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Fix Windows Defender Connection Timeout Error 0x80070422 - How to Fix Windows Activation Sync in Dual-Boot with Ubuntu-Fix Windows Defender Cache Not Clearing

2026-06-13 23:06:27
Fix Windows Defender Connection Timeout Error 0x80070422 - How to Fix Windows Activation Sync in Dual-Boot with Ubuntu-Fix Windows Defender Cache Not Clearing

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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