Hi All, I have some difficulties in configuring Web Synchronization with Merge Replication. Iâ€™m using SQL Server 2005 Standard Edition running on a Windows 2003 Server as the publisher, and the client is Windows XP computer running SQL Server Express edition. The Windows XP computer is not joined to the domain where the SQL Server Publisher is installed. For the testing purpose I put the 2 computers on the same subnet so that no router is required.I already follow the steps and instruction for enabling the Web Synchronization from the SQL Server Books online, and if Iâ€™m accessing the diagnosis screen of the â€˜SQL Server Replication Listener (replisapi.dll)â€™ I have the page told me that the listener functions well. For Server Certificate Iâ€™m currently using selfssl from IIS Resource kit. When I run the subscription wizard from the client, it also finished and created the subscription successfully, but the error starts to happen when I try to synchronize using the Windows Synchronization Manager. This is the error message:The Merge Agent could not connect to the URL â€˜https://myserver/rep_db1/replisapi.dllâ€™ during web synchronization. Please verify that the URL, internet login credentials and proxy server settings are correct and that the web server is reachable. From that error message I try to figure out 3 things - Verify the URL. This I did by accessing the diagnosis screen of the Replication Listener using the the same URL as above but with additional â€˜?diagâ€™. The server then ask me for the authentication, and I key in the user name/password that I also use the web server connection settings in the subscription definition, and I got a success message. - Internet Login Credentials : Can I presume that the login credential is ok when the above process succeeded ? Iâ€™m using the basic authentication method- Proxy Server Settings : I donâ€™t use any proxy server setting in this testing situations, and I already make sure that the proxy settings is cleared and the automatic proxy detection is also disabledThis replication things is really frustrating me, if I donâ€™t use the web synchronization features all this thing is running ok, but because Iâ€™m going to have some mobile users that needs to sync with the server from outside then I need to do this. Can anybody tell me what is wrong with my replication settings ?