We recently began using the Sourcegear Vault Enhanced Client for Visual Studio. Intermittently we would receive errors accessing our Vault Server. Something to the effect of...
"The Vault server could not be contacted to perform the operation."
You'd try the operation a couple more times and eventually it would go through. After a bunch of digging I found a couple articles on the Sourcegear support forums that pointed me in the direction of the default proxy settings.
http://support.sourcegear.com/viewtopic.php?t=735
What was really interesting was that a> this happened usually when working offsite and b> it happened predominantly through the Visual Studio IDE Client... the normal Vault GUI was fine.
It turns out that this default proxy setting is stored in an app.config. When I compared the VaultGuiClient.exe.config with the devenv.exe.config (Program files\Microsoft VS 2008\Common7\IDE) I found that the Vault GUI had specified to use the system proxy settings while Visual Studio had specified that no proxy existed.
Since changing the devenv.exe.config to match the vault gui config the issue appears to have disappeared. Here's what our new devenv config file looks like... note that the defaultProxy section is the important bit.
