Remove and Re-add License Key for Office 2016
Step 1: Open Command Prompt on PC
Open a Command Prompt window, and then take one of the following actions:
• If you installed the 64-bit version of Office 2016, move to the following folder: C:\Program Files\Microsoft Office\Office16
• If you installed the 32-bit version of Office 2016, move to the following folder: C:\Program Files (x86)\Microsoft Office\Office16
Step 2: Display the Current License(s)
Type the following command to display the license status. Note the last five characters of any and all license keys that display in the output:
cscript ospp.vbs /dstatus
Step 3: Remove the License(s)
Now run the following command as many times as needed to remove all of the license keys you noted from the previous step.
cscript ospp.vbs /unpkey: