Hello Amanda,
Thank you for posting question on Microsoft Windows Forum!
The fact of the matter is that the export file on the Microsoft Product Lifecycle page has indeed been reduced to ~300 lines, whereas it previously contained ~3000 entries. This is not a bug but a change in how Microsoft currently provides lifecycle data. The Microsoft Product Lifecycle export tool has undergone changes in how it aggregates data, which may explain the reduction in lines within the exported CSV. At present, there is no official statement about restoring the larger dataset.
If you rely on the full dataset for compliance, inventory, or IT planning, the suggestion here is to use the Product Search tool. You can filter by product family, release date, or support status. While less convenient than a bulk export, it still provides detailed lifecycle information.
Alternatively, you can consider the Microsoft Graph API (Windows Updates). The microsoft.graph.windowsUpdates namespace provides detailed lifecycle and servicing information for Windows products. Also, the Internet Archive (Wayback Machine) may have snapshots of the older export file with ~3000 lines. It can be considered useful if you need historical lifecycle data.
You can consult the following articles for further reference regarding your query.
- https://learn.microsoft.com/en-us/lifecycle/products/
- https://learn.microsoft.com/en-us/graph/api/resources/windowsupdates-servicingperiod?view=graph-rest-beta
Hope the above information is helpful! If it is. Free feel to hit "Accepted" for benefitting others in community having the same issue too.