I have a CentOS 5.4 server. I have installed pptpd (poptop VPN server). I have configured options.pptpd, pptpd.conf and chap-secrets files. My kernel also supports MPPE natively. The problem is when I want to connect to the server from a Win XP client, I receive the 619 error message. I have enabled PAP, CHAP and MSCHAP v2 in security section of the connection. Please assist me. to come over it.