Zde naleznete návod jak změnit product key pro produkty MS OFFICE 365 a 2013

1.

Open a Command Prompt window, and then take one of the following actions:

• If you installed the 64-bit version of Office 2013, move to the following folder: C:\Program Files\Microsoft Office\Office15

• If you installed the 32-bit version of Office 2013, move to the following folder: C:\Program Files (x86)\Microsoft Office\Office15

2.

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

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:<last five characters of product key>