Microsoft 365 learnings

I am working on couple of exciting SCCM Projects and still learning something new every day. I have been figuring out why SCCM task sequences are not deploying to workstations. Client was showing following error prior to showing option to select task sequence. Usually, you receive error 80004005 if time is not set correctly on computer or there is mismatch between SCCM DP/Primary site time and client time. In may case issue caused due to SHA1 Certificate chain. Somehow client have not upgraded their certificate authority to Sha2 due to some limitation with one of the applications. SCCM has been configured with SHA1 Certificates.  However, i forgot to untick the box 'Require SHA-256'.As a result , Boot image was failing to communicate with SCCM Management. To fix the issue untick 'Require SHA-256 from \Administration\Overview\Site Configuration\Sites. As shown below. Happy SCCM....

Dell Latitude 7480 Unable to Detect NVMe Drive while PXE booting using UEFI secureboot. To fix the issue download ' Intel Rapid Storage Technology Driver and Management Console' drivers from Dell Website.   Extract all drivers files, go to Drivers\Prodcution\Windows10-x64.  Inject iastoreAC.INF file drivers using DRVLoad command during PXEboot or in the bootimage. i.e Drvload \path\iastoreac.inf

Recently, I am come across the issue where Dell OptiPlex 3010 was unable to load boot image using PXE boot successfully. System was unable to load boot.sdi file. Loading Files, File \SMSBoot\boot.sdi, WDS log shows the message "TFTP download failed". Resolution: This issue might occur if following registry entry added to  SCCM Distribution Point with PXE. HKEY_LOCAL_MACHINE\ Software\Microsoft\SMS\DP\RamDiskTFTPBlockSize Type Reg_Dword Value: 16384 Dec          (Do not use higher value than this!)  Recommend that you increase this setting in multiples (4096, 8192, 16384, and so on) and that you not set a value higher than 16384. Please change the value of RamDiskTFTPBlockSize to 8192 or lower to resolve this issue.

Unable to PXE Boot Surface Pro 2 ?  Surface Pro 2 driver pack is available from download from Microsoft Website. This driver pack does not include the Ethernet Adaptor drivers to inject in WinPE boot image for PXE Boot. Initially I had trouble finding the driver to inject in Boot CD, driver is not included in Surface Pro 2 driver pack or any other official Microsoft link . I managed to identify driver from driverstore and inject in SCCM. The same driver package was  injected in Win PE boot image from SCCM 2012 R2 or SCCM 2012 SP1 CU3 using DISM command on Windows 8.1 machine . Driver can be downloaded from here . Thanks Pratik Dave 

Network Driver for HP Elitebook 840 G1 Issue :  HP elitebook 840 G1 does no PXE boot when network drivers are injected in boot image. environment SCCM 2012 SP1. Answer: To build HP elitebook 840 G1  inject the Windows 8 network driver.  Please see post below from Niall C. Brady on how to inject or test drive during task sequence. Thanks Niall C. Brady for this article:  http://myitforum.com/cs2/blogs/nbrady/archive/2011/08/31/missing-nic-driver-in-winpe-boot-image-no-problem.aspx . TO\o Download Driver click here   Unzip the file using 7 zip, go to \sp63299\Setup\Win8x64  folders and inject driver in boot image  from SCCM or using drvload command as explain in article.  Happy Days....