Few things are more frustrating than trying to install a program you actually need, only to have your own computer slap your hand away. If you’ve recently seen the pop-up: "Your security settings have blocked an application from running with an expired or incompatibility" (sometimes labeled as the "exclusive" error), you’re not alone.
The "security settings have blocked an application exclusive" error can arise from several factors: your security settings have blocked an application exclusive
The "exclusive" or "blocked" error usually appears for three reasons: Fix: "Your Security Settings Have Blocked an Application"
The resolution depends on the user's authority over the system and the nature of the application. Network and gateway controls Scenario D: Your Security
If you’ve manually set your “Allow applications downloaded from” setting to App Store Only, any external app will trigger this error.