In Brief (TL;DR)
Having trouble installing software or an app on your Mac? Discover the most common causes and the solutions to fix the error quickly and easily.
From Gatekeeper security settings to incomplete installation files, the causes can vary but are often simple to resolve.
Learn how to change security settings and fix the most common errors in a few simple steps.
The devil is in the details. 👇 Keep reading to discover the critical steps and practical tips to avoid mistakes.
Have you tried to install a new program on your Mac, only to have an error window stop the process? You’re not alone. Many users, regardless of their experience, encounter messages like “the application can’t be opened” or “the installation failed.” This can happen for several reasons, ranging from simple security checks to more complex compatibility issues. Fortunately, most of these problems have a relatively simple solution. Understanding the root cause of the error is the first step to getting your desired software to run correctly on your Apple computer.
The Apple ecosystem is known for its stability and security, but these very features can sometimes be an obstacle. Strict security policies, the transition from Intel processors to Apple Silicon, and the specific needs of certain professional sectors create a software landscape where not all applications are immediately compatible. This article explores the main causes of installation problems on macOS, offering practical solutions and analyzing the context of the European and Italian markets, where tradition and innovation meet, also influencing the technological choices of professionals and companies.

macOS Security Barriers: Gatekeeper
The main guardian of your Mac is a technology called Gatekeeper. Designed by Apple, its function is to ensure that only trusted software runs on the system. When you download an application from the internet, Gatekeeper verifies that it comes from an identified developer certified by Apple and that it does not contain known malicious content. If an app fails this check, macOS blocks it from opening and displays a warning message. This is the most common reason why an application downloaded from outside the Mac App Store might not install.
By default, security settings allow the installation of apps from the Mac App Store and from identified developers. If the software you are trying to install does not fall into these categories, macOS will warn you that it “is from an unidentified developer.” To safely bypass this block for a specific app you trust, you can go to System Settings, then Privacy & Security. Here, you will find an “Open Anyway” option, which will allow you to manually authorize the installation. It’s a protective measure designed to make you think twice before installing potentially unsafe software.
Hardware and Software Compatibility: The Apple Silicon Era
Another key reason a software might not install relates to compatibility, both with the operating system and the hardware. With the transition from Intel processors to Apple Silicon chips (M1, M2, M3), not all programs were immediately updated. Applications built for the Intel architecture can run on new Macs thanks to Rosetta 2, a translation tool that works in the background. However, for maximum performance and stability, it is preferable to use “native” or “universal” software, meaning it’s compiled to run on both architectures.
Before downloading an application, it’s a good practice to check its compatibility with your macOS version and your Mac’s processor. This information is usually available on the developer’s official website. Installing an outdated or incompatible version of the software can lead to unexpected errors or a complete installation failure. If an app isn’t working correctly, one of the first things to check is to ensure you have both the operating system and the application itself updated to the latest available version. Sometimes, a simple update can resolve issues with incompatible software on Mac.
The Italian and European Context: Between Tradition and Innovation
In the Italian and European markets, software choice is often influenced by a mix of established habits and a drive for innovation. In traditional sectors like public administration, technical design (CAD), or certain management fields, software solutions developed primarily for Windows have predominated for decades. Companies like Zucchetti, a leader in Italy for business management software, offer solutions that have historically been more widespread in a Windows environment. This creates a sort of “digital legacy” that can make it difficult for professionals in these sectors to switch completely to Mac, as some specific programs may not have an equally valid native alternative.
Although macOS market share is growing in Europe, Windows maintains a dominant position. This historical predominance has led many niche software developers, especially those tied to local regulations or market practices, to focus their efforts on the Windows platform. Consequently, an Italian professional might find themselves unable to install essential software for their work simply because a Mac version does not exist. While the situation is changing with the growing popularity of Macs, this software legacy remains a relevant factor.
Solving Common Installation Problems
When an installation fails, error messages can vary, such as “file is damaged” or “insufficient space.” Before attempting complex procedures, there are some basic steps to follow. A simple reboot of your Mac can resolve temporary issues. It’s also crucial to verify you have a stable internet connection, especially if the installer needs to download additional components from Apple’s servers. Another common cause is a lack of sufficient storage space on the startup disk; make sure you have enough free gigabytes before you begin.
If the basic steps don’t work, there might be a problem with the installation file itself. A downloaded installer could be corrupted. The solution is to delete it, empty the Trash, and download it again, preferably from the developer’s official website or the Mac App Store. In rarer cases, the error could be due to startup disk problems. Using Disk Utility from macOS Recovery to run a check and repair the disk can resolve these conflicts and allow the installation to proceed correctly. If your Mac is slow or showing other issues, it could be a sign of broader software conflicts.
When Software is Windows-Only: The Alternatives
What do you do when an essential application doesn’t exist for macOS? The most common solution is virtualization. Programs like Parallels Desktop, VMware Fusion, or the free VirtualBox allow you to create a “virtual machine” on your Mac, inside which you can install and use the Windows operating system as if it were just another application. This option, also authorized by Microsoft for Macs with Apple Silicon chips, lets you run Windows software without having to restart your computer. It’s the ideal choice for those who need to access specific programs while retaining the benefits of the Mac ecosystem.
Another option is Boot Camp, a utility included by default on Intel-based Macs, which allows you to partition the hard drive to install a native version of Windows. Unlike virtualization, with Boot Camp you choose which operating system to boot at startup, ensuring maximum performance for Windows software. However, Boot Camp is not available on new Macs with Apple Silicon chips (M1, M2, M3). For these models, in addition to virtualization, there are alternatives like CrossOver, which translates Windows API calls into macOS commands, allowing some Windows apps to run without installing the entire operating system. If you encounter hardware issues, such as an unreadable hard drive, it’s important to resolve them before proceeding with these complex installations.
Conclusion

