Greetings, the problem is solved. I just uninstalled both Roblox and Roblox Studio and re-installed it. Now, it works again. Thanks for your help though. I really appreciate it.

@leocg Not sure about it...

@leocg There's nothing called "Open With" whenever I right click it. The program is associated with Roblox and Roblox Studio itself.

@leocg Whenever I right click the file and choose open, there's no option. But the file downloads again whenever I choose open.

@leocg Roblox Studio files cannot be opened directly at Roblox. You need to click the .rbxl file in order for it to be opened.

@leocg About that, it just downloads again whenever I try to open it.

@leocg As you can see at the photo, yes. It's a .rbxl file. Last week, it works completely normal, but earlier, it doesn't.

Greetings! I have a problem at my Opera browser since last week. This problem also happens at Opera GX last month. So here's the problem, whenever I download a Roblox Studio file (.rbxl) at Opera, it downloads normally but it shows the Opera logo, and whenever I click it, the file downloads again. Is there any way that I have touched any settings at my browser, or is it the browser itself having problems? Please respond ASAP when you know how to fix this problem.

Thank You.