Windows 10: Windows Defender Firewall - Previously allowed APP disappears

I'm having an issue with Defender firewall. I manually allow an app through the firewall on both public and private networks. The app works fine. When I restart the computer the approved app is no longer listed and the app does not work properly.

What I'm trying to do is use Teamviewer to remotely control an Intel NUC via the NUC IP address on a local area network. If I add Teamviewer to the list of apps through the firewall it works fine, but upon restart I cannot login to the NUC with Teamviewer and upon investigation the app is missing from the firewall approved apps.

This is with Windows 1809.

I have a second NUC running Windows 1803 and it does not have this problem.

Any thoughts?

:)

 

Windows Firewall blocks App Store from downloading new apps

Hi,

Let's try to check if the app store you're referring to if it's really blocked by Windows Firewall. See these steps:

• Open Windows Firewall from the taskbar >
  Firewall & network protection > Allow an app through firewall.
• A new window will show up containing the list of the apps that ca be allowed through Firewall.
• Look for the app you want to be accessed, and make sure that the Domain, Private and Public are ticked. That would allow the app store to be accessed.

Let us know what happens after doing the suggestion.

 

Allow an app through Windows Firewall

Hello,



Thank you for posting your query in Microsoft Community.



I will help you regarding this.

I request you to try the below steps:

• Right click on Start menu icon.
• Select Control Panel.
• Now select Windows Firewall.
• Select "Allow an app or feature through Windows Firewall" from left hand side pane.
• Select the app which you want to allow.

I hope this helps you. If you have any further queries, feel free to contact us. We will be happy to help you.



Thank you.

 

Allow apps to communicate through Windows Defender Firewall

Hi,

Turning off the Windows Firewall allows threats that can compromise the security of your computer. To ensure that we can provide the appropriate resolution for your concerns, we’d like to ask you a few questions:

• Which version or build of Windows device are you using? To know, press
  Windows + R to open the Run window. Type winver
  and press Enter. A new window will open showing the version and build number of your Windows device.
• What were the recent changes made on your computer before you experienced this issue?
• What troubleshooting steps have you done so far?
• What are the apps that you want to install that requires turning off the
  Windows Firewall?
• Did you receive any error messages?
• Do you have any other anti-virus programs installed on your computer?
• When was the last time that you scan your computer manually?

In addition, we recommend performing a full system scan for your computer to see if there are viruses, malware, malicious programs or script that prevents your computer to work properly. To do this, follow these steps:

Step #1: Perform a full system scan.

• Press Windows + S to open Search Box.
• Type Windows Defender, then click it.
• In Home tab, select Full under
  Scan options.
• Click Scan now to begin the thorough scanning of your computer.
• Wait for the process to finish.
• If there are any findings, send us the results through screenshot.
• Before closing the application, make sure that Windows Defender is always turned on.

Step #2: Set a schedule on
Windows Defender to perform periodic scans. Visit this link:
Schedule a scan in Windows Defender Antivirus to know how to set scan schedules for your computer.

Get back to us once you provide us these additional information.