The WinOps Blog

The c:\windows\system32\sysprep\panther\setuperr.log shows:
Error      [0x0f0073] SYSPRP RunExternalDlls:Not running DLLs; either the machine is in an invalid state or we couldn't update the recorded state, dwRet = 31
Error      [0x0f00ae] SYSPRP WinMain:Hit failure while processing sysprep cleanup external providers; hr = 0x8007001f

resolution:

This error shows that sysprep was run multiple times on the machine, please open a command prompt, type: slmgr /dlv to view how many times of remaining Windows Activation count. Generally speaking, to sysprep the image on a single computer for multiple times, you need to configure the Microsoft-Windows-Security-SPP | SkipRearm to 1 in the unattend.xml file. I am assuming whether you configure the Microsoft-Windows-Security-Licensing-SLC | SkipRearm to 1 instead of SPP, the SLC setting is deprecated and should not be used. 
 
As a work around of this problem, please type: regedit in the Start Search box to open Registry Editor, set the value of GeneralizationState under HKEY_LOCAL_MACHINE\SYSTEM\Setup\Status\SysprepStatus to 7, then run sysprep again.
 
If the same issue still persists, please unistall the MSDTC and Reinstall it, then try the sysprep.
 
To uninstall MSDTC :- msdtc -uninstall
 
To reinstall  MSDTC :- msdtc –install