Check if Flash Player is installed on your computer 2. SOLUTION 2: In some cases disabling the PPAPI Flash Player within the Chrome Plugins resolves the problem with not being able to install the Adobe Connect add-in. Download the latest version of Flash Player If you dont have the latest version, download it here: Adobe Flash Player download 3. Install Flash Player After you download Flash Player, follow the installation instructions that appear on the download page. Often times we run applications on our system that are not signed correctly or in some cases, just old. For Windows users, they often just get a warning along with an option to run the application anyway. However, that is not the case when it comes to Mac systems. When you try to run an application that is either not digitally signed correctly or other software that is developed by the community for different purposes, you might get the “ Application.app is damaged and can’t be opened” error message. The reason this error message occurs is pretty obvious. macOS has a specific security feature that checks the applications that you wish to run and then depending on the code signing, allows the application to be executed. However, in some scenarios, when the app you wish to run is an old and unsigned version, you are thrown the said error message as Gatekeeper does not allow it to run. The app is treated as unsafe and thus you are suggested to delete it.

Now, this might be really helpful in most of the cases but there are apps that are trusted and they are detected as unsafe by the Gatekeeper security feature. In such a case, to overcome the problem, what you will have to do is either change your System Preferences, run the application using the xattr command, or disable Gatekeeper for a while altogether. With that said, let us get into the various methods that’ll help resolve the issue. Method 1: Run the App From a Terminal WindowĪs it turns out, if you run the same application from a terminal window using superuser permissions, it will run without any issues.

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