Common Windows 11 Problems and How to Fix Them (2026)

Windows 11 is far more stable today than it was at launch, but a handful of problems still show up again and again: updates that refuse to install, a laptop that suddenly feels slow, Wi-Fi that keeps dropping, a printer that goes silent. The good news is that most of them can be fixed at home in a few minutes, without calling a technician or reinstalling everything.

This guide covers the most common Windows 11 issues in 2026, with simple numbered steps for each. Start with the quick-fix table, then jump to the problem you are facing.

First, check which Windows 11 version you have

Press Windows + R, type winver and press Enter. A small window shows your version. Microsoft currently supports these releases for home users:

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• Version 26H2 – the 2026 update, which began rolling out on 29 September 2026 as a small enablement package for PCs on 24H2 or 25H2.
• Version 25H2 – released on 30 September 2025 and still receiving updates.
• Version 24H2 – Home and Pro editions have reached the end of their update period, so move to 25H2 or 26H2 to keep getting security fixes.

Many problems disappear simply by installing the latest cumulative update, so keep this in mind as you go through the fixes below.

Quick-fix summary

Problem	Try this first
Windows Update fails	Free up space, restart, then use Fix problems using Windows Update
PC is slow	Turn off startup apps and check Task Manager
High CPU or disk usage	Find the heavy process in Task Manager
Wi-Fi keeps dropping	Forget the network, then run a Network reset
Bluetooth not working	Remove and re-pair the device, update the driver
Printer not printing	Clear the queue and restart Print Spooler
Start menu or taskbar frozen	Restart Windows Explorer in Task Manager
Blue or black crash screen	Note the stop code, remove the latest update or driver
Battery drains fast	Turn on Energy saver
No sound	Check the output device and install the latest update
Apps crashing, odd errors	Run DISM and SFC

1. Windows Update fails or gets stuck

1. Make sure you have at least 10–20 GB free on the C: drive. Check under Settings > System > Storage.
2. Restart the PC (a proper restart, not shutdown) and try again from Settings > Windows Update.
3. If a recent update broke something, go to Settings > Windows Update > Update history > Uninstall updates and remove it.
4. Still stuck? Open Settings > System > Recovery and, under Fix problems using Windows Update, click Reinstall now. This reinstalls your current Windows version while keeping your apps, files and settings. Keep the laptop plugged in and online.

2. Windows 11 feels slow

1. Open Settings > Apps > Startup and switch off anything you do not need at boot, such as game launchers, cloud apps you rarely use and updaters.
2. Restart and see if boot time improves.
3. Check free storage. A nearly full drive slows everything down.
4. Install pending updates and optional driver updates (see section 5).
5. If you have 8 GB RAM or less, close browser tabs you are not using. Modern browsers are often the biggest memory users.

3. High CPU or 100% disk usage

1. Press Ctrl + Shift + Esc to open Task Manager.
2. On the Processes page, click the CPU or Disk column to sort by usage.
3. If a normal app is at the top, close it with End task and check whether it needs an update.
4. If it is Windows Update or the antivirus scanning, let it finish once. Usage usually drops afterwards.
5. If an unknown process keeps hogging resources, run a full scan in Windows Security.

4. Wi-Fi disconnects or shows no internet

1. Restart your router and the PC. Check if other devices are online, since the issue may be your broadband connection.
2. Forget the network: Settings > Network & internet > Wi-Fi > Manage known networks, select it, click Forget and reconnect.
3. Run the network troubleshooter from Settings > System > Troubleshoot > Other troubleshooters. On newer builds this may open the Get Help app.
4. As a last step, go to Settings > Network & internet > Advanced network settings > Network reset and click Reset now. This reinstalls your adapters and clears saved Wi-Fi passwords, VPN and proxy settings, and the PC restarts within a few minutes.

