While players often call it "SKSE 1.6.342" based on the game's version, the actual SKSE file version is 2.1.2 . Why This Specific Version is Important
Right-click SkyrimSE.exe in your game folder, select Properties > Details , and ensure the "Product version" says 1.6.342 . skse 16342
When Bethesda released the Anniversary Edition, they updated the game's executable (SkyrimSE.exe) to version . This change "broke" previous versions of SKSE, requiring the SKSE team to release a matching update. While players often call it "SKSE 1
If you have disabled automatic updates on Steam and your game version is currently 1.6.342, you use SKSE version 2.1.2. Using a newer or older version of SKSE will cause the game to crash on startup or display the "Version Mismatch" error. How to Install SKSE for 1.6.342 This change "broke" previous versions of SKSE, requiring