Roblox server outage. In most cases, Error 400 occurs due to a server-side issue. Under such circumstances, you must wait for the server-side problem to be resolved. Go to the Roblox Server Status or DownDetector website and check for issue reports. Corrupted web browser cache and cookies....
The guide that could fix Bad Request error code 400 in Roblox is below. Please follow the steps carefully: Method 1. Reset your Internet Connection Go toWindows Settings Click onControl Panel Go toInternet Options Choose theAdvanced Settings ...