Fix problems that block programs from being installed or removed

Note: Use these steps for Windows programs. If you’re having problems with an app you got from Microsoft Store, go to Fix problems with apps from Microsoft Store.

The Program Install and Uninstall troubleshooter helps you automatically repair issues when you’re blocked from installing or removing programs. It also fixes corrupted registry keys.

First, you’ll need to download the troubleshooter.

If you see the File Download box when you start downloading, select Run or Open.

The troubleshooter provides steps for you to follow. If a program isn’t listed in the uninstall options, you’ll be asked for that program’s product code. To access the code, you’ll need a tool for reading MSI files—which is typically available to IT professionals. You’ll find the product code in the property table of the MSI file.

What it fixes

The troubleshooter helps fix problems that:

Corrupt registry keys on 64-bit operating systems.

Corrupt registry keys that control the update data.

Prevent new programs from being installed.

Prevent existing programs from being completely uninstalled or updated.

Block you from uninstalling a program through Add or Remove Programs (or Programs and Features) in Control Panel.

If you’re trying to remove malware, you can use Windows Security (or another antivirus tool), or you can use the Windows Malicious Software Removal tool.

Windows help & learning

What’s new in Windows 10?

Find out what’s been added to recent Windows updates and learn how to get the Windows 10 October 2020 Update.

Explore Windows

Find out how to use Windows Update to keep your PC up to date, on your terms.

Learn how to free up drive space on your PC.

We have some suggestions to help make your Windows 10 PC run better.

Windows Security provides the latest antivirus protection for your PC, and we’ll show you how to use it.

Get the best display on your monitor

Windows looks at your monitor and determines the best display settings.

Learn how to update Windows 8 to Windows 8.1, if you can’t upgrade to Windows 10.

Find PC settings

Install devices, personalize your PC, and choose how Windows is configured in Settings.

Make your PC easier to use

Change accessibility settings to make your PC look, sound, and react the way you prefer.

Windows 7 support ended

Support for Windows 7 ended on January 14, 2020. Get the details and learn what it means for you.

Get ready for the big move

Moving to a Windows 10 PC? We’re happy to hear it and we’ve got the info you need to make a smooth transition.

Take your files with you

Learn how to move files off a Windows 7 PC with an external storage device.

Troubleshoot problems updating Windows 10

In Windows 10, you decide when and how to get the latest updates to keep your device running smoothly and securely. This article will help you answer questions and troubleshoot common problems with your Windows 10 update.

If you’re looking for info on how to activate Windows 10 or to verify that your installation of Windows 10 is activated, see Activate Windows 10.

Have issues installing Windows updates? Start here.

Your device may not be able to update to the latest version of Windows 10 for a few reasons. The following tips can help you pinpoint the issue affecting your device.

Before you begin, make sure your device is plugged into a power source and connected to the internet. Then, try the steps listed below to get your PC to update.

Some updates require administrator access. If your account doesn’t have administrator access, see Create a local user or administrator account in Windows 10. Or if someone else at home or in your office has an administrator account on your device, try asking them to install the updates.

Before trying any of the solutions below, make sure you back up your personal files. You can use File History to back up your files to another drive, or insert a USB drive and use File Explorer to drag and copy important files to the USB drive. If you’re signing into Windows with a Microsoft account, your system settings will be automatically restored after updating, once you’re connected to the internet.

You can also back up your files with OneDrive. For more info, go to Back up your Documents, Pictures, and Desktop folders with OneDrive.

Make sure that your device has enough space. Your device requires at least 16 GB of free space to upgrade a 32-bit OS, or 20 GB for a 64-bit OS. If your device has a small hard drive, you may need to insert a USB drive to update it.

If your PC is running low on storage, try the techniques at Free up drive space in Windows 10.

Many updates require you to restart your device. Save your work and close all open applications. Then, select Start > Power , and select either Update and restart or Update and shut down.

Even if you have downloaded some updates, there may be more available. After trying the preceding steps, run Windows Update again by selecting Start > Settings > Update & Security > Windows Update > Check for updates. Download and install any new updates.

Remove any external storage devices and drives, docks, and other hardware plugged into your device that aren’t needed for basic functionality. Then try to run updates again and see if this resolved your issue. If it didn’t, continue to the next tip.

If you’ve added hardware to your device, check for third-party driver updates and installation instructions on the hardware manufacturer’s website. Update any drivers, then try to run updates again and see if this resolved your issue. If it didn’t, continue to the next tip.

