Antivirus

1. Scan for spyware and other potentially unwanted software
2. With Windows Defender, you can run a quick scan of your computer or a full scan. If you suspect spyware has infected a specific area of your computer, you can customize a scan by selecting only the drives and folders that you want to check. 
3. A quick scan checks the places on your computer's hard disk that spyware is most likely to infect. A full scan checks all files on your hard disk and all currently running programs, but it might cause your computer to run slowly until the scan is complete. We recommend that you schedule a daily quick scan. If at any time you think that spyware has infected your computer, run a full scan. For information about scheduling, scans to occur regularly, see Schedule when Windows Defender scans your computer.
4. You should schedule a daily quick scan because it will check the areas of your computer that spyware or other potentially unwanted software is most likely to infect. If you want Windows Defender to check all files and programs on your computer, run or schedule a full scan.
   To enhance the security of your computer, you can have spyware and other potentially unwanted software automatically removed if they're detected during a scan.
1. Open Windows Defender by clicking the Start button . In the search box, type Defender, and then, in the list of results, click Windows Defender.
2. Click Tools, and then click Options.
3. Under Automatic scanning, select the Automatically to scan my computer (recommended) check box, select the frequency, time of day, and type of scan that you want to run, and then click Save.  If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
4. To automatically remove spyware or other potentially unwanted software after a scan, in the left pane, click Default actions, select the action that you want to apply to each alert item, select the Apply recommended actions check box, and then click Save.  If you're prompted for an administrator password or confirmation, type the password or provide confirmation.

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