Update microsoft-recommended-driver-block-rules.md

windows/security/threat-protection/windows-defender-application-control/microsoft-recommended-driver-block-rules.md

@@ -36,6 +36,9 @@ Microsoft has strict requirements for code running in kernel. So, malicious acto
 
 Drivers can be submitted to Microsoft for security analysis at the [Microsoft Security Intelligence Driver Submission page](https://www.microsoft.com/en-us/wdsi/driversubmission). For more information about driver submission, see [Improve kernel security with the new Microsoft Vulnerable and Malicious Driver Reporting Center](https://www.microsoft.com/security/blog/2021/12/08/improve-kernel-security-with-the-new-microsoft-vulnerable-and-malicious-driver-reporting-center/). To report an issue or request a change to the vulnerable driver blocklist, including updating a block rule once a driver vulnerability has been patched, visit the [Microsoft Security Intelligence portal](https://www.microsoft.com/wdsi) or submit feedback on this article.
 
+> [!NOTE]
+> Blocking drivers can cause devices or software to malfunction, and in rare cases, lead to blue screen. The vulnerable driver blocklist is not guaranteed to block every driver found to have vulnerabilities. Microsoft attempts to balance the security risks from vulnerable drivers with the potential impact on compatibility and reliability to produce the blocklist.
+
 ## Microsoft vulnerable driver blocklist
 
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