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Roblox ended support for systems running Windows 7 in January 2025, and now only supports Windows 10 and 11. This means that recent versions of Roblox will no longer run on Windows 7. This is likely the reason for the error you are encountering, which is a generic error code that indicates the program failed to start correctly.
As Roblox have dropped support for Windows 7, the error likely results from changes they have since made to the game that make it incompatible with that version of Windows.
While there may be workarounds to allow the game to run on Windows 7, they are unofficial and prone to instability.
I would suggest that you upgrade to a modern version of Windows that Roblox supports, such as Windows 10 or 11. Windows 7 is no longer supported by the vast majority of modern games and applications, and no longer receives regular security updates, making it prone to exploits and other security issues.