In the search box on the taskbar, type device manager, then select Device Manager from the list of results.

In the window that appears, look for any device with a yellow exclamation mark next to it. (You may have to select each category to view the list of devices.) Select the device name.

Select Action, and then choose either Update driver or Uninstall to correct the errors.

Common troubleshooting questions

If you are receiving an error message with a specific error code, try running the Windows Update Troubleshooter. If that doesn’t resolve the issue, see Fix Windows Update errors and follow the instructions to help resolve common update issues.

The time required to download and install updates depends on connection speed, network settings, and the size of the update. If the installation remains stuck at the same percentage, try checking for updates again or running the Windows Update Troubleshooter.

To check for updates, select Start > Settings > Update & Security > Windows Update > Check for updates.

To get help, in the search box on the task bar, type get help, then select Get Help from the list of results. To leave feedback if you run into further problems, in the search box on the taskbar, type feedback hub, then select Feedback Hub from the list of results.

Windows 10 is the most secure Windows ever, and we recommend you stay updated to protect your PC from security risks and to keep it running smoothly. However, you can temporarily pause updates as well as schedule a restart to install updates at a time that’s convenient for you.
Learn how to temporarily pause updates
Find out how to schedule a restart to install updates at a convenient time

You will only receive a notification when it’s time to restart your computer to apply the installed updates.

If you need to know where you left off in your work after an update, use Timeline to jump back in.

To get started with Timeline, select Task View on the taskbar, or press the Windows logo key +Tab and select the activity you want to resume.

Monthly quality updates on Windows 10 are quite small and have a minimal impact on data usage. Feature updates typically happen twice per year, and you can control when to install them. They require more data but are less frequent.

If you’re on a metered connection, some updates for Windows won’t be installed automatically. Metered connections in Windows 10

Your computer might be slow for a number of reasons, but updating to the latest version of Windows 10 can improve its performance. For help with a slow computer, see Tips to improve PC performance in Windows 10.

If you’re having trouble finding your files after an upgrade, see Find lost files after the upgrade to Windows 10 for other things to try.

Warning: Microsoft only recommends trying the procedures in this section if you’re comfortable working in the command line. These procedures require administrator permissions on your device.

In the search box on the taskbar, type command prompt, then select Run as administrator from the list of options. Select Yes. Next, in the window that appears, type the following commands one at a time, including the spaces as shown. After you type each command, press Enter. Then let each command complete before you type the next command.

net stop wuauserv

ren %systemroot%\softwaredistribution softwaredistribution.bak

ren %systemroot%\system32\catroot2 catroot2.bak

net start wuauserv

After all these commands are completed, close the Command Prompt window and restart your computer.

In some instances, third-party antivirus or security software can cause errors when you try to update to the latest version of Windows 10. You can temporarily uninstall this software, update your PC, and then reinstall the software after your device is up to date. We recommend using third-party antivirus or security software that’s compatible with the latest version of Windows 10. You can check compatibility by visiting the software manufacturer’s website.

Note: Before uninstalling software, make sure you know how to reinstall your programs and that you have any necessary product keys.

In the search box on the taskbar, type command prompt, and then select Run as administrator from the list of options. Select Yes. In the window that appears, type the following command, including the space as shown:
chkdsk/f C:
and then press Enter. Repairs will automatically start on your hard drive, and you’ll be asked to restart your device.

A clean restart starts Windows with a minimal set of drivers and startup programs. This helps eliminate software conflicts that occur when you install a program or an update that may cause issues updating your PC.
Learn how to do a clean restart

In the search box on the taskbar, type command prompt, then select Run as administrator from the list of options.

In the window that appears, type this command including spaces as shown:
DISM.exe /Online /Cleanup-image /Restorehealth

Press Enter. When the command operation has run successfully, you’ll see a confirmation message from Command Prompt that says, “The restore operation completed successfully” or “The operation completed successfully”.
Note: If you don’t see a confirmation message, retype the command and try again.

Next, type this command, including the space as shown:
sfc /scannow

Press Enter. Wait until the sfc scan verification reaches 100% completion, and then close Command Prompt.

Try running the Windows Update again.

Go to the software download page and select Download tool now to download the clean installation tool. Make sure to carefully read the notes on the software download page before using the tool.

Still stuck?

Contact Microsoft support if you continue to have problems with your Windows updates.

6 common computer problems. and how to fix them

By Luke Edwards 30 March 2021

No one likes it when your computer suddenly stops working, so we’ve listed the most common computer problems and explained how to fix each one.

