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Your Windows driver questions... answered.

Welcome to the OSR Developer Community!


Have you just discovered our community?
If so, welcome! You can read more about the community here including its history.

In short, this is the place to ask and answer questions about Windows system software development. The forum provides worldwide peer help with solving problems related to the design, development, and debugging of Windows drivers of all types (including WDF both KMDF, UMDF, even WDM device drivers and software-only drivers), Windows file system Minifilters, and Windows file systems. Are you having trouble figuring out how to do something in a driver you're developing? Do you have a crash in your driver that you're having trouble diagnosing? We have a forum for you!
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Please check out the Community Guidelines in the Announcements and Administration Category.

More Info on Driver Writing and Debugging


The free OSR Learning Library has more than 50 articles on a wide variety of topics about writing and debugging device drivers and Minifilters. From introductory level to advanced. All the articles have been recently reviewed and updated, and are written using the clear and definitive style you've come to expect from OSR over the years.


Check out The OSR Learning Library at: https://www.osr.com/osr-learning-library/


OSR Developer Community

Category List

  • Forum-wide announcements, rules, and questions/answers from the mods. Please read before you begin posting.
    RSS Feed 67 discussions 151 comments Most recent: Email access to the lists. by Peter_Viscarola_(OSR) May 23
  • Windows System Software Devs Interest List — Windows Driver Developer's Forum
    This is the category to post your questions about designing and developing all types of Windows drivers, particularly device drivers. Got a KMDF driver or UMDF driver question? Got a crash in driver that you need help analyzing? This is the category for you.
    RSS Feed 38.5K discussions 177.3K comments Most recent: UDP Socket port forwarding by parsa 1:46AM
  • Windows File Systems and Minifilters Devs Interest List — Windows File System and Minifilter Developer's Forum
    This category is dedicated to answering questions about the design, development, and debugging of Windows file systems and file system Minifilters.
    RSS Feed 15.2K discussions 49.8K comments Most recent: Strange minifilter behaviour by FLunky 12:45AM
  • Kernel Debugging Interest List — WinDbg Kernel Debugging Forum
    Bring your questions about kernel-mode debugging and crash dump analysis to this category, where !Analyze -v is only just the beginning.
    RSS Feed 2.9K discussions 10K comments Most recent: Querying Driver pooltag by Don_Burn May 28

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Upcoming OSR Seminars
OSR has suspended in-person seminars due to the Covid-19 outbreak. But, don't miss your training! Attend via the internet instead!
Kernel Debugging 30 Mar 2020 OSR Seminar Space
Developing Minifilters 15 Jun 2020 LIVE ONLINE
Writing WDF Drivers 22 June 2020 LIVE ONLINE
Internals & Software Drivers 28 Sept 2020 Dulles, VA