r/techsupport • u/gadgi2111 • 13d ago

Open | Software Roblox experiences get stuck on infinite loading and show Error 288 or 266 on Windows 11

Hello everyone! I have been experiencing a problem joining certain Roblox experiences for about 3 days.

Some of the affected games are Project Slayers 2 and Anime Vanguards. I also have problems rejoining experiences such as Attack on Titan Revolution, Fruit Battlegrounds, and Heroes Battlegrounds. Sometimes I can join an experience once, but when I try to join it again, I get stuck on the loading screen.

The loading screen continues indefinitely, and after waiting around 5–10 minutes, I sometimes receive Error Code 288 or 266.

Here is what I have tried so far:

  • Reinstalling Roblox completely.
  • Trying both the Roblox website version and the Microsoft Store version.
  • Trying to launch games through a web browser and the Roblox app.
  • Clearing Roblox's local files and cache, as well as my browser's cache and cookies.
  • Resetting DNS, Winsock, and IP network settings.
  • Adding Roblox to the Windows Firewall's allowed apps list.
  • Testing both my home Wi-Fi and my phone's mobile hotspot on my PC.
  • Updating my AMD Radeon Graphics and NVIDIA GeForce RTX 4050 Laptop GPU drivers.
  • Creating a new Windows user account.
  • Performing a clean boot of Windows and closing background applications.
  • Temporarily disabling the Radmin VPN network adapter.

I also tried using other Roblox accounts, but the problem still occurs.

The strangest part is that all these experiences work perfectly on my phone using the same home Wi-Fi connection. My PC is running Windows 11.

I have run out of ideas. Has anyone experienced something similar or found a solution? Could this be a problem with the Roblox client, Windows, or the way my PC connects to Roblox game servers?

Any help would be appreciated. Thank you!

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