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You get "Error code 64" when accessing Replisapi.dll through ISA server

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In a merge replication topology over the Internet, when you browse https://host/app_pool/replisapi.dll through an ISA server, you may receive the following error message: 

Error Code 64: Host not available
Replisapi.dll returns an HTML page that is intended just for testing purposes. The HTTP response that delivers this HTML message is not complete. The ISA server interprets this as an invalid response and closes the connection resulting in the error reported in the Symptoms section.
When testing your web synchronization topology in these environments, use https://host/app_pool/replisapi.dll?diag.
This issue does not cause any synchronization problems.
replisapi.dll; ISA server; Error 64
Note This is a "FAST PUBLISH" article created directly from within the Microsoft support organization. The information contained herein is provided as-is in response to emerging issues. As a result of the speed in making it available, the materials may include typographical errors and may be revised at any time without notice. See Terms of Use for other considerations.

Article ID: 2481773 - Last Review: 01/02/2011 19:11:00 - Revision: 1.0

Microsoft SQL Server 2005 Enterprise Edition, Microsoft SQL Server 2005 Developer Edition, Microsoft SQL Server 2008 Developer, Microsoft SQL Server 2008 Enterprise, Microsoft SQL Server 2005 Standard Edition

  • KB2481773