This content has been marked as final. Show 2 replies
There's a couple of things I'd check to start with - first, check that the case is right when you're searching for the username, because the search is case-sensitive. If the user has any publically shared items, you could also try searching for those items by using a search string like:
That way you could be sure the username was correct.
Second, I would go to the ArcGIS Online website, and check if you can invite the user that way, to rule out any problems with using ArcGIS Explorer Online.
Hope this helps,
The issue has been resolved. My colleague had registered for an Esri Global Account but hadn't logged into the arcgis.com site and linked the two. I don't know why this needs to be done, it defeats the purpose of a 'global account', but nevertheless we're all good now.
Thanks for your help.