Sometimes Avast Antivirus may be blocking you from running a program or accessing a web page, which you know is totally safe. Usually, it’s because of the low application occurrence within the Avast community. Therefore, Avast can’t properly tell if the program is safe or not, and will try to protect you.
Also, Avast detects so-called ‘Potentially Unwanted Programs‘, which are actually wanted in some cases, and so-called ‘False-Positives‘, which means the program is safe but Avast’s detection is wrong. Unfortunately this often happens with popular games and services like League of Legends (LoL), Steam, GoG Galaxy, Minecraft, uTorrent, BitTorrent, Windows Update, Google, Java, Chrome and other launchers which are being often updated. Usually the false-positive detection lasts only a few hours, but can be very annoying.
Avast Antivirus for Mac is a “free” software program that protects your Mac from viruses, malware, spyware, and ransomware. The free version doesn’t do much more than allow you to scan for malware that has already made its way into your system. And you can only scan so often – once a day is typical.
- Click the link below to download the Avast Security setup file: Avast Security for Mac; Double-click the downloaded file avast.setup.dmg. In the dialog that appears, double-click the Avast setup option and follow the on-screen instructions, then click Install to complete the installation.
- Pros / Avast detected every Mac malware threat we used during testing. Cons / This program doesn’t automatically scan USB files when you plug drives in. Verdict / Avast Security for Mac is good software for detecting both Mac and Windows malware plus offers extra protection with its password manager and VPN.
Quick Summary
- Make sure the blocked file or webpage is not malicous by testing it at www.virustotal.com
- Add it as exception by going to Avast user interface » Settings » General » Exclusions
- Confirm by clicking OK
Read more detailed steps and other options including screenshots below.
When Avast blocks something, you will always get a pop-up notification informing you about the threat.
Solution/Fix for the Invalid Certificate Issue Caused by the HTTPS Scan
Recently a lot of Avast users (especially the ones running Windows XP) are experienced an issue when Avast has been blocking several major websites because of the invalid cloudflaressl.com certificate. The full message on the pop-up is ‘Avast Web Shield has blocked access to this page because the following certificate is invalid: [name of the certificate]‘.
To fix this try one of the following actions:
- Disable HTTPS scanning by going to settings » Active Protection » Web Shield » Customize » Main settings » Un-check ‘Enable HTTPS scanning‘ and restart your computer
Disabling HTTPS Scanning in Avast 2018 Web Shield Settings
Solution/Fix When Avast is Blocking Internet Connection Completely
Sometimes Avast may even block completely the Internet access so user is not able to visit any website. If this happens to you, try one of the following actions:
- Repair your Avast installation by going to Programs » Uninstall a program » Avast » select Repair and restart your computer
- Disable HTTPS scanning by going to settings » Active Protection » Web Shield » Customize » Main settings » Un-check ‘Enable HTTPS scanning‘ and restart your computer
Solution/Fix When Avast is Blocking Specific Website, Program or Game
There are two ways to unblock any program or website from Avast blocking. Please note, you should do it only if you are 100% sure the blocked file is safe for you and your computer. Even if you own the blocked site, doesn’t mean it wasn’t hacked and injected with dangerous malware. For checking the program/file with other Antivirus vendors, you can use online detection at VirusTotal.
1. Add Blocked Program or Website to Exclusion List (Whitelist) to Unblock it
Using the exceptions in Avast you can simply add any file or URL to the list of exclusions and exclude it from scanning and shield protection, therefore also from blocking. For more information about adding exceptions, check our full guide ‘How to Add File/Website Exception into Avast Antivirus 2018‘.
Adding File/Folder/Program/Website URL Exception into Avast 2018
2. Temporarily Turn Off Avast Protection
If you want install or run a program but it’s being blocked by Avast you can simply turn off Avast shields for a short period of time. For more information about turning off Avast or it’s shields, check our full guide ‘How to Turn Off (Pause, Disable) Shields in Avast Antivirus 2018‘.
Temporarily Disabling Avast Protection from the Windows Tray
3. Report a False Positive Detection to Avast
We also strongly suggest to report the detection you believe is a false positive directly to Avast team. They will look into it and eventually confirm the reported file, software, or website is clean.
Link to report is included on every in-product pop-up displayed when the harmful webpage or file is blocked. Just click on ‘Report the file as a false positive‘.
Avast Web Shield Has Blocked a Harmful Webpage or File Pop-up
Then you need to fill-in following simple form. In the additional info you can add a link from VirusTotal scan. Don’t forget to check the option ‘I know what I’m doing‘ and click on ‘Submit‘.
