Microsoft Confirms New Bug in Windows 10 Cumulative Updates KB4503293, KB4503327

Microsoft has simply confirmed a brand new difficulty launched by the June 11 cumulative updates for a sequence of Windows 10 variations.

The software program big says that putting in these cumulative updates might trigger units utilizing PXE from a WDS or SCCM server to fail to begin.

However, please be aware that this difficulty doesn’t have an effect on shopper editions of Windows 10, however solely server SKUs, as you will discover in the desk under. Microsoft explains the next:

“Devices that start up using Preboot Execution Environment (PXE) images from Windows Deployment Services (WDS) or System Center Configuration Manager (SCCM) may fail to start with the error “Status: 0xc0000001, Info: A required device isn’t connected or can’t be accessed” after installing [June 11 cumulative updates] on a WDS server.”

Workaround already obtainable

The affected Windows 10 variations are those listed under:

Windows Server 2008 SP2
Windows Server 2008 R2 SP1
Windows Server 2012
Windows Server 2012 R2
Windows Server 2016
Windows Server, model 1803
Windows Server 2019
Windows Server, model 1809
Windows Server, model 1903

Microsoft says a workaround already exists, and customers can mitigate the difficulty on a SCCM server by checking if the Variable Window Extension is allow and setting the values of TFTP block dimension to 4096 and TFTP window dimension to 1.

“Try the default values for TFTP block size and TFTP window size first but depending on your environment and overall settings, you may need to adjust them for your setup. You can also try the Enable a PXE responder without Windows Deployment Service setting,” Microsoft provides.

The firm additionally explains that it’s already engaged on a repair for this downside, and that is projected to be included “in an upcoming release.” No additional specifics have been supplied on when the repair is meant to land.

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