Error: "There was an error sending the command to the program in word 2013" Solution: Open Registry editor. Change the value of H Key classes root \ Word.document.12\ shell \ open \command \ on the right panel - right click and modify the value to "C:\Program Files\Microsoft Office 15\Root\Office15\WINWORD.EXE" /n "%1" Change the value of H Key classes root \ Word.document.12\ shell \ open\ ddexec \ application\ on the right panel - right click and modify the value to winword.