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How to Fix Cloudflare 521 Error with Firewall Settings - Missing Taskbar Icons in Windows 11? Try These Fixes-Fix IntelliSense Not Working in VS Code

2026-07-28 09:46:20
How to Fix Cloudflare 521 Error with Firewall Settings - Missing Taskbar Icons in Windows 11? Try These Fixes-Fix IntelliSense Not Working in VS Code

Result check

  • Keep one change per test run so you know which step helped.
  • Undo temporary changes after the issue is confirmed.

Next references

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