Windows & BSOD · high

How to fix0x80070422

Windows Defender service disabled

What this error means

Windows Defender service disabled (0x80070422) is a high-severity fault affecting the Windows operating system. The Windows Defender service cannot start, leaving the system vulnerable. It's also often linked to third-party antivirus interference. Work through the steps below in order.

Before you begin

Save open work and back up important files. Use instructions for your exact device and software version. If Windows cannot start, see the startup guide.

Work through these checks

0 of 2 complete
01Uninstall conflicting AV
  1. Uninstall conflicting AV
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

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02Run malware scan in Safe Mode
  1. Run malware scan in Safe Mode
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

Browse related errors

Possible causes

  • Third-party antivirus interference
  • Malware disabled the service