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Fix Windows Activation: Cannot Connect to KMS Server - Windows Activation Blocked by Firewall – How to Allow-Fix Windows Activation Port 1688 Already Allocated Error

2026-06-14 05:27:14
Fix Windows Activation: Cannot Connect to KMS Server - Windows Activation Blocked by Firewall – How to Allow-Fix Windows Activation Port 1688 Already Allocated Error

Result check

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

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