You should move it to trash' message at running time, it's just mean that the application is not certified by Apple, not identified as safe. If you received a ' Universal Media Server.app is damaged and can't be opened.' or ' Universal Media Server can't be opened because it is from an unidentified developper' or ' Universal Media Server can't be opened. Uninstall ActivTrak and reinstall a fresh copy of the agent.Gatekeeper, was first introduced in OS X Mountain Lion, it's a Mac security feature which prevents the user from launching potentially harmful applications. Relaunch System Preferences and go back to the Gatekeeper (Security & Privacy) settings:Ĥ. Enter the following command into the Terminal then hit return:ģ. Quit System Preferences if it is open and then open a new Terminal window using one of the following methods: ⌘ Command + ⇧ Shift + U, OR from /Applications/Utilities folder:Ģ. NOTE: If the “Anywhere” option does not appear, you can disable Gatekeeper permanently by following the steps below:ġ. You can now install applications that you trust. In the 'Allow apps downloaded from:' section, select 'Anywhere':Ħ. Enter your computer username and password, then select 'Unlock':ĥ. Select the 'General' tab, and click the lock in the lower left corner to allow changes:Ĥ. Open 'System Preferences' under the Apple menu:ģ. If Gatekeeper is preventing the installation of legitimate software such as ActivTrak, the feature can be disabled either temporarily or permanently.ġ. MacOS includes a feature called Gatekeeper, which has options to only allow trusted software from the App Store and/or identified developers.

Mac gatekeeper settings