I have had this issue for years with MS Word 2011. I upgraded to MS Word 2016 and am still having the same problem. I can only copy if I press command, then double press C while holding down command. Just pressing command-C does not add anything to my clipboard.
How can I fix this? This problem has continued to haunt me for years, even after I did a factory reset on my Macbook, have upgraded Mac OS X several times and also upgraded MS Office. Thanks for the help.
If I hold down command-C for a second, I only have to press it once. Regardless of how long I hold it down, I see the Edit menu in the filebar flash blue... even if it doesn't copy anything to the clipboard after the first (or sometimes even the second) button press.