Fix macOS 15.4.1 Sequoia Installation Stuck & Update Failed Error

Is your Mac running macOS 15.4 giving you trouble, like getting stuck on “Install & Update Failed”? You’re not alone! Every year, Apple rolls out major macOS updates that come with helpful bug fixes and improvements, but many users find the update process a bit tricky. Usually, upgrading is as easy as heading to the Software Update section while connected to Wi-Fi. Some common hiccups include failed updates, installations that seem to hang, or the Apple logo just endlessly spinning. Just a heads up: major upgrades tend to take a bit longer to install than smaller updates. We’re here to help you get through it!

Before that, Get Ready with

• Good Internet connection: Near to 12 Gigabytes of Software Update first download on your Mac, So Proper Internet connection will save time. Also, in between your Mac, verify any time while you upgrade your System. So a constant connection is required. Otherwise, the process will terminate itself. You can use Ethernet cable connection if WiFi Dropping out during MacOS Sequoia Update. Turn off WiFi and Plug Ethernet cable, that’s it.
• Use Proper Mac Login Password or Apple ID password: Most of the time, Mac asks for the system password, but sometimes you need to verify with the Apple ID password. Read the message first and enter a valid password.
• Efficient Battery on MacBook:  Don’t start the installation if you don’t have any power source around you or a Charging cable. Prepare by downloading the New macOS file.
• Memory Space: Keep At least 10 Gigabytes of Free space. Find the Solution Here, MacOS Download Stuck or Stop/Waiting before installation starts.

macOS Sequoia Update Stuck While Installing & Failed Update

Fix 1: Update Stuck on Installing

The macOS Software Update has downloaded on your Mac, but the installation must be completed after you click “Update Now.” If your Mac or MacBook is stuck on the Apple logo with a loading bar, take action to resolve the issue.

Now the Question is, have you waited for more or not?

In my opinion, you should wait for a longer period. Becuase installation will take up to 45 minutes, depending on your Mac model. I mean, process and Speed performance. But if you are waiting for a long time, like 2 hours, then restart your Mac and check again.

Press and Hold on the Power button Until your Screen goes black. and you will listen to the startup sound from Mac.

Fix 2: Restart your Mac

People don’t like to restart the system, because too much software and apps are running. But it’s tricky solutions that fix all types of software bugs and connection issues as well. Somewhere software glitch and file system waiting for a reboot or restart system. becuase of it’s necessary. Go with the normal turn off Mac and Turn it on again.

1. Go to Apple logo on Mac.
2. Next, click on the Restart option.
3. Go with successfully restart your mac and Wait for that time.

Or if you screen Black,

Press and Hold on the Power button of your Mac for 7 to 10 seconds, until your Mac plays the Startup sound.

Now Go with the Traditional ways to download and install new Software MacOS that apple recommends on Released time of release. here you are looking for Update MacOS Sequoia. Follow the below steps and Found helpful.

1. To download the latest macOS update from App Store, Open App Store on Mac.
2. Type MacOS Sequoia, Just like Mac app search and download.
3. Now, Tap on Download button, Enter Valid Apple ID and Password if App Store Ask.

Check the installation, and if still, mac stuck on loading screen then Remove the macOS setup file from the applications folder and Do Download and install MacOS Update again.

Fix 3: Re-Download and Install MacOS

The corrupted MacOS Setup file will not install on your Mac with multiple attempts. In this situation, we have to delete the old downloaded files from Mac manually. and Re-Download a new copy of Software Update and install it. here are the steps to Find & Delete MacOS 12 file and Re-Download from Mac system Preferences.

Go to the Applications Folder in Finder, and Find out MacOS setup File. Select it and Move to the bin.

Once again check for New Software Update,

1. Go to the Apple Logo from top Mac menu > System Preferences.
2. Now, System Preferences > Download software update. and Update your Mac.

Also, Checkout another handy fix for macOS stuck while installing..with a Black screen, With Loading Bar, With Apple logo Loading bar.

Disable FileVault

Start Mac in Safe Mode

Reinstall Mac in Recovery Mode [Without Erase data, Workable]

Fix 4: Resetting PRAM on MacBook, iMac, MacMini is a pretty Easy Fix

Note: Skip this Step for M1 Mac User, Only Restart your Mac

MacBook or Other macs has two types of TAM, one is PRAM and the second is VRAM. Both RAM store some information to quickly access during restart, also we can reset this information the same way. Let’s do it. because most of the people spotted are helpful in these tricks.

First Shutdown your Mac, To turn off Long press and hold on to the power button.

