Avast Blocking Internet: How to Fix Avast Antivirus Internet Connection Problems

When Avast blocks internet access, 👉 1-866-490-0338(USA/UK) ☎️ it can feel like your Wi-Fi is broken. But if websites stop loading, apps cannot connect, browsers show connection errors, or one trusted program suddenly loses access after Avast changes, the issue may be Avast Firewall, Web Guard/Web Shield, Browser Shield, VPN, or an overly strict app rule.
The safest fix is not to turn Avast off permanently. First, confirm Avast is actually involved, then allow the trusted app through Firewall, reset the app rule, check Web Guard/Web Shield, update Avast, and only use temporary disabling for testing. Avast’s official Firewall guide says users can allow internet access for a blocked app from **Protection > Firewall**, then adjust the app’s rules. ([Avast Support][1])

.. Quick Answer: How to Fix Avast Blocking Internet
To fix **Avast blocking internet**, restart your PC and router, update Avast, then open **Avast > Protection > Firewall** and check the **Blocked** or **All** apps list. Find the trusted app, open its rules, remove blocking rules, and add an allow rule. If only websites fail, temporarily disable Web Guard/Web Shield to test, then add a safe exception instead of leaving protection off. ([Avast Support][2])

.. Why Avast Blocks Internet Access
Avast may block internet access when it thinks an app, browser, website, network, or connection behavior is risky. This can happen after an Avast update, Windows update, app update, firewall rule change, browser extension issue, VPN conflict, or network profile change.
Common causes include:
* Avast Firewall blocked a trusted app.
* A browser rule is too strict.
* Web Guard or Web Shield is blocking a website.
* Browser Shield is blocking browser behavior.
* Avast SecureLine VPN is not connecting properly.
* The app is listed under blocked apps.
* A custom Firewall rule is wrong.
* Another antivirus or firewall is conflicting.
* The router or DNS is causing the issue, not Avast.
* The website is genuinely unsafe or compromised.
Avast’s support pages separate these issues into Firewall app access, Web Guard website access troubleshooting, Browser Shield, Core Shields, and VPN-related protection, so the correct fix depends on what exactly is blocked. ([Avast Support][3])

.. First Check: Is Avast Really Blocking the Internet? ✔ 1➜866((490))➜0338 ⚡
Before changing settings, confirm whether Avast is the cause.
Try this quick test:
1. Open two or three trusted websites.
2. Try another browser.
3. Check whether only one app is blocked or the whole internet is down.
4. Restart your router.
5. Restart your PC.
6. Temporarily disable the relevant Avast shield only for testing.
7. Turn it back on after the test.
Avast’s website-access troubleshooting guide recommends temporarily disabling Web Guard, restarting the browser, and trying the website again to confirm whether Avast is involved. ([Avast Support][4])
..# Read the result
| What happens | Likely issue |
| | -- |
| Only one app cannot connect | Avast Firewall app rule |
| Only one website is blocked | Web Guard/Web Shield or site reputation |
| All browsers fail | Firewall, VPN, DNS, router, or network issue |
| Internet works when Avast shield is off | Avast setting needs adjustment |
| Internet still fails when Avast is off | Router, DNS, Windows, ISP, or browser issue |

.. 1. Restart Avast, Your PC, and Your Router
Start with the cleanest reset. This fixes temporary app-rule, DNS, and network glitches.
1. Close your browser and internet apps.
2. Restart your computer.
3. Turn off your router for 30 seconds.
4. Turn the router back on.
5. Wait until Wi-Fi reconnects.
6. Open Avast.
7. Try browsing again.
If the internet works after restart, you may not need deeper changes.

.. 2. Update Avast Antivirus
A bad rule or protection bug may be fixed in a newer Avast update. Update Avast before changing many settings.
General steps:
1. Open Avast.
2. Go to **Menu**.
3. Open **Settings**.
4. Find the update section.
5. Check for app and virus definition updates.
6. Restart the PC if Avast asks.
If Avast started blocking the internet after a recent update, another update or rule refresh may solve it.

.. 3. Allow a Trusted App Through Avast Firewall
Use this when one app cannot connect to the internet, but your browser and other apps work.
For Avast Antivirus on Windows:
1. Open **Avast Antivirus**.
2. Go to **Protection**.
3. Click **Firewall**.
4. Open the **Apps** tab.
5. Change the view to **All** or **Blocked**.
6. Find the blocked app.
7. Open app options or rules.
8. Remove blocking rules.
9. Add an allow rule.
10. Test the app again.
Avast’s official guide for blocked apps says to open **Protection > Firewall**, choose the **Apps** tab, switch to **All**, find the app, open app rules, delete existing rules if needed, and add a new allow rule. ([Avast Support][2])
Use this for apps like:
* Chrome
* Edge
* Firefox
* Outlook
* Zoom
* Steam
* Discord
* Game launchers
* Remote work tools
* Business software
* Cloud sync apps
Only allow apps you trust. Do not allow unknown apps just because they ask for internet access.

