Mac: Program XYZ cannot be opened because it was not downloaded from the App Store.

If the Mac cannot or does not want to open a program ...

I assume that most Mac users already know how to bypass this message in macOS, but since a few beginners ask me every now and then, I would like to briefly address the topic with this guide. In this post I would like to explain to you what to do if the Mac does not want to open or install a program. As a rule, the so-called "Gatekeeper", which is a security feature of macOS and prevents the execution of programs that have been downloaded from the Internet.

The macOS error message "Program XYZ cannot be opened because it was not downloaded from the App Store." can be easily avoided.

The macOS error message "Program XYZ cannot be opened because it was not downloaded from the App Store." can be easily avoided.

If you want to start such a program or an installer with the usual double-click, a Mac with the Gatekeeper activated by default acknowledges this action with an error that looks like this:

"Program XYZ" cannot be opened because it was not downloaded from the App Store. Your security settings only allow the installation of apps from the App Store.

The quick solution: right mouse button> "Open"

To solve the matter quickly, you can click away the error message and right-click on the corresponding file. The context menu from which you select the "Open" item now appears.

With the right mouse button you get to the context menu to open the program without gatekeeper intervention.

With the right mouse button you get to the context menu to open the program without gatekeeper intervention.

In my case, I wanted to start an installation package that installs the software for a Dymo label printer. If you have selected "Open" in the context menu, you will be asked again with a warning window whether you really want to run the software.

The program is finally started with the continue button.

The program is finally started with the continue button.

If you click on "Continue", the corresponding program will be executed. In the case of an installer, you will be asked for the administrator password a few times later. The installer needs this to install the corresponding program in the program folder. Without the appropriate rights, no program may access it.

If you have started an installer that wants to copy a program into the program folder, you will be asked for the admin password.

If you have started an installer that wants to copy a program into the program folder, you will be asked for the admin password.

The long-term solution: switch off gatekeepers

If you are generally annoyed by this security function and know what you are doing, you can turn to it and permanently deactivate the gatekeeper function via the system settings of macOS or at least set it a little less rigorously.

I explain how this is done in detail in this article. However, you should be aware that completely disabling the gatekeeper function is a major interference with the security of macOS. For this reason, I personally prefer using the right mouse button.

-

Did you like the article and did the instructions on the blog help you? Then I would be happy if you the blog via a Steady Membership or at Patreon would support.

2 comments

  1. Mike Genserowski says:

    I often get the error message with attachments to mails: Finder error message 10673. However, I can't find any text about it. I'll try right-clicking next time.
    I'm an Apple newbie and I'm running macOS Monterey.

    • Jen Kleinholz says:

      Hello Mike! Have a look under System Settings > General to see whether a browser that is also on the system is selected as the default web browser. If in doubt, set "Safari". If it wasn't, then unfortunately I have no idea what the problem could be. :(

Leave a Comment

Your e-mail address will not be published.