An unexpected error occurred on a send

Hi,

We have a number of different client installations with VPN tunnels to connect to the update server. A Windows service uses wyUpdate to periodically check for updates using https. All servers with the exception of one work just fine.

The error that this particular installation receives from wyUpdate is as following:[Unable to check for updates, the server file failed to load.Error trying to save file: Error downloading "https://server-name/.../wyserver.wys": The underlying connection was closed: An unexpected error occurred on a send.]

Even if we try to execute wyUpdate.exe from the command line with the same parameters, i.e., outside of the Windows service application, the error still occurs.

Is there something specific with that machine's configuration that may prevent wyUpdate to check for updates?Anything that should be tried to troubleshoot further?

Thanks a lot,Alex

Is there something specific with that machine's configuration that may prevent wyUpdate to check for updates?

Yes, about a billion things (hence the generic message). My guess: a local firewall or proxy is blocking the connection to your server. You'll have to use WireShark to see exactly what's wrong with the connection. Also see if they can download the wyserver.wys file from a browser. If not, then there's something on the computer (e.g. hosts file, firewall, proxy, etc.) or something in the LAN (faulty hardware, hardware firewall, proxy, etc.) that's blocking the connection.

Thanks, Wyatt!

You're right about the connection being blocked.It turned out that Websense was configured to *not* allow connectivity to our update server.

Allowing the traffic to the server past Websense fixed the problem.

Thanks again,Alex

Great, glad I could help.

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