I'm having issues with PXE booting to our distribution points. We're running version 2509, which we updated on January 21st, 2026. After the update we've been able to run unknown computer deployments without issue up until a few weeks ago. Now, anytime we deploy a UCD, the devices do not boot to PXE.
I've confirmed the following:
- Enable PXE Support for clients - checked
- Allow this distribution point to respond to incoming PXE requests - checked
- Enable unknown computer support - checked
- We currently use WDS for PXE.
I thought perhaps the boot image simply needed to be updated on the DPs, so I selected our boot image and updated distribution points. However, I received the following error:
Error: Failed to import the following drivers: • Intel(R) Ethernet Connection I217-LM - Failed to inject a ConfigMgr driver into the mounted WIM file
Error: The wizard detected the following problems when updating the boot image. • Failed to inject a ConfigMgr driver into the mounted WIM file The SMS Provider reported an error.: ConfigMgr Error Object: instance of SMS_ExtendedStatus { • Description = "Failed to register to status manager"; • ErrorCode = 2152205056; • File = "F:\\dbs\\sh\\cmgm\\0926_074307\\cmd\\18\\src\\SiteServer\\SDK_Provider\\SMSProv\\sspbootimagepackage.cpp"; • Line = 5539; • ObjectInfo = "CSspBootImagePackageInst::PreRefreshtPkgSourceHook"; • Operation = "ExecMethod"; • ParameterInfo = "SMS_BootImagePackage.PackageID=\"NAZ00005\""; • ProviderName = "WinMgmt"; • StatusCode = 2147749889; };
Since I assume I now had a corrupt or otherwise unusable boot image file and neglected to snapshot before doing so, I restored my environment from backup the previous day. However, I saw no change in the issue.
I thought this may have started after the January Windows updates were deployed in late February. We tried removing the update KB4489899 but after attempting removal, it would auto-install again on before the next reboot, so we couldn't remove it.
After confirming that our last successful UCD was done within the last few weeks, I decided to restore the environment back to February 13th, which was before the Windows update was done, and before our last known successful UCD. Regardless, I'm still unable to perform a UCD.
I even tried rebuilding the boot image from scratch, thinking that was corrupt. I utilized the WIM file in the C:\Program Files (x86)\Windows Kits\10\Assessment and Deployment Kit\Windows Preinstallation Environment\amd64\en-us directory as my source and uploaded the latest driver pack from Dell for our end points, distributed it and updated my TS to point to the new boot image and it still doesn't seem to allow PXE boot to work.
I tried researching through copilot which didn't turn out to be too fruitful. It references the SMSPXE log on the DP, but that log doesn't exist there, nor does it exist on the site server. Any other logs to consider searching through to pinpoint a cause? I'm currently at a loss on what else to check.