Install non-App Store external software

By default，Mac computers cannot install external software from non-App Store sources。This is because Mac’s new system enables new security mechanisms。So how to solve this problem? This article will introduce how to allow the installation of non-App Store software on Mac。 Open system preferences：Click the Apple icon in the upper left corner of the screen，Then select "System Preferences" in the drop-down menu。 Go to Security & Privacy：In the System Preferences dialog，Select the "Security & Privacy" option。 Unlock settings：In the lower left corner of the Security & Privacy dialog box，Click the lock button。 Enter system password：Enter the system password in the pop-up interface，Then click "Unlock"。 Allows installation of software from any source：Select Allow software installation from "Any Source"，and click the lock button in the lower left corner again，lock it。 Go through the above steps，You can now install external software from non-App Store sources on your Mac computer。