Running the game in windowed mode (via the launcher or BethINI) can prevent many startup crashes and Alt-Tab freezes.

For the best experience on Windows 10 or 11, apply these settings to your oblivion_launcher.exe :

In 2021, the remained a common point of failure for players on modern systems like Windows 10 and 11 . While the game is aging, most launcher issues are solvable through registry edits, compatibility settings, or bypassing the launcher entirely. Common Issues & Fixes (2021)