@drazkers
I Have the same problem. I checked everything but nothing works and than I found your suggestion. Could you please tell us, where we can find the installed DXV Codec on a windows machine to copy and paste it in the quicktime folder? 
Just for safety I also tried to paste directly the DXV ...
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- Wed Oct 18, 2017 09:26
 - Forum: Problems? Bugs? Solutions!
 - Topic: After Effects 17 doesn't show DXV 3 Codec
 - Replies: 17
 - Views: 48545