Facing an installation error on a Mac can seem frustrating, but in most cases, the solution is within reach. Whether it’s bypassing Gatekeeper’s protections for a trusted app, checking compatibility with new Apple Silicon processors, or ensuring you have enough space and intact installation files, the troubleshooting steps are logical and accessible. Understanding these dynamics allows you to make the most of the power and security of the macOS ecosystem without giving up the software you need.
In the specific Italian and European context, where the legacy of Windows-developed software is still strong in some professional sectors, tools like virtualization offer an effective bridge between two worlds. The balance between tradition, represented by established software, and innovation, embodied by Apple’s hardware and operating system, becomes manageable. This way, Mac users can enjoy a smooth and secure user experience, overcoming compatibility hurdles and successfully installing the applications they need for work or passion.
Frequently Asked Questions

This is a security message from macOS generated by the Gatekeeper feature, which by default restricts installation to software from the App Store or Apple-certified developers. If you trust the software’s source, you can manually authorize the installation. Go to ‘System Settings,’ select ‘Privacy & Security,’ and in the ‘Security’ section, you’ll find an option to ‘Open Anyway’ for the blocked application. This action is recommended only for software you know to be trustworthy.
This error can have several causes, such as an incomplete download, a problem during extraction from a compressed file, or a conflict with security settings. The first thing to do is try downloading the file again, preferably from the developer’s official website. If the problem persists, a common solution is to right-click the app’s icon, select ‘Open,’ and confirm your intention to open it. In more complex cases, you might need to change security settings via the Terminal, but this is a procedure reserved for advanced users.
Mac software downloaded from the internet is often distributed as ‘.dmg’ files. To install them, double-click the .dmg file to ‘mount’ it: an icon resembling an external disk will appear on your Desktop. Open it, and in most cases, you’ll find the application icon to drag into your Mac’s ‘Applications’ folder. Once the copy is complete, you can ‘eject’ the virtual disk and launch the program from the Applications folder or Launchpad.
Every software requires a minimum operating system (macOS) version to function correctly. Over time, developers stop supporting older versions of macOS to focus on the latest ones. If your Mac is too old to be updated to a macOS version compatible with the new software, you won’t be able to install it. To check compatibility, look at the system requirements on the developer’s website and compare them with the macOS version installed on your computer, which you can see in the Apple menu u0026gt; ‘About This Mac’.
Safety depends entirely on the source. Downloading a program from the official website of a well-known and trusted developer (e.g., Adobe, Microsoft, VLC) is generally safe. Conversely, getting software from unofficial download sites, aggregators, or via peer-to-peer networks (like torrents) carries a high risk, as the installation files could contain malware, adware, or other unwanted software. The safest choice is always to prioritize the Mac App Store or the manufacturer’s official website.

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