Part of This App Has Been Blocked Error Using the Java and Kotlin by IntelliJ IDEA Extension in VS Code

Question:

Tried to load a Java project in VS Code with the Java and Kotlin by IntelliJ IDEA extension installed, but Windows 11 notified that some parts of the extension were blocked, so it couldn't be loaded. The screenshot is like this:

Answer

Microsoft has introduced a new security feature in Windows 11 called Smart App Control. Smart App Control was introduced to identify and prevent malicious software from running on Windows 11 PCs with Smart App Control enabled. If enabled, it may cause some parts of the IntelliJ server extension not to work as expected or be blocked.

Smart App Control works alongside your other security software, such as Microsoft Defender or non-Microsoft anti-virus tools, for added protection.

When attempting to run the IntelliJ server extension on a Windows 11 computer that has Windows Smart App Control enabled, the extension may fail to load, or parts of the product may be blocked from running after installation. A toast notification in the bottom-right corner may indicate a failure of some DLL file in the IntelliJ server extension, either after it is installed or after the computer has been upgraded to Windows 11 version 22H2.

Workaround

There is currently no way to bypass Smart App Control protection for individual apps.

Smart App Control can be disabled when the user has proper permissions and the settings are not enforced by GPO.

To enable or disable Smart App Control, first click the Windows Start button. Start typing Smart App Control in the search field. Click Smart App Control to see the status of Smart App Control and options to either enable or disable it.