The primary method for backing up an Office 2013 license involves the use of third-party utility software. When Office 2013 is installed, the product key is encrypted and stored deep within the Windows Registry. While it is technically possible for a user to navigate the registry hive to locate this key, the data is encoded in a binary format that is unreadable to the human eye. To bridge this gap, utilities such as ProduKey or Belarc Advisor are commonly employed. These lightweight applications scan the registry, decrypt the binary code, and display the valid 25-character product key. Once the key is revealed, the "backup" process transforms into a simple matter of documentation: the user must write the key down in a physical notebook or save it in a secure, encrypted digital file. This ensures that even if the operating system is rendered inaccessible, the proof of purchase remains intact.
This method copies activation files so you can restore without re-entering the key.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\OfficeSoftwareProtectionPlatform