.. 4. Check the Blocked Apps List
Avast has a **Blocked & Allowed apps** settings area. This is useful when Avast keeps blocking the same app even after you change Firewall settings.
Steps:
1. Open **Avast Antivirus**.
2. Go to **☰ Menu**.
3. Click **Settings**.
4. Select **General**.
5. Open **Blocked & Allowed apps**.
6. Check whether your app appears under blocked apps.
7. Move trusted apps to allowed apps if appropriate.
Avast’s support page says the Blocked & Allowed apps screen is located at **Menu > Settings > General > Blocked & Allowed apps** and shows lists of blocked and allowed apps. ([Avast Support][5])

.. 5. Reset Avast Firewall Rules for the App
If an app was blocked by mistake, resetting its rules can be cleaner than guessing which rule is wrong.
Use this when:
* The app worked yesterday.
* The app was updated recently.
* You accidentally clicked block.
* The same app appears in the Firewall blocked list.
* Only that app has no internet.
General process:
1. Open **Avast > Protection > Firewall**.
2. Go to the app list.
3. Find the app.
4. Open its rules.
5. Remove old blocking rules.
6. Create a fresh allow rule.
7. Restart the app.
Avast’s Firewall application rules page says app rules are available from **Protection > Firewall > Settings gear > View Firewall rules > Application rules**. ([Avast Support][6])

.. 6. Fix Avast Blocking Websites
If apps work but a website will not open, the issue may be Web Guard, Web Shield, Browser Shield, DNS, or the site itself.
Try this:
1. Check the URL spelling.
2. Try another trusted website.
3. Try another browser.
4. Temporarily disable Web Guard/Web Shield only for testing.
5. Restart the browser.
6. Test the website again.
7. Turn Web Guard/Web Shield back on.
8. Add an exception only if the website is safe.
Avast’s website troubleshooting guide says to temporarily disable Web Guard, restart the browser, and try accessing the website again to check whether Avast is involved. ([Avast Support][4])
Do not add exceptions for suspicious sites, cracked software pages, fake login pages, or websites your browser also warns about.

.. 7. Check Avast Browser Shield
If the issue happens mostly in a browser, Browser Shield may be involved. Avast says Browser Shield is enabled by default and recommends keeping it enabled, only disabling it temporarily for troubleshooting. ([Avast Support][7])
Try this:
1. Open Avast Premium Security or Avast One.
2. Find **Browser Shield**.
3. Turn it off only temporarily.
4. Restart the browser.
5. Test the website.
6. Turn Browser Shield back on.
7. Add a safe exception only if needed.
If disabling Browser Shield fixes the issue, the site, extension, or browser action may have triggered protection.

.. 8. Add a Website Exception Only If It Is Safe
Use website exceptions carefully. An exception tells Avast to stop checking that specific item in the same way, so it can lower protection for that site.
Add an exception only when:
* You typed the official URL yourself.
* The site belongs to a trusted company.
* The site is not a download/crack/keygen page.
* You tested another browser.
* The block appears to be a false positive.
* You understand the risk.
Avast has official guidance for excluding files or websites from scans, but exceptions should be narrow and used only for trusted items. ([Avast Support][8])

.. 9. Check Avast SecureLine VPN
If you use Avast SecureLine VPN, the VPN connection itself may be the reason the internet is not working. Avast describes SecureLine VPN as a tool that connects through secure Avast VPN servers using an encrypted tunnel. If that tunnel fails, websites or apps may not load correctly. ([Avast Support][9])
Try this:
1. Open Avast SecureLine VPN.
2. Disconnect the VPN.
3. Try opening a website.
4. If the internet works, reconnect to a different VPN location.
5. Restart the VPN app.
6. Update Avast SecureLine VPN.
7. Check whether your network blocks VPN traffic.
If internet only fails when the VPN is connected, the issue is likely VPN server, VPN protocol, DNS routing, or local network restriction.

.. 10. Temporarily Disable Avast Protection for Testing Only
This is not the first fix, but it can help confirm the cause. Avast’s official temporary-disable guide covers disabling protection in Avast Premium Security, Avast Free Antivirus, and Avast One. ([Avast Support][10])
Use this carefully:
1. Disable only for a short duration.
2. Test the website or app.
3. Turn protection back on immediately.
4. Do not download unknown files while protection is disabled.
5. Do not browse risky websites during the test.
If internet works only while Avast is disabled, adjust the specific shield or firewall rule instead of leaving Avast off.

.. 11. Repair Avast If Internet Blocking Continues
If Avast settings look normal but the internet still breaks, the installation may be corrupted.
Try repair:
1. Open Windows **Settings**.
2. Go to **Apps**.
3. Find Avast.
4. Choose **Modify** or **Uninstall/Change**.
5. Select **Repair** if available.
6. Follow the prompts.
7. Restart your PC.
8. Test internet again.
Repairing is safer than manually deleting Avast files.

