SharePoint 365 connection error "The 'username' argument is invalid.Microsoft.SharePoint.Client.Runtime

Nov 16, 2016 at 1:14 PM
Hi there,

last week it worked but it doesn't anymore. I've tried with he same xml files and site I used for testing but same results, while last week I could upload many documents.

Any idea?

Now I'm getting this error:
About to connect to destination :
Exception during import : The 'username' argument is invalid. : Microsoft.SharePoint.Client.Runtime :

Nov 16, 2016 at 2:33 PM
Edited Nov 16, 2016 at 2:34 PM
Can you provide additional detail on the problem

See help using DIFS
Nov 17, 2016 at 8:54 AM

sorry I didn't close this threat.

There was some maintenance in our servers and by accident some switch was changed.

Everything works fine now.


Marked as answer by MadAboutImport on 11/17/2016 at 1:01 AM
Nov 17, 2016 at 9:01 AM
Thanks for letting us know.