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Fix Nginx Upstream Connection Refused Error - Windows 11 Update Frozen at 0% – Fix Guide-Resolve Cloudflare 522 Connection Timeout

2026-07-28 08:05:51
Fix Nginx Upstream Connection Refused Error - Windows 11 Update Frozen at 0% – Fix Guide-Resolve Cloudflare 522 Connection Timeout

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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