Windows System Software -- Consulting, Training, Development -- Unique Expertise, Guaranteed Results

Home NTDEV

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/


Before Posting...

Please check out the Community Guidelines in the Announcements and Administration Category.

Tested driver replaced by Windows Update

Michal_VodickaMichal_Vodicka Member - All Emails Posts: 109
edited May 28 in NTDEV

Our QA were testing the driver under development and when a long stress test failed for a different reason they suddenly found tested driver was replaced by older version from WU. This one is WHQLed of course and tested driver was only signed by company certificate.

I'm checking WU and Setup API logs and can't find a reason why it happened. It is clear WU agent did it but why? I admit I can be missing something in WU log as it is almost unreadable, installation package is serialized and deserialized many times and the log has almost 60k lines in two days. So maybe there is a reason logged and I just can't see it. Seems to me like standard WU, package was downloaded and installed later.

Well, maybe it is supposed to work this way but it looks crazy to me. Any idea?

To be exact, this is what happened:

  • the device was plugged in the 1st time
  • WHQLed driver was automatically installed from WU
  • the driver was uninstalled manually from Device Manager
  • tested driver was installed manually from DM
  • many tests were run for two days
  • suddenly WU "updated" the driver to WHQLed one

I'm under impression this should not happen and there was some event which led to it. But I'm really unsure as WU is so screwed in Win10 I can't exclude intention.

Sign In or Register to comment.

Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

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!
Developing Minifilters 24 May 2021 Live, Online
Writing WDF Drivers 14 June 2021 Live, Online
Internals & Software Drivers 27 September 2021 Live, Online
Kernel Debugging 15 November 2021 Live, Online