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Need to access EndNote library via both a Mac and PC?
October 2019: EndNote X9.3.1 Mac libraries are currently not cross-platform compatible with EndNote for Windows. The X9.3.1 patch for EndNote (Windows) will be available later this year to restore cross-platform compatibility. Users are encouraged to use Sync to move their library between X9.2 Win and X9.3.1 Mac until the update is ready.