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How to fix Roblox Error Code 268?
Resolve Roblox Error 268 "Unexpected Client Behavior". Learn how to purge conflicting Fast Flags, delete corrupted ClientAppSettings, and clear automated security kicks.
How to fix Roblox Error Code 268? This error triggers when Roblox detects unexpected client behavior or potential exploit software. Fix it by uninstalling any third-party shaders/mods, deleting your Roblox AppData folder, or simply waiting 30 to 60 minutes for the automated server-side kick to clear.
| Telemetry Metric | Verified Value |
|---|---|
| Trigger Mechanism | Hyperion Anti-Cheat Memory Inspection or Corrupted ClientAppSettings |
| Automated Kick Duration | 30 to 60 minutes temporary hardware-hashed lock |
| Common Culprit | Bloxstrap FFlags, ReShade shaders, or third-party FPS injectors |
| Immediate Fix Command | del /f /q "%localappdata%\Roblox\Versions\*\ClientSettings\ClientAppSettings.json" |
| Permanent Ban Risk | Low if caused by benign FFlags; High if running cheat injection DLLs |
Why Error 268 Triggers (Hyperion Anti-Tamper Protocol)
Roblox Error Code 268 displays the dialog: "You have been kicked due to unexpected client behavior." Unlike connection errors, this is an active server-side security disconnection.
Hyperion anti-tamper performs continuous cryptographic checksum validation on game memory. If local code execution deviates from authoritative server simulation—whether caused by corrupted client files, unauthorized Fast Flags (FFlags), or memory injection tools—the server immediately kicks the player to protect match integrity.
Fix 1: Deleting Stale ClientAppSettings & Fast Flags
Many players use custom `ClientAppSettings.json` files to uncap framerates, tweak graphics, or alter lighting. When Roblox updates its client engine, deprecated flags trigger unexpected client behavior kicks.
Delete all custom Fast Flag files instantly using this command:
del /f /q "%localappdata%\Roblox\Versions\*\ClientSettings\ClientAppSettings.json"Fix 2: Uninstalling Shaders, Bloxstrap & Third-Party Injectors
If you use custom client launchers (like Bloxstrap) or third-party graphics wrappers (like ReShade or outdated FPS unlockers):
1. Fully close Roblox and launch the Bloxstrap configuration menu.
2. Reset all Fast Flags back to Factory Default.
3. If using ReShade, delete `dxgi.dll` and `opengl32.dll` from your active Roblox Versions folder, as Hyperion aggressively flags hooked graphics libraries.
Fix 3: Respecting the 60-Minute Automated Hardware Kick
CRITICAL WARNING: When Error 268 triggers, Roblox places a temporary 30-to-60 minute shadowban on your client's hardware identifier (HWID).
If you repeatedly attempt to rejoin experiences immediately after getting kicked, the server treats your reconnections as an automated exploit script and resets the 60-minute countdown timer.
After purging your cache and FFlags, leave Roblox completely closed for a full 60 minutes before launching your next experience.
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Official Diagnostic Tools & Download Links
Verified first-party resources related to this topic: