@theopenem_admin Where is it located?

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

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.