Some specific updates and patches can be found by searching the Microsoft Update Catalog . How to Check Your Current Version
This is the standard way to download specific versions of Office LTSC. You can configure a .xml file to pull the exact build (14332.20281) from Microsoft's servers. Detailed instructions are available on Microsoft Learn . Download 2108 14332 20281 part2 rar
You can download the necessary host keys and activation tools directly from the Microsoft Download Center . Some specific updates and patches can be found