Article ID: 925880 - View products that this article applies to.
Consider the following scenario:
Error Code: 502 Proxy Error.
The login request was denied. The logon account might have been disabled or logon information might have changed. Log on again to verify that the information was typed correctly. If the problem continues, report the problem to the administrator of the Internet server you are requesting.(12015)
This issue occurs if ISA Server, Microsoft Forefront Threat Management Gateway, Medium Business Edition, or Windows Essential Business Server 2008 does not send the authentication information to the FTP server in the first request. The FTP server closes the connection if the anonymous authentication information is not received in the first request. ISA Server, Microsoft Forefront Threat Management Gateway, Medium Business Edition, or Windows Essential Business Server 2008 usually sends the authentication information to an FTP site in the first request.
Note If you monitor FTP traffic, you may see an entry that resembles the following when the connection fails:
Port: 21 ftp Failed Connection Attempt User: anonymous Request:GET ftp://FTP_Server
To resolve this issue, log on to the FTP server by including a user name and a password in the URL. Use the following format:
ftp://User_Name:Password@FTP_ServerNote When you follow these steps to log on to a secure FTP site, the user name and the password may be displayed in plain text in the Internet Explorer title bar or status bar.
If you monitor FTP traffic after you log on to the FTP Server by using this format, you may see an entry that resembles the following:
Port:21 ftp Allowed User: anonymous Request:GET ftp://User_Name:*****@ FTP_Server /
For more information about how to set the password that is used when FTP mediates anonymous requests by using the WebProxyFtpClientPassword property, visit the following Microsoft Web site:
Article ID: 925880 - Last Review: December 4, 2007 - Revision: 1.5