![]() Step 1: On Mac, click on ‘Apple’ menu at top of window and select ‘System Preferences’ In such case, you can un-enroll from BETA version of MacOS in order to fix the error. Make sure your MacOS is not enrolled in MacOS BETA version updates. Method 4: Check if MacOS is not enrolled in BETA UpdatesĪnother possible reason behind this issue can be BETA version of MacOS you have enrolled. Once done, please check if you can download/install MacOS update in Mac computer without any issue. ![]() You can also perform power cycle your router and Mac computer both in order to fix communication issue with your Mac computer and router. You can fix internet connection issue by restarting/resetting networking equipments like router, modem or others. To check internet connection working or not, you can open your browser and try visiting some WebPages and this way, you can check your internet connection speed also. You should make sure that there is no issue with your internet connection. Issue with your network/internet connection could be another possible reason behind this error. After system restart, retry downloading/installing MacOS update and check if the error is resolved. Restarting Mac computer will resolve any temporary glitch in Mac and some software related issues. Sometimes, this error can be occurred due to some temporary glitch in your Mac computer. If the page shows Apple Server is unavailable at the moment for some reasons, then you will need to wait until the Apple’s servers are available for you. To check Apple Server Status, you need to open your browser and visit ‘Apple System Status’ page or ‘’ page and check if Apple Server is available to you. ![]() ![]() How to fix MacOS installation failed an error occurred? Method 1: Check Apple Server Statusīefore troubleshooting the error, you should at first check if Apple Server is active at this moment or not because you can’t get the update if there is some problem with Apple’s Server. In such case, you can wait for few hours or until the Apple’s server is available to you if you want to download/install MacOS update without any error. This error can also be occurred if Apple’s server is currently under maintenance or unavailable for some reasons, or Apple’s server may be overloaded due to number of users trying to download/install new MacOS update. If any, fix network/internet problem and then retry updating or downloading/installing MacOS software update and check if it works for you. You should make sure you have stable internet connection and speed, and there is no issue with internet connection. The possible reason behind this error can be software conflict issues, server issues, internet connection issues, issues with MacOS update installation files and components, malware or viruses infection in Mac and other reasons. This MacOS installation failed error prevents you from installing MacOS software update in computer. This issue is occurred with most of MacOS versions including MacOS Big Sur, Catalina, and MacOS Mojave. Several users reported about this MacOS software update installation error and explained that this error is appeared in Software Update window of System Preference panel when MacOS update failed to install. “Installation failed, an error occurred while installing the selected updates” This error indicates that MacOS update couldn’t complete for some reasons. This error is usually appeared when you try to download and install MacOS update in your Mac computer. ‘Installation failed an error occurred’ error on Mac: It is common MacOS issue considered as MacOS software update error. Here, you will be guided with easy steps/methods to resolve the issue. If you are facing ‘ MacOS installation failed an error occurred’ error while trying to download/install MacOS software updates in your Mac computer, then you are in right place for the solution. What is ‘Installation failed an error occurred’ on MacOS?
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