Microsoft on-premises server product that runs Office Online.
Hi @Robin Chen,
This has nothing to do with licensing. After all, OOS and Office Online are two different versions of Office (just like SharePoint Server vs SharePoint Online), and it is normal to have functional differences.
Of course, we encourage users to upgrade or update OOS to the latest mainly for safety and reliability. The functional differences will be narrowed as the version is updated, but it does not mean that you will have the same functions after updating to the latest version. After all, product differences (OOS vs Office for web) lead to functional differences.
Additionally, references for you,
- The latest build number of OOS is
16.0.10338.20039as declared in this article. - How to apply software updates to Office Online Server.
- The latest CU for OOS: KB5002470.
Hope my answer helps. Let me know if you still have any other questions.
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