# Microsoft Flight Simulator (2020) 40th Anniversary Edition Sim Update 16 Beta [1.39.0.0] Available Now!

- Product: Microsoft Flight Simulator (2020) 40th Anniversary Edition (https://whatsnew.fyi/product/microsoft-flight-simulator-2020-40th-anniversary-edition)
- Vendor: Asobo Studio
- Date: 2025-05-19
- Original notes: https://store.steampowered.com/news/app/1250410/view/528720974102660469
- Permalink: https://whatsnew.fyi/product/microsoft-flight-simulator-2020-40th-anniversary-edition/releases/2025-05-19-sim-update-16-beta-1.39.0.0-available-now

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **fixed** — Fixed bugs on timezone system and improved accuracy of data including country coasts, borders, and islands
- **changed** — Changed the way water bodies polygons work so that overlapping polygons of the same type no longer cancel each other
- **changed** — Improved memory management on Xbox Series S and Xbox Series X to improve stability

Welcome to the Microsoft Flight Simulator 2020 Sim Update 16 public beta test!

##### How to Join

-  Open your Steam Library

-  Right-click Microsoft Flight Simulator 2020

-  Click “Properties”

-  Click “Betas”

-  Select “flight_sim_beta – Sim Update 16"

If you would like to exit the pre-release test before it ends and revert back to the live build, follow these instructions:

-  Open your Steam Library

-  Right-click Microsoft Flight Simulator

-  Click “Properties”

-  Click “Betas”

-  Select “None”

##### RELEASE NOTES

**If you are playing on PC, outdated packages in your community folder may have an unexpected impact on the title’s performance and behavior.
If you suffer from stability issues or long loading times, move your community package(s) to another folder before relaunching the title.**
**[How to install a new update safely](https://flightsimulator.zendesk.com/hc/en-us/articles/360017133940)**

##### [](https://forums.flightsimulator.com/t/release-notes-sim-update-15-1-37-18-0-available-now/642215#new-contentfeatures-2)

##### **Stability & Performance**

- Improved memory management on Xbox Series S and Xbox Series X to improve stability

##### **General Bug Fixes**

- Fixed bugs on Timezone system. In addition, data is now more accurate (country coasts and borders, islands, etc)

##### **World**

- Changed the way water bodies polygons work so that overlapping polygons of the same type no longer cancel each other

[Read full release notes](https://forums.flightsimulator.com/t/sim-update-16-beta-1-39-0-0-release-notes-may-19th-2025/721971 style=button)