External users can't find users in the people picker in SharePoint Online

PROBLEM
An external user tries to share a Microsoft SharePoint Online resource with a Microsoft Office 365 user. But when the external user types either the other user's name or a partial email address, the people picker doesn’t return results.
WORKAROUND
To work around this issue, external users must type the complete email address of the internal users to share anything within SharePoint Online with those users.
MORE INFORMATION
This issue occurs because external users can't run Active Directory queries in the people picker in SharePoint Online. 

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Article ID: 3194901 - Last Review: 12/29/2016 09:50:00 - Revision: 4.0

Microsoft SharePoint Online

  • o365 KB3194901
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