Skyrim Update 1.6.640 |link| -

Released on , for PC (via Steam), Skyrim Special Edition (SSE) version 1.6.640 was a small but important patch, clocking in at just 25.9MB . Its size indicates it was more about repairs than delivering new features, a sentiment echoed by community modders at the time. A GOG version, 1.6.640.0.8, followed on September 29, 2022.

Within 48 hours of release, every SKSE plugin broke. Here is the technical reason: skyrim update 1.6.640

After modding 1.6.640, run these checks: Released on , for PC (via Steam), Skyrim

At the main menu, look at the very bottom left corner of your screen. for PC (via Steam)

If you want to preserve it forever: back up your SkyrimSE.exe , the entire Data folder, and your Steam manifest file. Then never click "Update" again.