Remote Access to Server not Enabled
WMI comes installed on all of Microsoft's modern operating systems (Windows 2000, Windows XP, Windows 2003, Windows Vista and Windows 20081). What this page will describe is how to enable remote access to WMI. The following steps should only take a minute or two of your time.
1. Enable remote WMI requests
This setting is usually all that needs to be changed to get WMI working. (Steps 2 and 3 are typically not needed, but they might be in some circumstances)
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At this point go back and see if this fixes the problem. It might take a couple of minutes for the reports to re-generate.
2. Allow WMI through Windows firewall
All users (including non-administrators) are able to query/read WMI data on the local computer.
For reading WMI data on a remote server, a connection needs to be made from your management computer (where our monitoring software is installed) to the server that you're monitoring (the target server). If the target server is running Windows Firewall (aka Internet Connection Firewall) like what is shipped with Windows XP and Windows 2003, then you need to tell it to let remote WMI requests through2. This can only be done at the command prompt. Run the following on the target computer if it is running a Windows firewall:
netsh firewall set service RemoteAdmin enable
3. Enable DCOM calls on the remote machine
If the account you are using to monitor the target server is NOT an administrator on the target server, you need to enable the non-administrator to interact with DCOM by following the simple steps listed here. Follow the steps for:
- To grant DCOM remote launch and activation permissions for a user or group
- To grant DCOM remote access permissions
If the above steps didn't help, we recommend installing the WMI Administrative Tools from Microsoft. This includes a WMI browser that will let you connect to a remote machine and browse through the WMI information. That will help to isolate any connectivity/rights issues in a more direct and simple environment. Once the WMI browser can access a remote machine, our products should be able to as well.
WMI Administrative Tools:
From reports we're receiving from the field, it appears UAC needs to be disabled for remote WMI queries to work. With UAC running, an administrator account actually has two security tokens, a normal user token, and an administrator token (which is only activated when you pass the UAC prompt). Unfortunately, remote requests that come in over the network get the normal user token for the administrator, and since there is no way to handle a UAC prompt remotely, the token can't be elevated to the true-administrator security token.
See "To Configure Connection 1". Our software doesn't use or need Connection 2.
Other helpful pages
Connecting to WMI Remotely Starting with Windows Vista
Connecting to WMI on a Remote Computer
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