Where to find the update check on Windows, Mac, iPhone, and Android

The place to check for updates depends on what device or program you are using. On a Windows computer, go to Settings, then System, then About — at the bottom you will see "Windows Update settings" with a button to check now. On a Mac, open System Settings (or System Preferences on older versions), click General, then Software Update. On an iPhone, go to Settings, General, Software Update. On Android, open Settings, scroll to About Phone, then System Update.

For individual programs, the update location varies. Most programs have an update option in their main menu — look under Help or Settings. Google Chrome, Firefox, and Edge all check for updates automatically, but you can force a check by opening the menu (three dots or lines), going to Help, and selecting "About [Browser Name]" — it will check when ready and install if needed. Microsoft Office programs check through File > Account > Update Options. Adobe programs typically have Help > Updates.

If you are not sure where to look in a specific program, search the program name plus "how to check for updates" — the official website usually has clear instructions with screenshots.

Key Takeaways

  • Windows updates are found in Settings > System > About, and Mac updates are in System Settings > General > Software Update.
  • Most programs check for updates automatically in the background, but you can force a manual check through their Help or Settings menu.
  • Browsers like Chrome and Firefox show you when an update is available by displaying a colored dot on the menu button.
  • Checking for updates takes two to five minutes and often requires a restart, so plan for that time before you start.

What happens when you check for updates

When you click the update button, your device or program connects to the company's servers and compares the version you have installed to the latest version available. If a newer version exists, the system downloads it — this usually happens in the background while you continue working. The read size varies widely: a Windows update might be 100 megabytes to several gigabytes, while a small program update might be just a few megabytes.

After the read finishes, you will usually see a prompt asking you to restart your device or close the program. Some updates install without restarting, but operating system updates (Windows, Mac, iOS, Android) almost always require a restart to take effect. Plan for 10 to 30 minutes of downtime when you see a restart prompt, because the installation happens during the restart and you cannot use your device during that time.

Automatic updates versus manual checks

Most modern devices and programs turn on automatic updates by default. This means they check for and install updates on a schedule without you doing anything — usually at night or when your device is idle. Automatic updates are the safest option because you get security fixes without having to remember to check manually.

You can usually see whether automatic updates are on and change the schedule if needed. On Windows, go to Settings > System > About > Windows Update settings > Advanced options, where you can choose when updates install. On Mac, go to System Settings > General > Software Update > Automatic Updates and toggle the switches for what you want to happen automatically. On iPhone and Android, automatic updates are on by default for apps through the app store, but operating system updates may require you to start them manually.

If you turn off automatic updates, you take on the responsibility of checking manually every week or two. This is not recommended unless you have a specific reason — for example, if you are running specialized software that breaks when the operating system updates.

Why some updates fail or get stuck

Updates sometimes fail to read or install. The most common reason is not enough storage space — your device needs free space to read and install the update, usually at least as much space as the update file itself. Check how much free space you have: on Windows, right-click your C: drive and select Properties; on Mac, click the Apple menu, About This Mac, Storage; on iPhone, go to Settings > General > iPhone Storage; on Android, go to Settings > Storage.

A slow or interrupted internet connection can also cause updates to fail partway through. If an update fails, restart your device and try again. Most systems will resume the read from where it stopped rather than starting over.

Occasionally an update will get stuck on the restart screen, showing a progress bar that does not move for more than 30 minutes. If this happens, hold the power button for 10 seconds to force a shutdown, then turn the device back on. The update will usually resume or roll back to the previous version.

Checking for updates on older devices

Older devices sometimes cannot install the latest updates because the hardware is too old. A phone from 2015 might not be able to run the current version of Android or iOS, and a computer from 2010 might not support the latest Windows version. When you check for updates on an older device, the system will tell you if you are already on the newest version available for that hardware.

This is a security concern because older versions stop receiving security updates after a certain date. If your device cannot update further, you should plan to replace it within a year or two, especially if you use it for banking, email, or other sensitive tasks. In the meantime, use a password manager, keep your passwords unique, and avoid public WiFi for financial transactions.

Understanding what the version number means

When you check for updates, you will see version numbers like "Windows 11 23H2" or "iOS 17.2.1". These numbers tell you how new the software is. The first number is the major version (Windows 11, iOS 17), which changes when there are large changes to how the software works. The second number is the minor version (23H2, 17.2), which changes when new features are added. The third number, if there is one (17.2.1), is a patch version, which means only bug fixes and security updates.

You do not need to understand the numbering system to use your device safely. What matters is that you check for updates regularly and install them when prompted. The version number is mainly useful if you are troubleshooting a problem and need to tell technical support what version you are running.

How often you should check for updates

If you have automatic updates turned on, you do not need to check manually — the system handles it for you. If you have turned off automatic updates, check at least once a week, or more often if you use your device for work or financial tasks. Security updates come out constantly, and the longer you wait to install them, the longer your device is vulnerable to known problems that hackers can exploit.

For programs you use frequently, checking once a month is reasonable if automatic updates are off. For programs you rarely use, checking before you open them is enough. The exception is web browsers — these should always have automatic updates on, because browsers are the main way hackers reach your computer.

Frequently Asked Questions

Do I have to restart my computer right after an update finishes?

No, but you should restart within a day or two. Some updates take effect when ready, but operating system updates need a restart to fully install. If you keep postponing the restart, you might miss security fixes or experience slow performance. Set a time when you know you will not need your device for 20 minutes and restart then.

What if an update breaks a program I use for work?

This is rare but does happen. If a program stops working after an update, restart your device first — that fixes most problems. If it still does not work, check the program's website or support page to see if there is a known issue and a fix. You can also try uninstalling and reinstalling the program. If nothing works, contact the program's support team with your device type and the version number of both the program and your operating system.

Can I check for updates on my phone while using WiFi instead of cellular data?

Yes, and it is a good idea. WiFi is usually faster and does not count against your data plan. Most phones will read updates over WiFi automatically if you have that setting on. If you are on cellular data and an update is available, the phone will usually ask you to connect to WiFi before downloading.

Why does my device say "update available" but I already checked for updates?

This usually means a new update was released after you last checked. Check again — you might see a newer version now. It can also mean the previous update failed to install completely. Restart your device and check again.

Is it safe to use my device while an update is downloading?

Yes, you can use your device normally while an update downloads in the background. The read happens at low priority so it does not slow down what you are doing. However, do not restart or shut down your device while the read is happening, or the update will fail and you will have to start over.