WMI Explorer allows you to browse WMI classes, objects and their properties and execute any WMI query.

Mike Taylor

Mike Taylor has been working in IT for 12 years. He is a Windows administrator, scripter and OS deployment engineer based in London.

This is part three of a three part series of articles covering two great WMI tools, the second and final tool being WMI Explorer.

WMI Explorer v1.10 is another lightweight (at 533KB), portable tool. To demonstrate its abilities I need to use WMI to find something I don’t already know and without using any books or the web. My example is to list the games I have installed and the path. The first step is to connect to a different namespace, as in the screenshot below.

WMI Explorer - Connecting to different namespaces

WMI Explorer - Connecting to different namespaces

The interface lets you click on the open book icon to open a browse window, or you can just type directly into the namespace field if you already know what you want. You can also enter security credentials if you need to.

Clicking OK takes you to the main screen.

WMI Explorer - Browsing a WMI class

Browsing the "game" class with WMI Explorer

I want to see what properties exist for the “game” class, so selecting “game” in the top window queries the machine and gives you live results in the bottom left window. The right-hand window obviously lists the properties at your disposal. Note, the query field defaults to the favourite “select * from”. I did not type that string, WMI Explorer wrote it for me. Clicking "Execute" reveals the answer to my example, in figure 7.

WMI Explorer  - The output

The output from WMI Explorer

So, now you can the list of games in the name column and thus see my taste in games but that’s not quite the end of the story. You can now fine tune your WMI query and potentially speed it up. Note the time in the status bar at the bottom of figure 6, as 0.11 seconds.

WMI Explorer - The Win32_Volume class, Vista or later

The Win32_Volume class, Vista or later

Whilst this is just a basic example the issue of efficient queries is vital if you intend to run a script on machines remotely. Owing to the sheer wealth of data that WMI provides, the results can quickly get out of control. For example the trivial task of scanning machines for how much disk space they have left is easy using the win32_Volume (figure 8).

However it has 44 properties, so even running on 100 machines will scale up to 4400 properties. Rather than query everything with the crude use of “*” you can be more selective and choose only the properties you want. You probably know you achieve this using either the “where” clause or specifying explicit properties alone. Figure 9 shows just the name and path of the games on this machine. Note the time is now only 0.08 seconds.

WMI Explorer -WMI query

A more efficient WMI query, perhaps

Using the two tools will make your job easier at the very least, but better still will help you to not upset the network team by dragging all the obscure WMI properties you don’t need over the LAN or worse over a low bandwidth and expensive leased line.

WMI Explorer ^

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5 Comments
  1. Justin 8 years ago

    Doesn't seem to be free.. Maybe I'm missing the link??

    0

  2. Michael Pietroforte 8 years ago

    Added another link at the bottom. Why do you think WMI Explorer is not free? HostMonitor is not free.

    1+

  3. Justin 8 years ago

    Got too excited and flew right by the download page link at the top of the page. Sorrrry! 🙂

    1+

  4. Natalie 7 years ago

    The WMI Code Creator is no longer available for download.. Is it archived somewhere? I need to create a VBS using WMI to copy a file from an admin host to a remote host. RPC is not available. Any ideas?

    1+

  5. wewer 6 years ago

    Look at free WmiAxon from http://www.geneosoft.com

    1+

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