Antivirus settings in sharepoint environment can be enabled in Central Administration as well as through Powershell. In this blog, I will provide the powershell commands to enable the antivirus settings.
# Get a reference to the Administration
$adminService = [Microsoft.SharePoint.Administration.SPWebService]::ContentService
# Set antivirus settings
$adminService.AntivirusSettings.AllowDownload = $false
# Enable Download Scan
$adminService.AntivirusSettings.DownloadScanEnabled = $true
# Enable upload scan
$adminService.AntivirusSettings.UploadScanEnabled = $true
# Enable Cleaning
$adminService.AntivirusSettings.CleaningEnabled = $true
Happy SharePointing :-)