Your Security Settings Have Blocked An Application Exclusive May 2026

If the error persists even on "Medium" security, the application might be "self-signed" (meaning the developer did not pay for a verified certificate). Modern Java versions can be extremely stubborn about this.

Method A: Use the Command Line Sometimes the Graphical User Interface (GUI) fails, but the command line works.

Method B: Use an Older Java Version (Advanced) Some legacy enterprise applications (often labeled "Exclusive") simply will not run on modern Java. In this case, you must: your security settings have blocked an application exclusive

Blocking messages like "Your security settings have blocked an application from running" are an important security control. Proper investigation, verification, and narrowly scoped remediation preserve security while minimizing disruption. Organizations should favor managed distribution, code signing, and auditable exception processes rather than broad disabling of protections.

Note: This method lowers the security posture of the system and should only be done for trusted, internal applications on non-critical workstations. If the error persists even on "Medium" security,

Modern operating systems and security tools sometimes block applications automatically. While this can be frustrating, it’s usually a protective measure to keep your system and data safe. This post explains why an app might be blocked, how to evaluate whether it’s safe, and step-by-step actions to resolve the block securely.

If you see a similar warning on Windows ("Windows protected your PC" or "An administrator has blocked you from running this app"): Type the following command and press Enter: java

For SmartScreen blocks in Windows 11:

You downloaded a legitimate tool like an older version of Adobe Creative Suite, a game from GOG, or a niche utility. The developer either hasn’t updated their security certificate or has let their Apple Developer Program membership expire.