If you get the Failed to create directory message with error=3 when starting Roblox on your Windows PC, use these proven fixes.

If KRNL-Injector failed to find the Roblox process, delete KRNL App data and see. If that doesn't help follow the solutions mentioned in this post to resolve the issue.

This post highlights a few potential solutions to a problem about Roblox that keeps buffering in Windows 10. Read on to learn what triggers ping strikes that makes the Roblox game buffer and slow.