Greetings, Greetings, Previously, I used Cracked Microsoft products, and I used the KMS tool to activate and it was later revealed that this tool causes system crashes, and now I have purchased a serial number for Microsoft products and deleted old Cracked copies, but now when activating the official version of office I am having trouble with the serial number where an error message appears That The product is not licensed and I tried with more than one serial number, but then the same problem showed me that this error message is due to the KMS files located inside the installation path of Office products. I have restarted my computer in an attempt to delete KMS files, but to no avail. When I install the official Microsoft Office version, the KMS files reappear inside the installation path and this causes problems with activation. Now I want to get rid of this KMS and have all its extensions rooted. What is the correct way to do that.