The most common computer problems might be something a lot of people have to struggle with, but that doesn’t mean you have to. Now you’re here, you no longer need to worry about that spinning wheel of doom or the jolting error messages that come with a blue screen of death. You’ve found the fix.

A computer crash, when everything freezes, can be annoying at best but may be catastrophic if you’re working and you end up losing your efforts. Yes, cloud storage is a great way to work to help offset this, but even that can have issues.

You may have already wisely invested in the best home computers or the best laptops, but there can still be issues. Often those issues are in the form of error messages which make little to no sense to a normal human being. That’s why we’re going to get ahead of the problems before they arrive, or at least know how to fix them should we run into trouble. While this guide will help you it’s also worth checking out the best repair software for PC should you need to take this even further.

1. WiFi is slow or patchy

The most common issue these days that really grinds our gears is WiFi connectivity problems. Since most cloud-based programs now rely on that WiFi bandwidth to work, it has become the bottleneck through which everything else must pass. As a result, slow or inconsistent WiFi means much of what you’re running can be backed up.

Slow WiFi can mean poor video chat connections on Zoom, it can mean buffering wait times for video and audio streaming, it can even mean documents are not saved properly leaving you at risk of losing work. That’s all without even considering large file downloads which take up even more bandwidth.

The fix
While WiFi is a complicated beast, and everyone’s setup is slightly different, the classic go-to first fix is one you probably already know and the one that works best: turn the WiFi off and on again. But there is an art to doing even this correctly. The key here is to make sure your connection is totally down, before you power on again. This means you’ll be assigned a new IP address and any of your caches will be cleared.

To do this right, go to your WiFi router and unplug it. That’s a total power off, guaranteed. Then wait at least one minute. Ideally, if you can spare it, wait five for good measure. Then plug the power back in and wait for everything to get back online. This can take a good five minutes and may need a while to ‘settle’, so it’s worth giving 10 to 15 minutes before you jump back in, ideally.

Another good move is to restart any devices you’re using, regularly. For laptops, phones and desktop computers, that means a shut down and power on at least once a day. You get to sleep and refresh, why shouldn’t your hard working gadget?

To see how well this all works, carry out a speedtest first, then go through the process and do a speed test again. You may be surprised to see how much faster everything is running after this refresher.

2. Blue Screen of Death (BSoD)

The ‘blue screen of death’ is one of the most recognisable computer errors that can occur, and if you’ve ever used a PC there’s a good chance that you might have encountered a blue screen of death error already.

What usually happens is that your PC will become unresponsive for a few seconds, and then the screen will turn completely blue and an error message (that’s sometimes completely indecipherable) will appear. Your PC will then restart, and if you’re lucky you won’t have lost too much work.

While the name ‘blue screen of death‘ started off as a bit of a joke, it hints at how scary this error message can be. If you get a blue screen of death without saving your work, the resulting reboot of your PC can make you lose any changes you’ve made to a document.

While some blue screen of death errors are one offs, most of the time they are an indication that there’s something wrong with your PC, and there are a number of reasons why you may get a blue screen of death error. Failing hardware, corrupted software, missing DLL files or problems with drivers can be the main culprits.

The fix
The way to fix a blue screen of death error will vary depending on what caused it to appear. The good news is that in Windows 10, Microsoft has made the blue screen of death error message more useful than the baffling codes of old.

There will also be a QR code that is displayed along with the error message. Use your smartphone to scan the QR code and you should be taken to a webpage that will explain the error message in more detail, and offer advice on how to fix it.

3. Windows is slow to boot

A slow-booting PC is one of the most common — and annoying — computer problems you can encounter. Luckily, it’s also one of the easiest to fix. There are several reasons why your PC will take a long time to load up — but the most common cause is that there will be too many programs trying to load up in the background when Windows starts.

You may notice when you install a new program that it sets itself to load when you first log into Windows. While this can sometimes be useful, as a means those programs open up quickly when you need them, when too many of them try to start up once it can slow your PC to a crawl. The easiest way to fix this problem is to identify what programs are loading up when Windows starts and disable any programs that you do not need.

The fix
To fix this, open up the Task Manager in Windows 10 by pressing CTRL + Shift + Esc on your keyboard. In the Task Manager window, click on the ‘Start-up’ tab at the top of the window. This lists all the apps and programs that load when Windows 10 starts up. If this is a long list, that will be the cause of your PC being slow to boot.

