Vault Cache sync - eratic connection behaviour

[EVSpinner]

Hi everyone, I've got a really weird Vault Cache sync issue (may not actually be EV at all - just need to prove it). Has anyone come across this before?

VC indicates a problem with sync in Outlook 

After a bit of troubleshooting the following was discovered

If I open up IE LAN settings, and the Automatically Detect Settings box is ticked, and I then untick it and retry VC, it immediately works

If I open up IE LAN settings, and the Automatically Detect Settings box is UNTICKED, and I then TICK IT and retry VC, it immediately works

Client diagnostics run during the negative behavior indicates 'Can't connect to EV'

I've checked client/server versions for compatibility - all ok

It happens for everyone

Trusted sites/Intranet sites all look like they have the prerequisites

I've run Wireshark and looked for connections during the negative behaviour, but nothing is being captured 

Anyone got any flashes of inspiration for how I can troubleshoot this further?

[JesusWept3 · Accepted solution]

do you actually have any proxies set at all?
i'm guessing when you get the Can't Connect to EVm if you open up IE and go to http://yourEVServer/EnterpriseVault/ it works, correct?

A better utiility for this would be Fiddler2 as its far more straight forward than wireshark

[EVSpinner]

Thanks JW, good call on resolving the url in IE. I've not tried that yet but will do. I'll establish this, and mark as solved shortly. cheers