2780050 - You observe the following error message when uploading e-mail via the outlook add-in "The number of elements that can be open at any one time, was limited by the server administrator"

You are uploading e-mails via the Outlook Add-In  and you get the following error "The number of elements that can be open at any one time, was limited by the server administrator".

SAP Hybris Cloud for Customer

client side integration, outlook add-in, limited, number of elements, sync E-Mail, e-mail upload, "The number of elements that can be open at any one time, was limited by the server administrator", "Die Anzahl der Elemente, die gleichzeitig geöffnet werden können, wurde vom Serveradministrator begrenzt.Schließen Sie zunächst geöffnete Nachrichten, oder entfernen Sie Anhänge und Bilder von ungesendeten Nachrichten, die Sie gerade verfassen." , KBA , LOD-CRM-GW-OUT , Outlook , Problem