Now Press the Power button start, After that As quickly as possible press Option + Command + P + R Keyboard keys at once. continuously press and hold those keys until you hear the startup sound for the second time.

Now, wait Until you see the Apple logo on the screen, after that continue with the update and install New MacOS Sequoia Update.

Fix 5: Force Quite App or Uninstall App that’s Buggy

Too many apps running on your Mac and Backgroud processes as well. I recommend to turn off as possible. To check out all the running apps/programs on your Mac. Open Activity Monitor and check the RAM consumption and the Not Responding app. Follow the steps below to quickly find Apps that are not in use and Remove Buggy apps.

• Open Spotlight search. Use Command + Space key. and type Activity Monitor on your search bar.
• Next, Under the CPU Tab, Find all running apps with a name. Select the App name, and click on the close mark to quit app and process as well.
• That’s it.

Fix 6: Check Internet Connection: Turn off/Turn on WiFi

Installation is required continuous wifi signal and internet connectivity. if you know that, your internet has WiFi Dropping issues, try another WiFi or Use Ethernet Cable. Sometimes internet WiFi status is showing connected but no internet access from that. That’s misleading, giving the result of installation failed and stuck on Mac.

Use your Friend’s internet connection if there is a problem with the (ISP) Internet service provider.

Fix 7: Manage Storage On Mac, Free Up Quick as Possible

In recent macOS, Apple is giving amazing tools that take care of all the data and suggest you delete the app, Large Files, and Folders so we can quickly free up storage any time. Some Third-Party Mac Cleaner software also yields impressive results.

1. Go to the Apple logo on Mac.
2. Select About this mac under the Menu options.
3. Now, Click on Manage Tab and Review all recommended settings for free up storage.

Free up storage is always not work. becuase this is the part of solutions. People who have actually a problem with Storage can fix using this. But some OS Bug issues with can solve in Safe Mode only. checkout the next solution for Update MacOS Sequoia in Safe mode.

Fix 8: Update in Safe Mode

try to update macOS Sequoia on Mac is Safe more. Safe mode help to fix the issues with the startup disk. This mode is also called a safe boot. Safe mode only loads Kernal Extension when you start mac, also This mode repair directory issues. Safe mode Delete Cache Files, Font Cache, and Kernel cache as well. here I define how to put your Mac in Safe mode and Update MacOS Sequoia after that Exit your Mac from Safe mode.

1. First Sign out or Turn off Mac using the Power button.
2. Now press the Power button to start, at the same time also press and hold the shift key.
3. Now on Login screen of mac, you will see Watermark text, Safe Mode at the top right corner of the screen.
4. Do the installation process as of explained above steps. Once you install macOS successfully, Restart your Mac and your Mac will exit from safe more.

Fix 7: Erase Drive and install New MacOS [Clean install]

Fix 8: Forgot Apple ID password used on Mac

• Take Mac Backup To External Drive

Fix 9: Clean installation of macOS Using Flash Drive or Reinstall

First is Create Bootable Drive and install it [Hard Ways]

Performing a clean installation of macOS on a Mac can be challenging for inexperienced users, but it is doable. To complete this process, you will need a USB flash drive, and you’ll need to run a command to erase the drive and create a bootable USB drive for macOS, as outlined by 9to5Mac. Follow this step-by-step guide carefully to successfully install the new macOS.

Second is Reinstall a New uprooted MacOS on Mac [Drive Easy Method]

I assume that MacOS Sequoia is installed and running on Mac. Now We have alternate options for install the supported latest MacOS on Mac. First, your Mac has connected an Internet connection. after that Press and Hold the power button until the screen is off. Now Press the power button once, as quick as possible Press and Hold the Command + R key from the keyboard at once.

> First Option is Restore From Time Machine Backup [No Data lose]: Hold those keys until you see Disk Utilities on screen. Here are two options first is Restore from Time Machine Backup. [If you have taken the backup in time machine then you can restore it here using this option, and no data loss].

> the Second option is to Reinstall MacOS [No Data lose]: This will install a new copy of Mac OS. Go with this and Select the Hard Drive that we want to install.

> Third Option is Erase Disk & Reinstall MacOS [Erase Drive and install New Copy]: If you have a serious problem with drive data and Unsupported Apps that are installed on Mac. But can’t remove it because Mac doesn’t turn on. So First Go with the Disk Utilities, And Select MacOS drive and Erase it.

now close the Disk utility window and You will see the macOS Utilities window, Go with the Reinstall MacOS option.

Apple Guide to Restore from Time Machine on Mac

Hope you successfully installed the new macOS on your Mac Fast and Easily. Fix out all the errors and troubleshooting tips.