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Step 1 of 5

Turn off antivirus before setup

Windows Defender or a third-party antivirus can block the loader, Npcap, or helper files during the first install. Disable it first and keep it off until the first launch succeeds.

Progress

20%

Step 1

Loader-based helper setupEasy

Manual Way

Disable Defender from Windows Security

1

Open Windows Security.

2

Go to Virus & threat protection.

3

Open Manage settings.

4

Turn off Real-time protection, Tamper protection, Cloud-delivered protection, and the remaining Defender toggles.

5

Make sure Defender stays off before you continue with the loader setup.

Easy Way

Use Defender Control

1

Download Defender Control and extract the archive.

2

Right-click Defender Control and choose Run as administrator.

3

Press the disable button so Windows Defender is turned off.

4

Confirm the app shows OFF before moving to the next step.

5

Keep Defender disabled until the first full helper launch is completed.

Extra Notes

If Windows turns Defender back on during setup, switch it off again before you install Npcap or launch the helper.
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