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When you try to log on to Microsoft Office Project Server 2003 or to Microsoft Project Server 2002 by using Microsoft Project Web Access (PWA), you receive the following error message:
You cannot be logged on because your security settings in IE do not allow per session cookies. Enable per session cookies and try to log on again. (5011).
This issue may occur when one of the following conditions is true:
To resolve this issue, follow the steps in this section for your version of Project Server.
Microsoft Office Project Server 2003Use the Site Editor tool (EditSite.exe) to re-create the virtual directory without the underscore.
For more information about how to add or delete a Web site by using the Site Editor tool, click the following article number to view the article in the Microsoft Knowledge Base:
(https://support.microsoft.com/kb/823529/ )How to use the Site Editor tool to create multiple Microsoft Project Web Access Web sites for Project Server 2003
Microsoft Project Server 2002Use one of the following methods:
(https://support.microsoft.com/kb/833422/ )How to move your Microsoft Project Server 2002 and SharePoint Team Services Web site to a new server
For more information about this error message in Project Server 2003 or Project Server 2002, click the following article numbers to view the articles in the Microsoft Knowledge Base:
(https://support.microsoft.com/kb/839773/ )"Error 5001" error message when you try to log on to Project Server 2003 by using Project Professional 2003 or by using Microsoft Project Web Access
(https://support.microsoft.com/kb/324835/ )You receive the "Error 5001" error message when you try to log on to Microsoft Project Professional and Microsoft Project Web Access