The /r/feedthebeast subreddit is not affiliated or associated with the Feed the Beast company Rules and Guidelines This subreddit was originally created for discussion around the FTB launcher and its modpacks but has since grown to encompass all aspects of modding the Java edition of Minecraft The subreddit for all things related to Modded Minecraft for Minecraft Java Edition Also, check out our other guides, such as How to fix the Minecraft RemoteConnect erroror How to fix Minecraft ‘Exit Code: 1’ on Windows.Join our Discord Server! r/FeedTheBeast r/FeedTheBeastServers Welcome to /r/FeedTheBeast! About That’s everything covered on how to fix the Minecraft launcher “Install Failed (0xUnknownAppInstall)” error.
Finally, follow the prompt instructions to start the installation process. Then click the ‘Run as administrator’ option from the menu. Right-click on the Minecraft installer file to open the context menu. To run the Minecraft installer as an administrator, follow these steps: 
Running the installer as an administrator can solve this problem and allow you to install the launcher without any errors. Sometimes, this error can occur if you don’t have enough permissions to install the new Minecraft launcher on your PC. Click the ‘Download & Install’ button next to each update and restart your PC if prompted.Then click the ‘Check for Updates’ button to view all the pending updates.
Firstly type ‘Update’ in the Start menu Search box and open the Windows Update settings. Updating your Windows desktop can fix some compatibility issues and improve the performance of your PC, and you can do it by following these steps: Run the installer and follow the prompt instructions to complete the setup.Īnother possible cause of the Minecraft installation failed error is that your Windows is outdated or missing some important updates. Now reinstall the launcher from the Minecraft official website. Wait for the uninstallation process to finish. Find ‘Minecraft’ in the list of apps and click on it. Firstly, open the Start menu and type ‘Apps & features’ in the Search box, and open it. Hence, to uninstall Minecraft, follow these steps: This will ensure that you have the latest version of the app and that it is compatible with the new launcher. One of the simplest ways to fix the 0xUnknownAppInstall error is to uninstall and reinstall Minecraft on your PC.
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