Current site is not a tenant administrator site" error when connecting to SPO site collection (4237548)
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Errors and Solutions - Page 5 of 21 - SharePoint Diary
Your SharePoint tenant admin doesn't allow site collection admins... ⋆ Vladilen Microsoft 365 engineer
BUG] Connect-PnPOnline to a site collection using user credentials fails with the error "Current site is not a tenant administration site" · Issue #2917 · pnp/PnP-PowerShell · GitHub
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Connect-SPOService : Current Site Is Not A Tenant Administration Site