Press in WinPE to open a command prompt and review the X:\windows\temp\smstslog\smsts.log . Look for WinHttpSendRequest failed or DownloadFiles() failed followed by 80072ee2 . Summary of Solutions All machines fail Verify Boundary Groups and DP health. Specific model fails Update Boot Image with specific NIC drivers. Slow/unstable network Set SMSTSDownloadRetryCount to 5+. Random packages fail Redistribute content to DP. To help narrow down the cause, could you tell me: Does this happen on all devices or just new models ?

Verify in the SCCM console that the OS Image and Driver Package are successfully distributed to the DP.

The client cannot find a DP associated with its network location.

I can then tell you which drivers or variables to check specifically.

Before changing configurations, ensure the content is actually there.

If the error occurs immediately upon booting or during the initial steps, WinPE might not have the correct network driver.

This error, which translates to (ERROR_WINHTTP_TIMEOUT), occurs when the client machine in WinPE fails to receive content from the Distribution Point (DP) within a specific timeframe. It often happens during the "Apply Operating System," "Apply Driver Package," or while fetching policy from the Management Point (MP).