Ensure the version you downloaded matches your game version exactly. If you are on the latest Steam version, you usually need the "Current Anniversary Edition build." Step 3: Run as Administrator
If you can get into the game but see a "SkyUI Error Code 1" mentioning version 0.0.0.0, the issue might be your mod manager. you are running skse version 0.0.0.0
SKSE works by hooking into SkyrimSE.exe at runtime. When a mod queries skse::g_skseInterface->GetSKSEVersion() , the response comes from SKSE’s internal state. If the hook fails or the mod queries too early/late, the version may default to 0.0.0.0 . Ensure the version you downloaded matches your game