I used Microsoft Toolkit 2.5.0 Beta 5. - Error Log: ---Processing-------------------------- ---------------------------------------- Installed product key detected - attempting to activate the following product: Name: Office 15, OfficeProPlusMSDNR_Retail edition Description: Office 15, RETAIL channel Family: OfficeProPlusMSDNR_Retail SKU ID: 41499869-4103-4d3b-9da6-d07df41b6e39 Last 5 characters of installed product key: 628P9 ERROR CODE: 0xC004C003 ERROR TEXT: The activation server determined the specified product key has been blocked. <Product activation failed> ---------------------------------------- Installed product key detected - attempting to activate the following product: Name: Office 15, OfficeProPlusVL_KMS_Client edition Description: Office 15, VOLUME_KMSCLIENT channel Family: OfficeProPlusVL_KMS_Client SKU ID: b322da9c-a2e2-4058-9e4e-f59a6970bd69 Last 5 characters of installed product key: GVGXT - OS: Windows 8.1 Professional - x64 Bits Help!