:

function ExportCredMan
    # Dump local passwords from credential manager
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Resolved: SharePoint Online web site does not support SharePoint Online credentials

This afternoon, while working on my upcoming book for the MS-300 exam, I was attempting to sign into SharePoint Online via PowerShell and encountered this moderately cryptic message:

Cannot contact web site '' or the web site does not support SharePoint Online 
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