Fix ERR_QUIC_PROTOCOL_ERROR and ERR_CONNECTION_RESET in Edge & Chrome

If a website like https://example.com works for others but not for you, and shows connection errors, the issue is usually related to browser network protocols or antivirus software.

Common Errors You May See

If you see one of these errors while others can access the same website, it usually points to a local issue on your device or network.

Step 1: Disable Experimental QUIC Protocol

Modern browsers like Chrome and Edge use a newer protocol called QUIC (HTTP/3). Some networks and antivirus software do not handle it properly.

In Chrome:

1. Open chrome://flags/#enable-quic
2. Find Experimental QUIC protocol
3. Set it to Disabled
4. Restart the browser

In Edge:

1. Open edge://flags/#enable-quic
2. Disable Experimental QUIC protocol
3. Restart Edge

Step 2: If You Still See ERR_CONNECTION_RESET

If the error changes to ERR_CONNECTION_RESET, the connection is being interrupted. This is most commonly caused by antivirus software scanning secure traffic.

Step 3: Update Antivirus Settings (Important)

Many antivirus programs scan encrypted HTTPS traffic. This can interfere with certain websites.

Fix in AVG Antivirus

1. Open AVG
2. Go to Menu → Settings → Basic Protection → Web Shield
3. Find Enable HTTPS scanning
4. Turn it OFF
5. Restart your browser

Step 4: Similar Settings in Other Antivirus Software

If you are using a different antivirus, the issue is usually caused by a feature that scans encrypted HTTPS traffic. The exact name of the setting varies, but the steps are similar.

Avast Antivirus

1. Open Avast
2. Go to Menu → Settings → Protection → Core Shields
3. Scroll down to Web Shield
4. Click Customize
5. Find Enable HTTPS scanning
6. Turn it OFF
7. Restart your browser

Avast and AVG use very similar engines, so the issue and fix are nearly identical.

Kaspersky

1. Open Kaspersky
2. Click the Settings (gear icon)
3. Go to Security Settings → Network Settings
4. Scroll to Encrypted connections scanning
5. Select Do not scan encrypted connections
6. Apply changes and restart your browser

Kaspersky may also offer a “scan only when necessary” option. If available, you can try that first before disabling completely.

Bitdefender

1. Open Bitdefender
2. Go to Protection
3. Click Online Threat Prevention
4. Click Settings
5. Find Scan SSL or Encrypted web scan
6. Turn it OFF
7. Restart your browser

In some versions, this option may be labeled differently, but it always relates to scanning secure (HTTPS) traffic.

Norton

1. Open Norton
2. Go to Settings
3. Click Firewall or Web Protection
4. Look for HTTPS Scanning or Encrypted Traffic Inspection
5. Turn it OFF
6. Restart your browser

Norton may place this setting under multiple sections depending on the version. Look for anything related to secure traffic inspection.

What to Look For

If your antivirus is not listed above, search for settings with names similar to:

• HTTPS scanning
• SSL/TLS scanning
• Encrypted connections scanning
• Secure traffic inspection

Disabling this feature prevents the antivirus from interfering with secure connections, which resolves most cases of ERR_CONNECTION_RESET and ERR_QUIC_PROTOCOL_ERROR.

How to Confirm This Is the Issue

• The website works on another device
• The website works on mobile data or another network
• The issue appears only in Chrome or Edge
• Disabling antivirus web protection fixes it

Final Notes

These errors are often caused by conflicts between modern browser protocols and security software. Adjusting browser and antivirus settings usually resolves the issue quickly.

Frequently Asked Questions