Sometimes there are situations when a user needs to know not only the version, but also the build number of the operating system installed on his Mac. Typically, this information is needed if the device is running beta or when completing an error report sent by Apple.
By following the instructions below, you can easily determine the version running on macOS and its build number.
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Why you need to know the operating system version and build number
This data may be needed when installing software, which, for example, supports some versions of macOS. This information is also important for beta testers who need to check which build of the beta version of the OS is installed on the device. In addition, when filling out a bug report, you must include the macOS version and build number in the form so that Apple can reproduce the problem.
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How to find the version and build number of macOS
1. On your computer desktop, click the Apple () symbol in the menu bar.
2. Select “About this Mac“.
The macOS version is displayed right under the heading “macOS“.
3. Click the version number to find the build number.
Even if the macOS version numbers are the same, the build numbers that are installed on Mac computers may differ. For example, after purchasing a new Mac, users may notice that with the same OS version, the build number may differ from those installed on other computers. This just means that a more recent version of the assembly is installed on the new Macs. If the assembly is already out of date, you can update it using the tab Updates in Mac App Store…