HTTP 403.9 with ADO.NET Data Services


If the error HTTP 403.9 may comes up when making multiple requests to an ADO.NET Data Service, the first thing to check is the operating system the server is running on. Windows XP and other client operating systems have a limit on the number of simultaneous connections that are supported.


The KB Error Message: HTTP 403.9 - Access Forbidden: Too many users are connected describes this situation in terms of Windows 2000 Professional, but this applies to other client systems as well.


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