PROBLEM: ======================= ====================== NOTE: As abbodi1406 and murphy78 didn't face this with english install media, this might be related to non-english versions . SOLUTION (so far): Seems the Store Update KB2956575 was causing the corruption. Excluding it from integration solved the problem. Special thanks to abbodi1406 for hinting in the right direction . After integrating these: Code: Windows8.1-KB2920189-x64 Windows8.1-KB2931358-x64 Windows8.1-KB2931366-x64 Windows8.1-KB2939153-x64 Windows8.1-KB2950153-x64 Windows8.1-KB2953522-x64 Windows8.1-KB2954879-v2-x64 Windows8.1-KB2955164-x64 Windows8.1-KB2957151-x64 Windows8.1-KB2958262-x64 Windows8.1-KB2962140-x64 Windows8.1-KB2965065-x64 windows8.1-kb2965500-x64 WU offers only the excluded one and Defender/MSRT related stuff .