Why Wuauserv Causes High CPU Usage and How to Fix It:
Many Windows system processes are considered necessary to run a secure and fully functioning PC. Wuauserv is arguably one of the most important – this service (also known as the Windows Update service) keeps your PC up-to-date with the latest feature releases and bug fixes.
Just like that ntoskrnl.exe And for other important system services, VuServe requires priority access to your system resources from time to time. Unfortunately, this means that you will sometimes see wuauserv reports high CPU usage. If this is happening to you and you are looking for a solution, here is what you need to do.
Why does Wuauserv cause high CPU usage?
As the name suggests, the Windows Update Service (or Vuserve) is responsible for ensuring that your Windows PC is up-to-date. Immediate security and bug fixes, as well as new features and system enhancements, are made available through the Windows Update system.
Windows will usually handle these updates without your notice, although you may need it Fix stuck updates Now and then. If wuauserv-related processes (such as wuauclt.exe) report high CPU usage for a sustained period in Task Manager, however, this may indicate problems with your PC that you will need to troubleshoot further.
For most people, this can point to an update that is currently being installed — all you have to do is wait for that update. It can also indicate difficulties Update not installing Correctly, but you may also have corrupt system files that are causing the services like wuauserv to stop working properly.
If so, you will need to check and repair your system files or, in the worst case, consider Reset windows 10 to factory settings. Of course, if your PC is struggling, you may need to consider Upgrade your pc To give it more processing power.
Check the status of your windows update
The root cause of high CPU usage is — after all, it is not high for no reason. If wuauserv and related processes (such as wuauclt.exe or svchost.exe) If you are reporting high CPU usage on your PC, then Windows Update is running.
The possible answer is that Windows Update is doing what it does best – downloading and installing the update. Some updates (especially large feature updates) take time to download and install, requiring additional system resources to complete the process. If so, do not panic.
Allow Windows Update to complete the update process and when instructed, restart your PC to finish. You can check your Windows Update status (whether an update is currently being downloaded or installed) in the Windows Settings menu.
- To test it, right-click on the Start menu and select Adjustment.
- In the Windows Settings menu, select Update and security > Windows Update. From here, you will see the current status of the Windows Update service, including whether an update is available, being downloaded, or currently being installed.
If Windows Update is using a significant amount of your system resources without any sign of normal activity (such as downloading or installing updates), then you should continue to investigate possible solutions to the problem using the steps below. Will have to be kept.
Check your system files and repair them
Imagine that your Windows installation is like an expensive carriage clock. This may sound simple, but underneath, all kinds of cogs, levers, and fixtures come together to form the system you’re using.
If one of those cogs breaks or gets damaged, however, the entire system stops working. In this example, the cogs that break are your system files. Corrupt system files cause problems, whether it is normal system instability (including high CPU usage) or more severe BSOD Crashes and Errors.
The Windows Update service is one of these cogs. If you are seeing problems with Windows Update, you should check your system files for errors and if they are found, fix them. You can do this by using using System file checker Tools in Windows PowerShell.
- To start, right-click on the Start menu and select Windows PowerShell (admin).
- In the PowerShell window, type / Sfc scano Choose more Enter To run the command. It will run an integrity check on your system files, compare it with the standard Windows installation image and automatically resolve any corrupt files, but watch for any additional on-screen instructions.
Disable Windows Update Delivery Optimization
If you have multiple Windows 10 PCs in your local network, you may see an increase in CPU usage from the wuauserv service and related processes. This is due to Distribution optimization System, which helps limit the amount of bandwidth used for Windows Update downloads by sharing files on your network.
If you have a PC that downloads a major update, this update is automatically shared with other Windows PCs on your network using delivery optimization. The same system can also be used to provide updates to other Internet-based devices, thanks to the peer-to-peer nature of the system.
This can eat up your available Internet bandwidth (including any data cap on your connection), but when content is shared with other devices, it can cause spikes in your CPU usage. To limit this, you can completely stop delivery optimization in Windows settings.
- To start, right-click on the Start menu and select Adjustment.
- In Windows Settings menu, select Update and security > Distribution optimization.
- Choose Allow download from other pc Slider in Distribution optimization Menu switching to Close Post. Alternatively, leave the slider enabled, but select PC on my local network Below to limit update file sharing for other Windows PCs on your local network.
Once you disable delivery optimization, restart your PC to ensure that the changes take effect.
Check for malware using Microsoft Defender
If your PC is infected with a virus or malware, the effect on your PC can be significant. Stopping Windows updates is a possible route to prevent potential malware infections, especially security updates that can prevent certain types of malware from being affected.
If so, you have to Scan your pc for malware. While third-party tools are available for this, the best way is to run a boot scan of your PC using the built-in Microsoft Defender.
It can fully develop antivirus and anti-malware solutions Remove the most stubborn malware infections From your PC. However, you can only use Microsoft Defender if you are not already using a third-party antivirus. If you are, consider using the boot scanning features of that tool as an alternative.
- To start, right-click on the Start menu and select Adjustment.
- In the Settings menu, select Update and security > Windows security > Open windows security.
- In the Windows Security window, select Virus and Threat Protection > scan options. A list of additional scanning methods for Microsoft Defender will appear below.
- Choose Microsoft defender offline scan Option listed then select scan Now To schedule it.
- Windows will ask you to close any open windows, save your work, and prepare to restart. Choose The scan To move forward.
After a few moments, Windows will restart and boot into the Microsoft Defender scanning menu. Microsoft Defender will check your PC for malware — follow any additional instructions on-screen to remove any infected files, confirm quarantines, or possible fixes.
Turn off automatic windows update
Although it is not possible to completely disable the Windows Update service and prevent updates from being installed, you can temporarily stop them. By stopping these updates, you can troubleshoot further problems, especially if a specific update is causing you problems.
- Start by right-clicking on the Start menu and selecting Adjustment.
- In the Settings menu, select Update and security > Windows Update. You can choose to stop the Windows Update service for a week Hold update for 7 days the option. Alternatively, select advanced options To choose long term.
- Use Stop update In the drop-down menu advanced options To select a date to resume Windows Update. The change will be applied automatically.
If you delay your update using the Advanced Options menu, you must install the missing update once the date has passed before the process can be repeated.
Keep windows 10 updated
If the wuauserv service is causing high CPU usage on your PC, it likely indicates some overdue system maintenance. Windows Update is part of that process, but if an update seems troublesome, you may need it Stop windows update installation To investigate and resolve any underlying issues first.
You can also think Keeping your device drivers updated Automatically using Windows Update or a third-party app, although some components (including yours) graphics card) You may need to download the latest drivers manually. If you are concerned about old software, you can also Update your apps automatically.