Windows Defender , built into Windows 10, runs in the background and scans files for malware. To improve performance for tasks like compiling code or running virtual machines, you can add exceptions so Windows Defender never scans those files.
Warning : Be careful about what you exclude. Windows Defender will not scan excluded files and folders for malware.
How to add exceptions to Windows Defender in Windows Security
Step 1:
First, you need to launch Windows Security to change some settings. Open the Start menu and type Windows Security . Then, select the Windows Security app.
Step 2:
In Windows Security , navigate to Virus & Threat Protection . Then, click Manage Settings.
Step 3:
In Virus & Threat Protection Settings , scroll to the bottom of the page and click Add or Remove Exclusions .
Step 4:
On the Exclusions page , you can add or remove files that you want to exclude from Windows Defender scanning. To add an exception, click the Add An Exclusion button next to the large plus sign ( + ) icon.
Step 5:
A small menu will appear that allows you to specify the exception by File, Folder, File type or Process .
What you choose depends on the type of exception you are trying to throw. Here is what each option will do.
Select one of these options and make the necessary selections in the following pop-up dialog box. When you add an exception, it will appear in a list on the Exclusions page.
Step 6:
If you want to remove a defined exception, hover your mouse over it until a down arrow appears, then click the Remove button .
Step 7:
Once you're done, close Windows Security and your settings will be saved. The next time the system runs a Defender scan, the items you added to the exclusion list won't cause any problems.
How to Add Exceptions in Windows Defender Using PowerShell
Add exception file for Microsoft Defender Antivirus in PowerShell
This option is used to add a specific file as an exception, preventing it from being scanned by Microsoft Defender Antivirus.
1. Open PowerShell with admin rights .
2. Type the command below into PowerShell and press Enter.
Add-MpPreference -ExclusionPath "<đường dẫn="" đầy="" đủ="" của="" file="">" -Force
3. You can now close PowerShell if you want.
Add an exception folder for Microsoft Defender Antivirus in PowerShell
This option is used to add a specific exception folder, making it no longer scanned by Microsoft Defender Antivirus.
1. Open PowerShell with admin rights.
2. Type the command below into PowerShell and press Enter.
Add-MpPreference -ExclusionPath "<đường dẫn="" đầy="" đủ="" của="" file="">" -Force
3. You can now close PowerShell if you want.
Add file type exceptions to Microsoft Defender Antivirus in PowerShell
This option is to add a file extension to the exception, causing all files of that type to no longer be scanned by Microsoft Defender Antivirus.
1. Open PowerShell with admin rights.
2. Type the command below into PowerShell and press Enter.
Add-MpPreference -ExclusionExtension "" -Force
3. You can now close PowerShell if you want.
Add process exceptions to Microsoft Defender Antivirus in PowerShell
This option is used to add an exception process, which prevents any files associated with it from being scanned by Microsoft Defender Antivirus.
1. Open PowerShell with admin rights.
2. Type the command below into PowerShell and press Enter.
Add-MpPreference -ExclusionProcess "" -Force
3. You can now close PowerShell if you want.
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