Communication error with a Remote Computer

In Archive Manager, you add a remote computer that is running Windows Vista or newer operating system and is a member of the domain.

You are logged on to the Archive Server with an account that has permission to connect to the Vista computer from the network. After the Vista system is added, you click it and wait for communication to be established. Eventually a yellow triangle appears in the remote computer icon. An error briefly appears in the bottom pane of Archive Manager stating the network path is not found, or the RPC server is unavailable. To view the error again, right click the computer and refresh. You do not receive an option in the Actions pane to add a protection plan.

Vista does not enable the Remote Registry service, which is required to remotely administer the system. Windows firewall may be preventing communication with the Archive Server. Other services also need to be running and have proper permissions to enable remote administration of the Vista computer.

Windows Vista does not enable and start the Remote Registry service by default. Verify this service is set to automatic and is started on the Vista system. 

1. Click the Start icon, right click Computer, and select Manage.
2. When Computer Management opens, select and expand the Services node.
3. Scroll to the Remote Registry service. Double click the Remote Registry service and set startup type to automatic. Click the Start button.

Try to establish communication with the Vista system from Archive Manager again. Right click the remote computer and select 'refresh'. If the Add Protection Plan action appears in the Actions pane, start the Add Protection Plan wizard. Otherwise, 

To verify that the firewall is preventing remote administration of the Vista computer, turn off the Windows firewall and any other third party firewall and try to reconnect to the Vista computer from Archive Manager.

1. On the Vista computer, click Start, Control Panel
2. Open Windows Firewall and change firewall status to Off. Click OK. 
3. On the Archive Server, open Archive Manager and navigate to the Vista computer under the Remote Computers node.
4. Click on the Vista computer. Right click and select Refresh.

If communication has been established an Add Protection Plan action appears in the Actions pane of Archive Manager. If you successfully connect to the Vista computer, you may add exceptions to the firewall and turn it back on following the steps outlined below.

There are four exceptions that need to be added to Windows Firewall with Advanced Security:

1. File and print sharing
2. Windows Management Instrumentation (WMI)
3. Core Networking
4. Remote Scheduled Tasks Management


If communication has not been established by turning off the firewall, check the following on the Vista computer.

1. Archive Manager uses the credentials of the account that is logged onto the Archive Server to connect to the remote server. So, make sure you are logged on with a domain admin account, and that the remote computer is in the domain. 

2. If still having trouble, you may need to check local group policy settings on the remote computer for log on locally, log on as batch job, log on as a service.

3. On the Vista computer, verify the following services are started: Remote Procedure Call, Remote registry, COM. Click Start, Run, and type services.msc and click OK. Search for the services and verify they are started.

4. Test the WMI remote connection with WMI Tester. On the Archive Server, Click Start, Run and type WBEMTEST and try to connect to the Vista computer by UNC path to the namespace, e.g. \\[computer_name]\root\cimv2 and click connect. If you receive an error message, check DCOM is running on the Vista computer and check DCOM permissions with DCOMCNFG. Go to Start/Run and type dcomcnfg and click OK. In dcomcnfg, navigate to My Computer/Properties/Default Properties and verify dcom is enabled with Connect and Identify set (any changes require a reboot). Go to COM Security tab and verify Launch and Activation permissions. The account logged in to the Archive Server must have Remote Launch and Remote Activation permissions. Add the account and check the permissions, if needed.