Client Deployment Tool: Installation Error - Windows Error 0x800704c3

We’re using the Client Deployment Tool from one of our relays, and we get this error for some of the Windows systems but not all of them, “Installation Error - Windows Error 0x800704c3: Multiple connections to a server or shared resource by the same user, using more than one user name, are not allowed. Disconnect all previous connections to the server or shared resource and try again.” Any ideas? I’ve attached a screen cap. Thanks!

That’s a common Windows error, unfortunately. You can reproduce this on the command line, if you like, with commands like

Net use \\server1\share1 * /user:DOMAIN\useraccount1

Followed by

Net use \\server1\share2 * /user:DOMAIN\useraccount2

What this implies is that the user account you entered in the wizard for “user account to use on the deployment point” already has an open session on the target endpoint, and connected to that share with different credentials compared to the username/password you supplied for “credentials to use on the target endpoint”.

If you’re using your own credentials for the deployment point, the easiest thing would be to log off any existing logon sessions you have on that serverb or at least disconnect your network shares.

Ideally, you could use a separate, dedicated “service account” on the deployment point.

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We’ll take a look and see if that’s what’s going on. Thank you for the reply!

Do you know if the Client Deployment Tool closes connections after it’s done?

I’m really not sure.

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No worries! Appreciate it!