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arcmap 10.4 won't open ecw

Question asked by Ozplanman on Feb 15, 2017
Latest reply on Feb 16, 2017 by Ozplanman

My installation of Arc 10.4 has suddenly stopped opening ecw files.  It did this after I simply closed the programs (ArcMAP and Arc Catalog) and later reopened them.  We need to use ECWs so a fix would be hugely appreciated!

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