Connect-SPOService -Url https://tenantch-admin.sharepoint.com -Credential ictcvazuresvc@tenant.ch
Connect-SPOService : The partner returned a bad sign-in name or password error. For more information, see Federation Error-handling Scenarios.
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+ Connect-SPOService -Url https://tenantch-admin.sharepoint.com -Credentia ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (:) [Connect-SPOService], IdcrlException
+ FullyQualifiedErrorId : Microsoft.SharePoint.Client.IdcrlException,Microsoft.Online.SharePoint.PowerShell.ConnectSPOService