5. Bluetooth not working

1. Open Settings > Bluetooth & devices and make sure Bluetooth is turned on.
2. Remove the troublesome device, then put it in pairing mode and add it again.
3. Install driver updates from Settings > Windows Update > Advanced options > Optional updates.
4. If nothing appears there, download the latest Bluetooth or wireless driver from your laptop maker’s support page.

6. Printer not printing

1. Go to Settings > Bluetooth & devices > Printers & scanners, select your printer, choose Open print queue and cancel stuck jobs.
2. Press Windows + R, type services.msc, find Print Spooler, right-click it and choose Restart.
3. Run the Printer troubleshooter from Settings > System > Troubleshoot > Other troubleshooters.
4. If it still fails, remove the printer from Printers & scanners and add it again with Add device. For a network printer, you can add it manually using its IP address.

7. Start menu or taskbar not responding

1. Open Task Manager with Ctrl + Shift + Esc.
2. Find Windows Explorer in the Processes list, right-click it and choose Restart. The taskbar will vanish for a second and come back.
3. If it happens repeatedly, install the latest update and run the DISM and SFC repair in section 11.

8. Blue screen (now black screen) crashes

From 2025 onwards, Microsoft replaced the classic blue crash screen with a simpler black one. It no longer shows the sad face or QR code, but it does show the stop code and, often, the driver responsible.

1. Note the stop code and driver name, or take a photo of the screen.
2. If the crashes began after an update, uninstall it from Update history.
3. If a driver is named, update or reinstall it from your PC maker’s website.
4. If Windows will not stay up long enough, go to Settings > System > Recovery > Advanced startup > Restart now and choose Safe Mode from the startup options.

9. Laptop battery drains too fast

1. Open Settings > System > Power & battery.
2. Under Energy saver, set it to switch on at a higher battery level, or turn on Always use energy saver.
3. On the same page, check which apps are using the most battery and close or uninstall heavy background apps.
4. Lower screen brightness and turn off Bluetooth when you are not using it.

10. No sound or USB headset not working

Microsoft has acknowledged a problem on recent versions where some USB audio devices show Code 10, produce no sound or have stuck volume. Fixes are arriving through cumulative updates.

1. Open Settings > System > Sound and confirm the correct output device is selected.
2. Unplug the USB device and plug it into a different port.
3. Install the latest cumulative update from Settings > Windows Update.
4. Use the built-in speakers or a 3.5 mm headset as a stopgap.

11. Apps crash or Windows shows strange errors

Corrupted system files cause all sorts of random problems. Windows has two built-in repair tools.

1. Search for Terminal in the Start menu, right-click it and choose Run as administrator.
2. Type DISM /Online /Cleanup-Image /RestoreHealth and press Enter. Wait for it to reach 100%.
3. Then type sfc /scannow and press Enter.
4. Restart once both finish.

Frequently asked questions

Should I install Windows 11 26H2 right away?

It is a small enablement package, so the upgrade is quick. Microsoft has listed a few known issues, mostly affecting office domain sign-in, virtual desktops and some USB audio devices. Home users can usually update safely, but you can wait a few weeks if your PC is working well.

Will Reinstall now delete my files?

No. The Fix problems using Windows Update option reinstalls your current version of Windows and keeps your apps, files and settings. Still, keep a backup of important data before any repair.

Where did the old troubleshooters go?

Microsoft is retiring the legacy troubleshooters and moving them to the Get Help app. You can still start them from Settings > System > Troubleshoot > Other troubleshooters on most PCs.

Is my PC still safe on version 24H2?

Home and Pro editions of 24H2 no longer receive updates, so upgrade to 25H2 or 26H2 from Settings > Windows Update to stay protected.

Wrapping up

Most Windows 11 problems come down to a missing update, a bad driver or too many apps running in the background. Work through the steps above in order, starting with the simplest, and you will fix the majority of issues without losing any data. If nothing helps, back up your files and use Reinstall now from the Recovery page before considering a full reset.

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