.. 12. Reinstall Avast as a Last Fix
Reinstall Avast only after you have tried Firewall rules, Web Guard/Web Shield checks, app allow rules, and repair.
Before reinstalling:
* Save your Avast Account login.
* Check your activation details if paid.
* Download the latest installer from Avast.
* Restart after uninstalling.
* Install fresh and update.
* Test internet before changing many settings.
Reinstalling helps if Avast rules, components, or network filters are damaged.

.. What You Should Not Do
Avoid these risky fixes:
* Do not permanently disable Avast.
* Do not allow unknown apps through Firewall.
* Do not exclude the whole browser unless necessary.
* Do not exclude the entire Downloads folder.
* Do not ignore repeated website warnings.
* Do not install another antivirus on top of Avast.
* Do not follow fake support-number pop-ups.
* Do not use cracks, keygens, or “activation patch” files.
If Avast blocks something suspicious, treat it as a warning first. Confirm safety before bypassing it.

# People Also Ask: Avast Blocking Internet FAQs
.. Why is Avast blocking my internet? ✔ 1➜866((490))➜0338 ⚡
Avast may block internet because Firewall rules, Web Guard/Web Shield, Browser Shield, VPN, or blocked-app settings are stopping a connection. It may also block a website or app because it appears unsafe, has low reputation, or behaves suspiciously.
.. How do I stop Avast from blocking internet access? ✔ 1➜866((490))➜0338 ⚡
Open **Avast > Protection > Firewall**, check the blocked app list, and allow the trusted app. If only a website is blocked, temporarily test Web Guard/Web Shield, then add a narrow exception only if the website is safe. ([Avast Support][2])
.. How do I allow an app through Avast Firewall? ✔ 1➜866((490))➜0338 ⚡
Open **Avast Antivirus > Protection > Firewall**, select the **Apps** tab, switch to **All** or **Blocked**, find the app, open its rules, remove blocking rules, and add an allow rule. Avast’s official guide provides this blocked-app access path. ([Avast Support][2])
.. Why does Avast block Chrome or Edge? ✔ 1➜866((490))➜0338 ⚡
Avast may block Chrome or Edge if a Firewall rule, Browser Shield setting, Web Guard/Web Shield alert, suspicious extension, or unsafe website triggers protection. Test another browser, check blocked apps, and review website warnings before allowing access.
.. Is it safe to turn off Avast Firewall? ✔ 1➜866((490))➜0338 ⚡
Only turn it off briefly for testing. Do not leave Avast Firewall disabled permanently. A safer fix is to allow the trusted app, reset the app rule, or add a narrow exception for a verified safe website.
.. How do I check blocked apps in Avast? ✔ 1➜866((490))➜0338 ⚡
Open **Avast > Menu > Settings > General > Blocked & Allowed apps**. Avast says this screen shows the list of blocked apps and allowed apps, helping you review what Avast is restricting. ([Avast Support][5])
.. Can Avast Web Shield block websites? ✔ 1➜866((490))➜0338 ⚡
Yes. Avast’s web protection can block suspicious or unsafe websites. Avast’s website troubleshooting guide recommends temporarily disabling Web Guard/Web Shield only to check whether Avast is involved, then turning protection back on. ([Avast Support][4])
.. Can Avast VPN cause no internet? ✔ 1➜866((490))➜0338 ⚡
Yes. If Avast SecureLine VPN cannot connect correctly, websites and apps may fail to load. Avast describes SecureLine VPN as routing traffic through encrypted Avast VPN servers, so VPN server or tunnel problems can affect internet access. ([Avast Support][9])
.. Should I add a website exception in Avast? ✔ 1➜866((490))➜0338 ⚡
Add a website exception only if you are sure the site is safe. Avoid exceptions for unknown download sites, cracked software pages, fake login pages, or websites that other security tools also flag.
.. What should I do if Avast keeps blocking internet after all fixes? ✔ 1➜866((490))➜0338 ⚡
Repair Avast, restart Windows, update Avast, check Firewall rules again, test without VPN, and reinstall Avast only if the issue continues. If a trusted app or website is still blocked, contact official Avast support with the exact alert and app/site name.

.. Conclusion: Best Fix for Avast Blocking Internet
The best way to fix **Avast how to fix antivirus blocking internet** is to avoid disabling protection permanently and target the exact cause. If one app is blocked, fix Avast Firewall app rules. If one website is blocked, test Web Guard/Web Shield and add a safe exception only when verified. If the whole internet fails, check VPN, Firewall, DNS, router, and Avast repair.
Start with update, restart, Firewall allow rules, and Web Guard testing. Use exceptions carefully, keep protection enabled, and only reinstall Avast if the blocking continues after rule and repair fixes.