Installer can't be opened because Apple cannot check for malicious software macOS Catalina

Catalina: can’t be opened because Apple cannot check for malicious software

Apple’s new update for the macOS, Catalina, adds several security features to OS. One major change is the notarization of apps. Under this program, developers need to submit their apps for a verification process, before they could publish it on the macOS platform. Apps that don’t get approval from Apple are now blocked from direct execution- they display a message “can’t be opened because Apple cannot check it for malicious software.” It is beneficial for those who are concerned about the security of their Mac. But it can be annoying at times when the system blocks you from opening apps like Whatsapp, Brave Browser, Spotify, CCleaner, etc.

Install macOS Catalina on High-Sierra using Virtualbox

Install and run macOS Catalina on High Sierra using VirtualBox

Apple usually gives software upgrades for the Mac hardware for a long time. However, the MacOS Catalina has some unique hardware requirements; it can run only on Apple devices built after 2012. People who can’t afford a new Mac for the cost and many other reasons are now left with the option to continue using High Sierra. If you are one of them, we have already have a post on installing Catalina on the older Macs when it reports that it can’t be installed. That method requires you to install macOS on a separate partition, and you will get the option to boot into Catalina from startup-screen. Here is an alternative way to install macOS Catalina 10.15 on High Sierra Mac using Virtualbox.

Share screen Skype mobile app

Share screen on Skype mobile app [Android & iPhone]

It is possible to share screen on Skype on the desktop version for Windows and macOS from the last few years. Recently Skype expanded this setting to Skype for mobile. With Skype 8 mobile app, you can stream the display of your Android device or iPhone or iPad to your contacts. All you need is to open the Play Store or App store and download the upgrade for your Skype installation and make a call.

create macOS USB installer Windows

Make macOS USB installer on Windows 11 [Catalina & others]

A USB installer can significantly save time when installing macOS on multiple Macs without an internet connection. Additionally, it serves as a useful tool for system recovery after a startup failure. Creating a macOS USB disk from the full installer downloaded from the App Store is straightforward, as Apple provides clear instructions for this purpose. However, people only utilise this feature when encountering issues with their Mac, particularly when their system fails to boot up. This article will explore various methods to create a bootable macOS USB for High Sierra 10.13, Catalina, Monetary 12.4, Ventura 13.4 and other macOS versions on Windows PCs and Macs.

Download macOS installer [DMG]

Download MacOS full offline installer & DMG [direct link]

Get direct links to download macOS from Apple in APP, IPSW & PKG formats for all versions from OS X Lion up to Sonoma. A macOS full installer helps you build a bootable USB for semi-offline reinstallation and recovery. We also explain about downloading or making macOS DMG version.

macOS Sequoia Icon

Download macOS Sequoia

Direct links to download full offline installers for macOS Sequoia version 15.2, available in PKG and IPSW formats.

  • Version: 15.2
  • Build: 24C101
  • Release Date: 12/11
  • Size: 14.2 GB (PKG), 15.3 GB (IPSW)
  • File Formats: PKG, IPSW
  • Platform: macOS

The Mac app store is the most avowed and secure channel to download macOS installers and updates. It works well if you have a stable and fast network connection. However, downloading from the App Store doesn’t don’t work in certain circumstances, especially when your account is experiencing issues. Occasionally Macs also get into internal software and hardware problems and may end up in boot loops. So if you are wondering how to get a macOS offline installer in the situations mentioned above, check the solutions given below. This article explores different ways to download the macOS full installer (APP, DMG & PKG) directly from Apple, all through legal channels.