: If you already have Office 2013 installed, using the Microsoft Update service is the recommended way to receive SP1 and subsequent security fixes automatically. Alternative Safe Archival Links
: Available on Microsoft Support as KB2817430. : If you already have Office 2013 installed,
Instead, it is safer to use official or well-documented archival sources to obtain Microsoft Office 2013 Service Pack 1 (SP1) and its updates. Official Microsoft Resources While they no longer provide active updates, you
Searching for specific file names like on third-party sites like FaresCD can be risky, as downloading from unofficial sources exposes you to viruses, malware, and counterfeit software . including English (en)
: You can find various language versions, including English (en), on the Internet Archive . Important Considerations Description of Microsoft Office 2013 Service Pack 1 (SP1)
If you are looking for the full installation media (ISO) rather than just the service pack update, the hosts verified community uploads of original retail and volume license discs:
Microsoft reached the end of support for Office 2013 on . While they no longer provide active updates, you can still find official service pack installers on the Microsoft Download Center .