KB2670838 and Revit
Looks like KB2670838 might be a bit of a pain. It seems to be messing with some systems, including causing a strange colour change in Revit 2012 as per Color Change in Revit 2012 after Updating Window…
direct3d
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DirectX Runtimes – download
As you know, support for DirectX is now an intrinsic part of Revit 3D hardware acceleration mode. If you wish to install updated DirectX runtimes, go to this link (February 2010 version). This may or …