KMDF Debugging Videos

A while ago, I wrote a blog post about our UMDF debugging videos, which were created by my teammate Abhishek. Now, I’m really excited to announce that we’ve released KMDF debugging videos, which can be found at http://www.microsoft.com/whdc/devtools/debugging/kmdf.mspx. These videos were created by my teammate Kumar. They present 3 important aspects of KMDF debugging: 1)…

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WDF Logo Requirements Regarding Coinstallers

I’ve been asked many times, if a driver developer can avoid using WDF coinstallers. The answer is “yes, if the system already has the needed version of WDF installed (e.g. you want to install a WDF 1.5 driver in Vista RTM)”. So, the next question that usually comes up is “Will I be able to…

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Viewing WDF Logs In Windbg

One feature that is really helpful in debugging WDF drivers is the log file that is created by the frameworks themselves. In the log files you can see many warnings and errors that are created by the framework (i.e. they come for free and the driver does not have to do anything). Did you ever…

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Analyzing the Installation of WDF 1.7 and 1.9 drivers

Many months ago I had written a post analyzing the installation of WDF 1.5 drivers. Now that WDF 1.9 is almost out of the door, it’s time to do the same thing for WDF 1.7 and 1.9. The differences in the coinstallers for these 2 versions are small, so the installation experience is almost the…

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How to install WDF drivers (Quick-Start)

This post is a small quick-start on how to install WDF drivers. Part 1: Installing a UMDF driver You can start with the echo sample, which is located at %WinDDK%\6001.18002\src\umdf\echo. First, you need to do a bcz in that directory. In your output directory you should see the following files: 1) WudfEchoDriver.dll: This is the…

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The WDF team needs your help in ensuring compatibility

You might know that the Windows Driver Framework team is working on the next version of WDF, version 1.9, and planning to release it with Windows 7. Windows 7 will have this new version of framework built in. However, we will also provide a redistributable coinstaller so that you can install this framework on downlevel…

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WinHEC 2008 Presentations

As many of you know, WinHEC 2008 took place in Los Angeles, at the beginning of this month. I gave a presentation in the conference with Bob Kjelgaard about the WDF coinstallers and WDF logo requirements. This presentation includes a step-by-step walkthrough of the execution of the coinstallers, their contents, the methodology that we are…

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When Is WDF 1.7 RTM Coming Out?

UPDATE 10/02/2008: The WDF 1.7 RTM coinstallers were released on 4/18/2008. For more information on how to download them, please look at http://blogs.msdn.com/iliast/archive/2008/10/02/where-are-the-wdf-1-7-rtm-coinstallers.aspx     Lately, I’ve been hearing the same question over and over: Where is the WDF 1.7 RTM? Many driver developers have gone to the onConnect website and there they see the…

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Why Do We Need WDF Coinstallers?

Lately, I’ve been hearing lots of questions like “why do we need this bloated KMDF/UMDF coinstaller?” or “why don’t you use an msi” or “why doesn’t a WDM driver always need a coinstaller?”, etc both in some mailing lists and in emails. So, I’d like to throw some light into this issue. First of all,…

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Analyzing the Installation of UMDF and KMDF 1.5 drivers

The goal of this post is to provide an insight about the installation of UMDF and KMDF 1.5 drivers and to show how to overcome any potential problems. For demo purposes I’ll be using the UMDF and KMDF echo driver, which can be found at the WDK (%WinDDK%\6000\src\umdf\echo for UMDF and C:\WinDDK\6000\src\kmdf\echo for KMDF).Let’s start…

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