Mac Won't Update: Troubleshooting Tips to Solve the Problem

Posted By Volodymyr Chubei | 04 Oct 2025

If your Mac stops updating, it doesn't always mean there's a serious problem. In fact, there are a number of reasons why system updates may be unavailable, interrupted, or not run at all.

In this article, we'll look at the main reasons why your Mac won't update and offer clear solutions to the problem. This article will be useful for both experienced users and those who have encountered this situation for the first time.

Why Won't My Mac Update

Failure to update macOS can be caused by either technical limitations of the device or software glitches. Below is a list of common reasons why your Mac won't download, find, or install updates.

The device does not support the new version of macOS. Apple regularly discontinues support for older models. Even if your Mac works properly, it may not be compatible with the latest updates. For example, macOS Ventura isn't supported on models released before 2017. To check if the new system is suitable for your model, you need to go to Apple's official website and check the list of supported devices.
Not enough free disk space. MacOS updates can take up approximately from 12GB to 25GB. In addition, the system requires additional space for temporary installation files. If you don't have enough free disk space, you won't be able to download or install an update. Check the available storage in About this Mac → Storage.
Unstable Internet connection. If your Mac Wi-Fi signal is weak, drops out frequently, or you use a public network with traffic limits, it may cause a failure while downloading or checking for updates.
The App Store or system updater fails. Sometimes the App Store or macOS Update Service cannot communicate properly with Apple's servers. This can be due to temporary problems on Apple's side, incorrect DNS settings, or the update system cache.
The date and time are not set correctly. If you set the date and time on your Mac incorrectly (for example, manually and incorrectly), the system may block the access to update servers. This is for security reasons to prevent attacks or certificate manipulation.
Problems with your Apple ID account. If you are not logged in to your Apple ID, or if there are authentication problems, the system may not allow you to download or install updates. There may also be restrictions related to the Screen Time feature or corporate profiles if the device is used as part of MDM.
Antivirus or third-party firewalls block the access to Apple servers. Some network filters or third-party antivirus solutions may block IP addresses or protocols required for macOS updates. This can be expressed as a complete lack of response to checking for updates, or as a failed download.
System errors or corrupt macOS components. Corrupt system files, especially in the Software Update section, may prevent you from installing a new version of macOS. This can happen if a previous installation completes incorrectly or as a result of disk malfunctions.

If you've encountered one of these problems, you shouldn't panic. Next, we'll walk you through the step-by-step guide on how to restore the ability to update macOS and get your system back to smooth operation.

Also: macOS 26 Tahoe Release Date: What We Know So Far

What to Do If Your Mac Won't Update

If your Mac doesn’t install updates, don't rush into drastic measures. Sometimes the problem can be solved with simple steps that don't require technical knowledge. Here are five workable solutions to get you started.

1. Complete reboot and check the Internet connection

Sometimes all you need to do is simply restart the system. Press and hold the power button to turn off your Mac completely, and then turn it back on. This resets any active processes that may have been interfering with the update installation.

After rebooting, connect to a reliable Wi-Fi network. Ideally this is a home or office network with no restrictions, filters, proxy servers or VPNs. Make sure the internet is stable: go to any website via Safari, check the connection speed or try to upgrade via another Wi-Fi if any is available.

2. Time and time zone synchronization

MacOS relies on accurate system data — and a timing glitch can disrupt the certificates, causing the installation to “crash”. This is especially true if the device hasn't been turned on for a long time or there's been a factory reset.

Open “System Settings” → “General” → “Date and Time”. Make sure that the option of automatic time synchronization via the Internet is enabled. If it is disabled, enable it manually and then select the correct time zone. After that, make sure to restart your Mac.

3. Clearing memory: check if there is enough space

Upgrading macOS requires not only downloading the file, but also deploying it, temporarily saving installation packages and backups. Normally, 15 to 25 GB of free space is required.

To see how much is left:

Click → "About this Mac" → "Storage";
Then click "Manage."

Delete everything you haven't used in a long time: old .dmg files, duplicate photos, apps you don't use. Don't forget to empty your recycle bin. . For a quick space analysis, you can use macOS' built-in recommendations to learn what's safe to delete.

Also: What to Do If Your MacBook Says 'Your System Has Run Out of Application Memory'

4. Installing updates in Safe Mode

Sometimes your Mac stops updating or hangs when it starts up. To find out what's wrong, start by booting into Safe Mode. This is a special mode that runs your system without background processes or extensions. It helps you clear cache, check the file system, and resolve third-party conflicts.

For Intel-based devices: turn on the device and immediately hold down the Shift key until the login window appears. This is the Safe Mode startup.
For devices with M1/M2 chip: Press the power button until the options screen appears. Select the boot disk, then hold Shift and press "Continue in Safe Mode".

