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Fix VS Code Terminal Not Opening WSL - Cloudflare 521 Error: DNS and Server Checks-Resolve Windows 11 Upgrade Stuck at 99%

2026-07-28 16:02:01
Fix VS Code Terminal Not Opening WSL - Cloudflare 521 Error: DNS and Server Checks-Resolve Windows 11 Upgrade Stuck at 99%

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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