How to reboot windows defender disable

Hello, thank you for reaching out to Microsoft Q&A.

This is a technical scam that blocks your input functions and prompts you to call a phone number to unlock the device.

You can close this pop-up by pressing CTRL + ALT + DELETE on your keyboard, opening Task Manager, and then ending all browser processes that are currently running.

If you clicked any links or entered any information, make sure you change your Microsoft account password immediately.

The phone number on the screen is part of a tech support scam, not real Microsoft support. The “frozen” or locked screen is just a malicious web page, not Windows Defender.

To close it and get Lenovo working again:

1. Press Ctrl + Alt + Del on the keyboard.
2. Select Task Manager.
3. In Task Manager, select the web browser that is showing the warning (for example, Microsoft Edge, Chrome, Firefox).
4. Select End task for each browser process to close all browser windows.
5. After that, reopen the browser and avoid restoring the previous session or tabs if prompted.

If no software was installed and no remote access was granted to the computer, the device is not hacked and no further action is usually required beyond closing the scam page.

If any software was installed or remote access was allowed, contact official Microsoft Support using the methods described in the references below and have the device checked.

To help prevent future issues:

• Use only official Microsoft support channels. Microsoft will not ask to call random numbers that appear in pop‑ups.
• Keep antivirus protection on (for example, Microsoft Defender Antivirus) and avoid clicking suspicious links.

More information about this type of scam and how to handle it is available here: Protect yourself from tech support scams.

References:

• Microsoft Defender Scam or Do I have a virus on my computer - Microsoft Q&A
• Who do I call for support? - Microsoft Q&A