WDS Boot PXE: Fix the 0xc0000001 Error


When you try to start a computer in PXE from a WDS server, the following error is displayed when loading the image:

Windows failed to start. A recent hardware or software change might be the cause. To fix the problem:
1. Insert your Windows installation disc and restart your computer.
2. Choose your language settings, and then click “Next.”
3. Click “Repair your computer.”
if you do not have this disc, contact your system administrator or computer manufacturer for assistance.
Status: 0xc000000l
Info: A required device isn’t connected or can’t be accessed

pxe error wds

The problem appears after you install the March 2019 updates.


The maximum block size of the TFTP server must be changed.

1. Open the WDS console, right click on the server 1 then click on Properties 2 .

2. Go to the TFTP 1 tab, block size enter 4096 or more 2 . Uncheck Enable Variable Window Expansion 3 and click Apply 4 and OK 5 .
TFTP config

3. Restart the WDS service. Right click on server 1 / All tasks 2 / Restart 3 .
Restart service


How useful was this post?

Click on a star to rate it!

Average rating / 5. Vote count:

We are sorry that this post was not useful for you!

Let us improve this post!

Related Posts

MDT: saving user profiles with USMT
Introduction In this article, we will have how to back up user profiles with MDT during a deployment. Use of this feature is useful in the following cases: Change of computer of a user. Reinstalling the computer Upgrade version of Windows. To save th

MDT: Install updates with WSUS
Presentation In this tutorial, I'll explain how to enable Windows updates to a WSUS server when deploying an image with MDT. Enable updates Open the properties of an installation sequence, go to the Task Sequence << 1 >> tab and activate

MDT: use with a database
In this tutorial, we will see how to use MDT with a database. The use of this one makes it possible to store in a database the information of deployment for a station to identify for example by its MAC address, which makes it possible when one has to

11 thoughts on “WDS Boot PXE: Fix the 0xc0000001 Error”

  1. After years of running MDT with no problem suddenly my PXE boots started failing with the error shown in your Symptom section. I was out of ideas until I ran across this. It fixed the issue on 2 different servers I was having the issue on. Thanks for sharing!

    • Hello,
      I found myself in the same situation, years of use without problems. I think the problem comes from a recently installed update

      • I can confirm, the latest Windows update was the problem for me also. After uninstalling the update, the error was gone and MDT started as it used to.

Leave a Comment