Avast In-product Form for Reporting False Positive Detection of Files or Websites
Alternatively you can use the official web form for reporting false positive detection.
Official Avast Web Form for Reporting False Positive Detection of Files or Websites
Additional Notes
Although we have used Avast Free Antivirus 2019 screenshots in this article, these steps are also applicable for all Avast Antivirus solutions (i.e. also for Avast Pro Antivirus, Avast Internet Security, or Avast Premier) running the latest version available.
Steps are relevant for all Windows versions – Windows XP, Windows Vista, Windows 7, Windows 8, Windows 8.1 and Windows 10 (including Anniversary Update).
Managing exceptions or turning off Avast protection may leave your computer at risk.
Download and installation
What are the system requirements for Avast Security?
The system requirements for Avast Security and Avast Premium Security are:
- Apple macOS 10.14.x (Mojave), Apple macOS 10.13.x (High Sierra), Apple macOS 10.12.x (Sierra), Apple Mac OS X 10.11.x (El Capitan), Apple Mac OS X 10.10.x (Yosemite).
- Intel based Mac computer with 64-bit processor.
- 512 MB RAM or above (1 GB RAM or higher preferred).
- 256 MB minimum hard disk free space.
- Internet connection (to download and register the product, for automatic updates of the program and virus database).
- Optimally standard screen resolution not less than 1024 x 768 pixels.
How do I download and install Avast Security?
To download and install Avast Security or Avast Premium Security:
- Click the link below to download the Avast Security setup file:
- Double-click the downloaded file
avast_security_online.dmg. - In the dialog that appears, double-click the Avast Security icon and follow the on-screen instructions.
- When installation is complete, click Close.
For detailed installation instructions, refer to the following article:
If you have purchased Avast Premium Security, activate your subscription by going to ☰ Menu ▸ Activate paid features and entering your activation code.
Do I need a subscription to use Avast Security?
No, a subscription is not necessary for the free version of Avast Security. After installation, Avast Security is ready to use. You can connect Avast Security to your Avast Account to benefit from the device management feature.
For additional features, upgrade to a paid subscription of Avast Premium Security. You must activate this product with a valid activation code.
How do I upgrade from Avast Security to Avast Premium Security?
To upgrade to Avast Premium Security:
- In your Applications folder, double-click the Avast icon to open the application.
- Click Upgrade on the main Avast Security screen.
- Follow the on-screen purchase instructions.
After purchase, Avast Premium Security automatically activates. If necessary, you can manually activate the product by going to ☰ Menu ▸ Activate paid features and entering your activation code.
How do I activate Avast Premium Security?
To manually activate Avast Premium Security:
- Open the order confirmation email you received after purchasing Avast Premium Security.
- Locate and copy the activation code from the confirmation email.
- In your Applications folder, double-click the Avast icon to open the application.
- Go to ☰ Menu ▸ Activate paid features.
- Type or paste your activation code into the text box, then click Activate.
To view the duration of your subscription, go to ☰ Menu ▸ My subscriptions. For detailed activation instructions, refer to the following article:
How do I connect Avast Security to my Avast Account?
After you download and install Avast Security, you can connect the product to your Avast Account to benefit from the device management feature.
To connect Avast Security to your Avast Account:
- In your Applications folder, double-click the Avast icon to open the application.
- Go to ☰ Menu ▸ Log in to Avast account.
- Enter your Avast Account credentials, then click Log In.
For detailed instructions, refer to the following article:
What is the difference between Avast Security and Avast Premium Security?
Avast Security is a free product that does not require a paid subscription to use.
Avast Premium Security includes additional features and requires a paid subscription. The additional features include Ransomware Shield and Wi-Fi Inspector.
Features
What is File Shield?
File Shield is the main layer of active protection in Avast Security. It scans programs and files saved on your Mac for malicious threats in real-time before allowing them to be opened, run, modified, or saved. If malware is detected, File Shield prevents the program or file from infecting your Mac.
What is Web Shield?
Web Shield is an additional layer of active protection in Avast Security. It scans data that is transferred when you browse the internet in real-time to prevent malware, such as malicious scripts, from being downloaded and run on your Mac.
What is Email Shield?
Email Shield is an additional layer of active protection in Avast Security. It scans your incoming and outgoing email messages in real-time for malicious content such as viruses. Scanning applies only to messages sent or received using a mail management software (email clients, such as Mail, Microsoft Outlook or Mozilla Thunderbird). If you access your web based email account via an internet browser, your Mac is protected by other Avast Security shields.
