I am trying to connect SDL Tridion content manager using visio to open/save workflows, am getting the below error message, can you please help me on this?
The request failed with HTTP status 407: proxy authentication required (The ISA server requires the authorization to fulfill the request. Access to the web proxy filter is denied).
It sounds like you have some form of HTTP proxy running on your network which is preventing you from making a direct call to the CMS using the visio client. Could that be the case?
To test this, you might consider installing Visio on the CMS server itself, and trying to connect using a localhost or 127.0.0.1 address (these should bypass any proxies) rather than the DNS entry based name that you are using now.
If that works, we may be able to find a solution for connecting remotely.