Introduction

The "User Cannot be Found" error occurs for a number of different reasons which typically relate to database corruption on the SharePoint server. Sometimes it happens when user accounts are deleted and then recreated, when changes are made to the domain structure, from an improper backup and restore, and for other reasons that are currently under investigation. Other non-User objects may also be affected and could have related causes. Microsoft is aware of these issues and has several Knowledge Base articles detailing the causes of the "User Cannot be Found" error.

This KB article will be updated if more information becomes available from Microsoft about these and related errors due to database corruption.

User Cannot be Found KB Articles and Hotfixes


Error message when you try to manage a site collection in Windows SharePoint Services 3.0 or in SharePoint Server 2007: "User cannot be found"

Description of the SharePoint Server 2007 hotfix package (Coreserver.msp): August 26, 2008

Description of the Windows SharePoint Services 3.0 hotfix package (Sts.msp): October 28, 2008

Description of the Windows SharePoint Services 3.0 hotfix package: March 21, 2008

Error message when you try to manage a site collection in Windows SharePoint Services 3.0 or in SharePoint Server 2007: "User cannot be found"

General SharePoint Information from the SharePoint Products Tech Center

This information may assist you in determining if your current SharePoint architecture and administration could be causing errors.

Best practices

Back up and restore an entire farm (Office SharePoint Server 2007)

Physical storage recommendations (Office SharePoint Server)

Best practices for operational excellence

Tips for improving backup and recovery performance (Office SharePoint Server)

Data protection and recovery for Office SharePoint Server (White paper)