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The MS-CHAP version 1 Authentication Protocol in Windows Vista

  • Article

Last week I had an attendee mention having issues when trying to get their VPN working. It was working on XP but now they are having issues with it on Vista. Here is the article that is most likely your symptoms as well as the resolution to your challenges. The title is "The MS-CHAP version 1 authentication protocol has been deprecated in Windows Vista. See the entire knowledge base article here. (https://support.microsoft.com/default.aspx/kb/926170)

Thanks,

Stephanie