Avast For Mac Can't Scan Some Files

Is not the sort of antivirus product to give you peace of mind. In practice, it does miss some malware every now and then. You'll need backup virus protection, which raises the question why you should get Avast in the first place.
Avast Security and Avast Security Pro are the two Avast plans that are compatible with Mac platform. The former is a freeware that, much like Avast Free Antivirus for Windows, comes with basic anti-malware security, web and email shields, and a WiFi security scanner (checks your network and connected devices for vulnerabilities).

In very rare cases, Avast may detect and block some programsor website pages as a virus, although you know for sure it’s safe. These wrong detections are called false positives. If such false-positive detection prevails after the virus definitions update, you may want to exclude the detected software or website from the Avast scan.

Hello you ok? There is nothing wrong with the avast antivirus program dont allways listen to what people may say about it. The reason that avast is doing what you said is because if you dont specify the correct scanning folders it will scan the wrong areas and then display that message during the scanning process. I'm new to Avast. I've read through the forum and haven't found a satisfactory answer to my question. Avast found 4 infected files on my computer and deleted them, but it said there are 205 files it was unable to scan for some reason. Avast Free Antivirus is a capable tool which provides all the core antivirus essentials for Windows, Android and Mac. Real-time detection picks up known threats as they appear, web filtering blocks access to dangerous links, and unknown files are analyzed in the cloud to spot the very latest malware. Avast Mac Security 2015 - version 11.5 (45630) - virus definitions version 15122000. The virus scan is identifying.exe and.dll files as the issue. These are Windows files. Make sure that the installation file you are trying to run is the Mac version and not the Windows version. It sounds like @rovinggecko had some luck taking the two.

This is a perfect fix when Avast is blocking one of your favorite programs, but you still want to run/allow it. In the past, Avast was blocking some of the most popular software (Steam for example) for a short period of time. To be fair false-positive detection happens basically to every antivirus on the market, it’s not just Avast.

Anyway, we strongly recommend scanning the file/webpage also through some other virus engines to make sure it’s really clean. For this, you can use a free online scanner VirusTotal. Sometimes you may think the file/URL are safe but they are actually infected and it’s not just Avast which is detecting them.

Quick Summary

Make sure the blocked file or webpage is not malicious by testing it at www.virustotal.com
Add it as an exception by going to Settings » General » Exclusions
Confirm by clicking OK

Read more detailed steps and other options including screenshots below.

In this guide, you will learn how, but we strongly suggest using exclusions only when you’re an advanced user. There are three basic types of exclusions/exceptions in the Avast Antivirus 2019:

Global exclusion list of the folder/file/program/application from being scanned at all
Global exclusion list of the website/URL from being scanned at all
Exclusions in the specific shield (File System Shield, Mail Shield, or Web Shield)

Global Whitelist – Exclude Specific Folder/File/Program/Application from All Avast Scans

If you want to add the exception for the specific website, domain, or URL from being scanned by Avast, follow these steps. This is so-called Global Whitelist or Exclusion List.

Open the Avast user interface and go to ‘Settings‘ » ‘General‘
Find the tab ‘Exclusions‘ and add specific programs to the ‘File paths‘ tab
Added applications and/or paths will now be excluded from any Avast scanning

Adding File/Folder/Program Exception into Avast 2019

On the screenshot above you can see that application ‘FileZilla FTP Client‘ and ‘DAEMON Tools Lite‘ are excluded. Such exceptions also apply to all sub-folders on these folders as we have used ‘/*’ in the path.

Global Whitelist – Exclude Specific Website/URL from All Avast Scans

If you want to add the exception for the specific Avast shield, follow these steps.

Open the Avast user interface and go to ‘Settings‘ » ‘General‘
Find the tab ‘Exclusions‘ and add specific websites or URLs in the ‘Urls‘ tab. Please note ‘http://’ will be added automatically, so if you want to exclude Yahoo, just type yahoo.com. Please note you need to differentiate between ‘http://’ and ‘https://’
Added websites/URLs will now be excluded from any Avast scanning

Adding Website/Domain/URL Exception into Avast 2019

On the screenshot above you can see that URLs ‘https://www.gmail.com‘ and ‘http(s)://.gmail.com‘ are excluded. Such exception also applies to all pages on these domains as we have used ‘/*’ in the path.

Add Exception for Specific Avast Antivirus Shield (File System Shield, Mail Shield, or Web Shield)

If you want to add the exception for the specific Avast shield, follow the steps further.

Open the Avast user interface and go to ‘Settings‘ » ‘Active Protection‘
Select the shield (File System, Mail, or Web) for which you want to add the exception, and click on ‘Customize’ link
Find the menu item ‘Exclusions‘ and add the item you want to exclude from scanning by the specific Avast shield. You can also specify when the exclusion applies (for reading, writing, or executing)
Please note that global exclusions are always applied although they aren’t listed in the specific shield. Also please note a lot of items are listed there by default

Adding Specific Shield (File System, Mail, or Web) Exception into Avast 2019

On the screenshot above, you can see many items are excluded from the File System Shield scan by default. We haven’t added any of them.

Avast For Mac Can Scan Some Files

[IMPORTANT] Restart All Avast Shields to Make Exclusion Work

After you successfully add the file or webpage to exclusions you need to actually restart all Avast shields to make it work. Otherwise, Avast will keep detecting and blocking it as a threat.

Find Avast icon in the Windows system tray (click on the top arrow)
Go to ‘Avast shields control‘ » ‘Disable for 10 minutes‘ » confirm
Go again back to ‘Avast shields control‘ » ‘Enable all shields‘

Restarting All Avast Shields From the Windows System Tray

Now Avast should stop detecting the added files/URLs in the exclusions. You can also simply just restart your Windows.

Report a False Positive Detection to Avast

We also strongly suggest reporting 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

Avast For Mac Can't Scan Some Fileshare

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.