Summary

This guide helps you troubleshoot and resolve: Setting up business-grade antivirus. Follow the steps below to fix the issue.

Common Causes

Setting Up Business-Grade Antivirus - Business User Guide

Problem

You need to ensure your computer has business-grade antivirus protection installed and running properly.

Why Antivirus Matters

• Protects against malware, ransomware, and viruses
• Required by company security policies
• Prevents data breaches
• Keeps company data safe

Your Company Likely Uses One Of:

• Windows Defender (built into Windows 11)
• Microsoft Defender for Endpoint
• SentinelOne
• Symantec/Norton
• McAfee
• ESET

Solutions

Step 1: Check Current Antivirus

1. Press Win + I → "Privacy & security" → "Windows Security"

2. Click "Virus & threat protection"

3. Check the status under "Virus & threat protection updates"

4. If it says "You're protected," you're good!

Step 2: Ensure Real-Time Protection is On

1. In Windows Security → "Virus & threat protection"

2. Under "Virus & threat protection settings," click "Manage settings"

3. Ensure "Real-time protection" is ON

Step 3: Run a Manual Scan

1. In Windows Security, click "Quick scan"

2. Wait for the scan to complete (may take 10-30 minutes)

3. Review any threats found and take recommended action

Step 4: Check for Company-Managed Antivirus

If your company manages your security:

1. Look for the company antivirus icon in your system tray

2. Check for software like "SentinelOne," "Defender," or "ESET"

3. These may have additional company policies applied

Step 5: Update Antivirus Definitions

1. In Windows Security, click "Virus & threat protection"

2. Under "Virus & threat protection updates," click "Check for updates"

3. Install any available updates

4. Restart your computer if prompted

Step 6: Company Portal (Intune/SCCM)

Your company may manage antivirus through a portal:

1. Search for "Company Portal" or "Software Center" (Win + S)

2. Open it and sign in with company credentials

3. Check for any required security software

4. Install any pending updates

What To Do If a Threat Is Detected

Step 1: Don't Panic

• The antivirus will often quarantine threats automatically
• Follow the on-screen recommendations

Step 2: Take Recommended Action

• Click "Clean threats" or "Remove" if prompted
• Let the antivirus complete the removal
• Restart your computer if needed

Step 3: If Threat Can't Be Removed

1. Note the name of the threat

2. Contact IT Support immediately

3. Don't try to manually delete files unless directed

Antivirus Best Practices

• Never disable real-time protection (even temporarily)
• Never install unapproved security software
• Keep Windows updated (security updates are critical)
• Don't open suspicious email attachments
• Only download software from approved sources

Common Issues

"Antivirus is turned off"

• Turn it back on immediately
• Contact IT if it keeps turning off

"Definitions are out of date"

• Run Windows Update
• Check for updates in the antivirus software

"Can't install company antivirus"

• Ensure you have admin rights or contact IT
• Check the Company Portal

Need More Help?

Contact IT Support if:

• Antivirus keeps being disabled
• You can't update definitions
• A threat can't be removed
• You're unsure what antivirus to use

Still Having Issues?