What is Ransomware Shield?
Ransomware Shield, available in Avast Premium Security, secures your personal photos, documents, and files from being modified, deleted, or encrypted by ransomware attacks. This feature automatically secures your Pictures and Documents folders and allows you to specify which other folders you want to protect from untrusted applications. Additionally, you can specify which applications are allowed to modify the files in your protected folders.
What is Wi-Fi Inspector?
Wi-Fi Inspector, available in Avast Premium Security, is an active protection component which continuously monitors your network and connected devices for threats.
What is the Virus Chest?
The Virus Chest is a safe place for storing potentially harmful files, completely isolated from the rest of the operating system. Files inside the Virus Chest are not accessible to any outside process, software application, or virus.
For more information about the Virus Chest including how to send files to the Avast Threat Labs, refer to the following article:
How do I run a scan?
To run an Avast Security scan:
- In your Applications folder, double-click the Avast icon to open the application.
- Click
…(three dots) next to Run Mac Scan. - Click Run Mac Scan or Scan Now on the tile of the scan you want to run.
You can run a quick scan of the most vulnerable areas of your Mac, or a thorough scan of the whole system, or quickly scan a particular folder or removable drive, or create and schedule your own scans.
For more information about each type of scan as well as scan settings, refer to the following article:
General settings
Delete Program File For Avast Vpn Mac
How do I check which version of Avast Security is installed?
To check which version of Avast Security is installed on your Mac, go to ☰ Menu ▸ Settings and select the General tab. The version number is displayed at the top of the screen.
How do I exclude files or websites from scanning by the Core Shields?
To set an exclusion for a Core Shield:
- In your Applications folder, double-click the Avast icon to open the application.
- Go to ☰ Menu ▸ Settings and select the Core Shields tab.
- Click Add Exceptions under the shield you want to set an exclusion for.
- If you are adding an exclusion for File Shield, select the file and click Open. For Web Shield and Email Shield, specify the server and service, then click Add.
For detailed instructions on how to set exclusions for Core Shields, refer to the following article:
How do I exclude files or folders from the pre-defined scans?
To set an exclusion for one of the pre-defined scans:
- In your Applications folder, double-click the Avast icon to open the application.
- Go to ☰ Menu ▸ Settings and select the Scans tab.
- Click Add Exceptions under the scan you want to set an exclusion for.
- Select a file or folder, then click Open.
For detailed instructions on how to set exclusions for the pre-defined scans, refer to the following article:
Troubleshooting
What does the status message 'Unable to scan' mean in scan results?
The status message 'Unable to scan' means that the file could not be scanned, possibly due to an encrypted ZIP archive or because the files are currently in use. The status does not mean that there is anything wrong with the file, only that it is not available for scanning.
What does the status message 'You are in passive mode' mean?
If you see the status You are in passive mode, you need to manually allow Avast Software extensions on your Mac. For detailed instructions, refer to the following article:
What should I do if I'm unable to browse the web or use other software on my Mac?
Avast Security shields detect and block suspicious files, dangerous websites, and unauthorized connections. In some cases, a Core Shield may cause connectivity issues. If you are unable to use online software or browse certain sites, use the troubleshooting steps below to determine if a shield is causing the issue:
- In your Applications folder, double-click the Avast icon to open the application.
- Click Core Shields.
- Click the ON (green) slider above File Shield and perform your original action (for example, if you were unable to access a certain site, try to access the site again).
- If the connectivity issue persists, click the OFF (red) slider to turn the shield on again, then repeat the above steps for each shield.
When you determine which shield is causing the connectivity issue, you can set an exclusion for a certain file, site, or mail server by using the steps in the following article:
How do I uninstall Avast Security?
Avast Security cannot be fully uninstalled by dragging the application to the Trash. To uninstall Avast Security:
Recover Deleted Files Mac Free
- In your Applications folder, double-click the Avast icon to open the application.
- Click Avast in the menu bar, then select Uninstall Avast Security from the context menu.
- Click Uninstall.
For detailed uninstallation instructions, refer to the following article:
- Avast Security 14.x for Mac
- Avast Premium Security 14.x for Mac
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- Apple macOS 10.14.x (Mojave)
- Apple macOS 10.13.x (High Sierra)
- Apple macOS 10.12.x (Sierra)
- Apple Mac OS X 10.11.x (El Capitan)
- Apple Mac OS X 10.10.x (Yosemite)