I am Global Admin on the tenant and site collection administrator on onprem SharePoint2013 . When I launch SPMT, I can login using my Global Admin O365 credentials for my destination/target. When I enter sp2013 onprem url, and want to select library (which I plan to migrate), I get login prompt and when I enter credentials get the error : You need to be site collection administrator. There is no proxy. spmt is installed on updated win 7 workstation not on the SharePoint2013 server. Any help, ideas ? Thank you.