Posted January 30, 201311 yr FPCH Admin What is KB2778171 function? When I installed this KB, Play video with WMP, after maximize and minimize or switch display mode or plug/unplug external monitor cable. the video all will play unsmooth, I have to uninstall KB2778171. all this problems are not duplicated. So I want to know why does KB2778171 impact video playing? Thank you. View this thread Off Topic Forum - Unlike the Rest
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