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Optimize Slow PowerShell Script Execution: Practical Fixes - How to Resolve Outlook Error 0x80040600-Clear Windows Terminal Cache via Command Line

2026-06-17 19:45:12
Optimize Slow PowerShell Script Execution: Practical Fixes - How to Resolve Outlook Error 0x80040600-Clear Windows Terminal Cache via Command Line

Result check

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