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Fix OneDrive Sync Error 0x8004de40 on Windows - Windows 11 Task Scheduler Lag Fix-Fix Windows Defender Causing Slow Boot Up

2026-06-13 22:22:35
Fix OneDrive Sync Error 0x8004de40 on Windows - Windows 11 Task Scheduler Lag Fix-Fix Windows Defender Causing Slow Boot Up

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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