This problem occurs a lot with me. I know of a few temporary fixes, but currently I have not found any permanent fixes. Here’s a few things you can try. First, just wait around 5 mins after the error code appears and try opening Royals again. This has been working for me recently. Another option is to enable “Compatibility Mode” in the Mapleroyals properties. Right click on the shortcut; Click properties; Go to the “Compatibility” tab if you are in windows 10; check the box for compatibility mode. It doesn’t matter which version of Windows you choose, only that you enabled it. After you’ve enabled it, click apply and then try opening Mapleroyals. Hope this helps!