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Windows Defender Scan Stuck at Certain Percentage: Fixes That Work - How to Resolve Security Service Unavailable Error in Windows 11-Fix Windows Defender Real-Time Protection Stuck on Scanning

2026-06-13 16:32:10
Windows Defender Scan Stuck at Certain Percentage: Fixes That Work - How to Resolve Security Service Unavailable Error in Windows 11-Fix Windows Defender Real-Time Protection Stuck on Scanning

Result check

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