In the Task Manager, you’ll see the name of the app followed by the publisher, its status and the start-up impact. If it says “High” in the ‘Start-up impact’ column, then that means the program is slowing down Windows 10’s boot-up speed. If you don’t need the app to load when Windows starts, then right-click on its entry and select ‘Disable’. This will prevent the app from loading when Windows 10 starts.

Remember, this doesn’t mean you won’t be able to use the app when you need it, it just means it doesn’t preload with Windows. Hopefully, disabling a number of these apps will make a noticeable difference to the time it takes for Windows 10 to load.

If you find that your PC is still slow to boot, there may be other issues affecting it. For example, you may want to check that you have the latest updates and drivers installed for your hardware. If you really want to give your PC a speed boost when it comes to boot times, then you may want to think about installing an SSD in your PC and running Windows 10 from that. An SSD (Solid State Drive) is a much faster drive than a traditional hard drive and installing Windows 10 on one can make a huge difference to how fast it boots.

4. Applications won’t install

Another common computing problem that many people face are applications not installing. The main reason for this is a lack of hard drive space. If your hard drive has become full, it may mean that you are no longer able to install new applications. If this is the case, then you’ll need to do a bit of spring cleaning.

The fix
First of all, you can delete any large files that you no longer need. Open up File Explorer and then navigate to your Downloads folder. This folder often holds lots of large files that you no longer need, so feel free to delete any large files from there.

You can also free up hard drive space by uninstalling any programs that you no longer use. In the search box in the Taskbar (this is the bar that runs along the bottom of your screen in Windows 10) type in “uninstall”, then click on ‘Add or remove programs’. Scroll down the list of programs that is displayed and click on any that you no longer need. A button will appear saying ‘Uninstall’. Click it to remove the program from your PC.

You can also get Windows 10 to clean up your hard drive for you. Again, in the search box of the taskbar, type in “disk cleanup” and then press return on your keyboard. From the window that appears, select the drive that you want to clean up. By default this will be the C: drive, which is where Windows 10 and the majority of the programs will be installed. Click ‘OK’, and Windows 10’s Disk Clean-up tool for scan your drive and find files that you can safely delete to free up disk space. From the window that appears you’ll see how much space you can save on your hard drive. Tick the box next to each type of file that you want to remove then click ‘OK’.

5. Windows Update problems

It’s important to keep Windows 10 updated to ensure that your PC runs as well as possible, whilst also being protected against the latest security threats. Even the best antivirus software won’t keep you safe if your version of Windows is out of date. However, there are times when you may encounter a problem when updating Windows 10.

One of the most common problems with Windows Update is when an update fails to install. You will usually see an error message appear explaining that the update has not been successful. Most of the time, this error message is quite good at explaining what the problem is and how to fix it, and one of the most common reasons for Windows update not installing is incompatible software. This means you may have an old version of an app or program that is preventing the Windows update to install. If this is the case, the error message should explain which program is causing the issue.

The fix
Either uninstall the program which is causing the error, or visit the developer’s website to make sure you have the latest version installed. Afterwards, try installing the update again.

Another reason why a Windows update may fail to install is due to a lack of hard drive space. Each update requires a minimum amount of hard drive space to be available to install correctly, and if your hard drive is too full, then the installation will fail. To fix this problem, free up hard drive space using the methods we outlined in the step above.

If you find that your computer is behaving erratically after installing a Windows update, then it could be that the Windows update itself is causing the problem. To fix this, you will need to uninstall the update. To do this type in “Windows update” into the Taskbar search box and select ‘Windows Update settings‘. In the window that appears, click ‘View update history’. Then, select either ‘Uninstall updates’ or ‘Recovery options’ and follow the steps to uninstall the problem update. Make sure you check Microsoft’s support website to see if Microsoft has released a permanent fix for the problem update.

6. Apps behaving badly

Another common PC problem is when apps and programs start acting strangely. Perhaps they suddenly close down without warning, or maybe documents look a bit strange in Word.

Once again, there is a wide range of reasons why an app may not be working correctly.

The fix
The first thing you should do is save your work, then restart your PC. Load up the app, and see if it is now working as intended.

If there’s still an issue, you next port of call should be an internet search engine, where you can type in the name of the program and a description of the issue. Hopefully, other people will have had similar issues, figured out how to fix it, and shared their solutions online.

It’s also worth checking the website of the developers of the app to see if they have released a fix. If the developer’s website has a forum, that can be a good place to look for fixes. While you’re there, make sure you have the latest updates installed. If that fails to fix the problem, it may be worth contacting the app’s support team for more help with fixing the problem.