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Fix Windows Defender Can't Connect After Update - Fixing Dependency Conflict and Windows Defender Error 0x8007042c-Fix SSL_ERROR_BAD_CERT_DOMAIN Caused by Antivirus in Firefox

2026-06-13 14:20:18
Fix Windows Defender Can't Connect After Update - Fixing Dependency Conflict and Windows Defender Error 0x8007042c-Fix SSL_ERROR_BAD_CERT_DOMAIN Caused by Antivirus in Firefox

Result check

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