There is a known issue in SilkPerformer 2007 which causes virtual users to fail when accessing a secure (HTTPs/SSL) application via an NTLM-authenticated proxy server. The problem can specifically occur when replaying secure traffic through an ISA proxy server that uses NTLM authentication. For example you may find that after specifying a Proxy Server in the SilkPerformer Active Profile Settings and then using the function WebSetProxyAuthNtlm function that you are able to successfully replay a script that access a non-secure (HTTP) web site but cannot access any secure web sites (HTTPs). This can lead to the following error message occurring during replay: WebPageUrl(HTTP: 407 - proxy authentication required, RespHdrAuthNTLM) A patch named "SP7.6_patch_01.zip" has been released which resolves this problem. To obtain a copy of the patch please contact Technical Support.
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