Windows 10: Windows Defender not detecting infected zip files.

I am able to open and run infected zip files without any warning by Windows Defender on Windows 10,while Kaspersky was alerted to that very same infected zip file as an alert showed up on screen and blocked any chance of opening it, and placed that infected file in quarantine , and how do you explain that?. All antiviruses should be fully alert to an infected zip file download and after opening it ?,than not detect it and the hidden malware just took over? . Even Eicar test files can bypass Windows Defender as it has been tested also from the A.M.T.S.O website, while my installed Kaspersky free warning shows up on the screen...?.Kingsoft P.C Doctor after its installed seems to be fully alert way more than W.D? ,when downloading Eicar test files? ,as warnings showed up in red on screen. So how can one say W.D in 2018 is better than its rivals after just doing a basic fake malware detection test?...



***Title modified from: Infected Zip Files?***

:)

 

.zip can't be set to File Explorer

Hello Kathleen,

I understand your concern, and we in Community will try to help you in the best possible way we can.

I suggest you to follow the below steps and check if it helps.

• 
  Type Default programs
  in the search bar and press enter
  
• 
  Click on choose default programs by file type
  
• 
  Select .zip
  and select File Explorer
  

Also you can visit the below link Zip and unzip files.
(Steps applies to Windows 10).

http://windows.microsoft.com/en-CA/windows-8/zip-unzip-files

Hope this helps. Post us with status we will be glad to help you.

 

Windows Defender notification of malware detection

Hello,

Thank you for keeping us posted and we appreciate your continued patience on this issue.

At this point, I suggest you to update the Windows Defender program and check if it helps.

To check for new Windows Defender definitions manually:

• Open Windows Defender.
• Click the arrow next to the Help button, and then click Check for updates. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.

Also, check if the detection is of the same malware file or not. Again, see if it is any specific program or a file you try to access which triggers the detection.

Additionally, view the log in Event Viewer to check if the malware is removed every time it is prompted.

To open the Event Viewer. To do so, follow the below steps.

• Go to the Control Panel and choose to click on the
  Administrative Tools icon.
• The above action will open up a new window of the Administrative Tools where you will see the
  Event Viewer.
  

You can view Windows Defender "Operational" events in Event Viewer under Applications and Services Logs -> Microsoft -> Windows -> Windows Defender.

Kindly keep us posted, for us to be able to assist you further.

Thank you.

 

Access denied to zip file

Hi Stephanie,

The issue that you're experiencing may be due to a corrupted user profile. We have found a workaround regarding the "Access denied" error. Kindly follow the steps below.

• Press Windows key + E to open File Explorer.
• Copy the files that you want to zip.
• Paste it in the Downloads folder.
• From there, zip your file. You may follow the steps provided in this
  article.

Feel free to contact us if you need assistance with Windows.