The client boots up and receives a boot image from the distribution point.Unknown host (gethostbyname failed) sending with winhttp failed 80072ee7. You will see the following error when the SCCM client failed to run the task sequence due to error 0x80072ee7 in X:\Windows\Temp\SMSTSLOG\smsts.log: Sometimes you run into issues that you see now and then. How to solve the winhttp failed 80072ee7 error.Failed to run task sequence error 80072ee7 in SCCM.