After downloading, open Settings → Software Update and check for updates. If the installation starts - it means that the problem was in the system cache or a conflicting process.

5. Resetting NVRAM and Power Controller (SMC)

NVRAM is a non-volatile memory that stores system settings such as volume, boot order, disk selection, and display settings. Sometimes a failure of NVRAM can prevent updates from being installed.

To reset NVRAM on a Mac with Intel:

Turn off the device completely.
When powering on, press and hold Option + Command + P + R simultaneously.
Hold for 20 seconds. Your Mac will reboot twice - this is normal.

SMC (System Management Controller) is responsible for managing power, sleeping mode, charging, ventilation. If you have trouble starting up, heating up, or freezing when updating, try resetting it as well. The reset procedure depends on the model (for example, MacBooks with non-removable battery and MacBooks with T2 chip reset differently), so it's better to use Apple's official instructions.

6. Check your Apple ID and iCloud login

Sometimes you cannot update your system because of problems with your Apple account. If there is a synchronization failure, subscription conflicts, or authorization errors, the system may "stall" the installation process.

Go to System Setting → Apple ID. Make sure you are logged in to your account, the system does not require login confirmation and does not display any warnings. If anything seems suspicious - log out of your Apple ID and log in again. This resets a number of hidden system glitches.

7. Delete management profiles (MDM)

If your Mac was previously used by a school or company, it may have an MDM profile, a remote management tool, installed on it. These profiles can restrict you from installing updates, changing security settings, or even accessing macOS Recovery.

Check for such profiles: System Settings → Profiles. If you see something like "Remote Management" or "Configuration Profile" and you're not sure where it comes from, it's better to delete it. But be sure to create a backup before doing so: in some cases, the device may ask for an administrator password, which you may not have.

8. Use the Terminal to troubleshoot updates

In Macs, macOS supports managing updates via the command line - this can be useful if things are visually “hung” and you can see more through the terminal.

Open the Terminal application (you can find it via Spotlight or in your Utilities folder) and type: softwareupdate --list

If the terminal shows a list of available updates, then the connection works and the problem may be at the interface level. If the response is empty, you should check your network settings and restart your Mac. You can also try the softwareupdate --install --all command - it will initiate the installation directly.

9. Restore via macOS Recovery

If at startup you see a folder with a question mark or the device does not boot at all, the boot volume is probably corrupted. In this case, the built-in recovery mode will help.

On Intel models: turn on your Mac and immediately press Command + R until the Apple logo or recovery window appears.
On Apple Silicon (M1/M2): Hold down the power button again until the menu appears. Select Reinstall macOS.

The system will load the latest compatible version of the OS. Your files and applications will remain in place if no formatting has taken place: the upgrade runs on top of the existing system.

If the internal drive does not show up, open Disk Utility (from the same menu), select the drive and click “First Aid” — this will check and try to fix file system errors.

10. Clean installation of the system from a bootable flash drive

If nothing helps, the most reliable but “hard” option that remains is to completely reinstall the system from scratch.

What needs to be done:

Download the macOS installer from the App Store or Apple's website.
Connect a USB memory device with a capacity of at least 16 GB.
Create a bootable disk through the terminal using the createinstallmedia command.
Restart your Mac and hold down the Option key at startup.
Select the flash drive as the boot source.
Go to Disk Utility, format the primary disk.
Install a clean macOS.

Important: All data on the disk will be deleted. Before installing, create a Time Machine backup or save everything you need to an external disk.

If an update doesn't solve the problem, it might be a hardware issue. At Techtoro.io, you'll find genuine parts for every generation of Mac: batteries, SSDs, keyboards, cables, matrices, and more.

Used MacBooks are also available in excellent condition — inspected, tested and with warranty. All these are at a price below market value. Regular discounts and promotions allow you not to overpay and get quality equipment or spare parts with fast delivery.

Don't delay: sometimes it's easier to replace a component than to spend hours looking for solutions.

FAQ

1. How do I force a Mac to update?

Open Terminal and enter the command softwareupdate --install --all, or try installing the update through Safe Mode or Recovery Mode.

2. Why does my Mac keep failing to update?

It could be due to lack of memory, network limitations, Apple ID failures, or an MDM profile blocking the installation.

3. Is your Mac too old to update?

If your model is older than 7-8 years, it may no longer be supported. Check your model's compatibility with the latest version of macOS on the official Apple website.

4. Why does my Mac never update?

The problem most likely lies in system conflicts, from corrupted files to incorrect time settings. Step-by-step diagnostics can usually help to resolve the failure.

ABOUT THE AUTHOR

Volodymyr Chubei
Computer Repair Specialist at TechToro.io

Volodymyr was born in Ukraine and has found his passion for electronics from his childhood. At the age of 13, he was capable of soldering some basic elements of a logic board and today he is one of the co-founders of TechToro.io