@theopenem_admin Excellent. Thank you again for your response and assistance!

Script module runs as the system account, there wouldn't be a %username% variable because no user is logged in.

Nevermind. I didn't read the test instructions carefully enough. I missed the port number.

no problem, happy to help

Could be a driver issue, I would try adding that specific nic driver to your winpe image.

It's not required, just an easy way to run some extra commands after the computer boots the first time. It wouldn't change your issue since you aren't getting that far.

In the toec api web.config change the log level from INFO to DEBUG

I had similar issue in the past - if the "5K" on the screeshot is the size of your toec client installer, it means it was not built properly server-side. It should be over 5 Megs in size.
Check your Admin Settings -> Toec screen and see 'Client MSI Arguments'. Does it have value for all the arguments (SERVER_KEY, CA_THUMBPRINT, COM_SERVERS)? Mine was having empty SERVER_KEY due to having wrong dbencryption key in web.config.
Application log was saying "ERROR Toems_Service.EncryptionServices Could Not Decrypt Password. Ensure Your Encryption Key is Correct."
Once I've put the correct dbencryption key, the toec client installer started builing correctly.

@theopenem_admin Where is it located?