SCCM - TS environment is not initialized

I was in a process of upgrading a customer to the latest SCCM 1710 build for rolling out Windows 10 across the companies network.

To upgrade to SCCM 1710 you must first upgrade to SCCM 1702 then do the next upgrade in the SCCM console.

While upgrading a client to SCCM build 1702, we ran into an issue where the following error was generated in the smsts.log file on the SCCM Distirbution Point.  This error was experienced when imaging a client with our existing Windows 7 deployment task sequence via PXE Boot.

"TS environment is not initialized"

On the client being imaged, the following error was experienced:

The Windows Boot Configuration Data (BCD) file from the PXE server does not contain a valid operating system.  Ensure the server has boot images installed for this architecture.

Error Code: 0xc0000098

This issue occured because I installed The Windows Assessment and Deployment Kit (Windows ADK) version 1709 on the server.

SCCM 1702 does not support ADK 1709.

To fix the issue, I simply performed the next step of the upgrade - using the SCCM console to perform an in-place upgrade of SCCM to 1710.

For future reference:

If your running SCCM 1702, make sure you run ADK 1703.

If your running SCCM 1710, use ADK 1709.
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Hope this post was helpful.