Microsoft Teams
A Microsoft customizable chat-based workspace.
10,894 questions
Windows Defender and Microsoft Teams
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js011
1
Reputation point
Microsoft Teams
{count} votes
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JimmyYang-MSFT 58,576 Reputation points Microsoft External Staff2021-07-13T05:28:38.367+00:00 Hi @js011
Does this phenomenon only happened in Microsoft Teams? What about other office applications?
Based on my research, if you don't want to see these notifications, you could go to Control Panel > System and Security > Windows Defender Firewall > Allow an app or feature through Windows Defender Firewall. Click "change settings" and try to allowed Teams application in Allowed apps. For more details, you could refer to:
https://www.howtogeek.com/435610/why-does-windows-defender-firewall-block-some-app-features/
In addition, please check if there is any GPO settings that cause you always received this notification.
Note: Microsoft is providing this information as a convenience to you. The sites are not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there. Please make sure that you completely understand the risk before retrieving any suggestions from the above link.
If the response is helpful, please click "Accept Answer" and upvote it.
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js011 1 Reputation point
2021-07-14T15:38:26.887+00:00 Thanks for the note. I already tried that. It didn't help.
If I close the alert, it still lets me use Teams. If I end the Teams task and launch it again, it gives the alert again.It looks like it doesn't like %username%, %localAppData%, or %userprofile%. If I type the actual username, it doesn't give me the alert.
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JimmyYang-MSFT 58,576 Reputation points Microsoft External Staff
2021-07-16T09:01:19.18+00:00 Do you have any operations before this problem occurred?
You could try to reset Windows Security Centre service to see if works. Here are the steps for your reference:
- Press Windows key + R. In the Run dialog box, type services.msc, and hit Enter to open Services.
- Find the Security Center service.
- Right-click the Security Center service, and go to Reset.
- Restart your computer.
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js012 1 Reputation point2021-07-16T22:41:38.403+00:00 I tried that. Didn't help. I think I found the issue. If I remove the variable and entered the actual username, it doesn't alert me anymore. But I don't want to enter all the current and future usernames on the computer. I would like to use a variable (%localappdata%, %userprofile%) or similar as I want to make sure it covers any user who logs in to the computer. Or I might just install Teams machine-wide which also changes the installation path.
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JimmyYang-MSFT 58,576 Reputation points Microsoft External Staff
2021-07-26T01:57:28.517+00:00
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