I filed a bug (which I cannot find how to access now) recently that Acrobat DC was crashing anytime OCR was invoked (scan or "Edit" selected on a scanned image). I have found the solution in my case:
Recently purchased an HP all-in-one and installed its software. Part of that installation installed their I.R.I.S OCR software. Unfortunately, when Acrobat DC instantiated OCR on a PDF that had been scanned (image only, no text) either during the scan or selecting Edit Page in the tools, Acrobat would try to use the I.R.I.S OCR DLL installed by HP and crash.
Solution:
I went into the Control Panel, Programs and Features, and uninstalled just the I.R.I.S. OCR software. OCR now works without issue in Acrobat and Acrobat can scan to PDF just fine from the all-in-one.