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Fix Windows Update Proxy Errors After Network Change - How to Resolve Error Code 0x80073cf3 in Microsoft Store-Teams Connection Timeout: Firewall Troubleshooting Steps

2026-06-14 07:29:31
Fix Windows Update Proxy Errors After Network Change - How to Resolve Error Code 0x80073cf3 in Microsoft Store-Teams Connection Timeout: Firewall Troubleshooting Steps

Result check

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