How to Fix Error Code 0x80060100 on Your PC

If you were trying to run Windows Update or activate Windows Firewall or download from the Windows Store but encounter the Windows Update Error 0x80070422 instead, read on as this post will show you how you can resolve the problem. This kind of Windows Update error occurs when the Windows Update or WUAUSERVE is not started or when the Background Intelligent Transfer Service or BITS can’t be started. It could be that they are disabled or because they have no enabled devices associated with them. Whichever the case is, you can check out the options given below to fix the Windows Update Error 0x80070422 and make sure that you create a System Restore point first before you start.

Option 1 – Check the status of some Windows Update Services

• Tap the Win + R keys to open the Run dialog box.
• Next, type “services.msc” in the field and hit Enter or click OK to open Services.
• From the list of Services, look for the following services and make sure that their Startup type is as follows:
  • Windows Update – Manual (Triggered)
  • Background Intelligent Transfer Service – Manual
• After that, check if the Service status of the listed services above is set to Running. If they’re not, click on the Start button to start these services and then check if you can now enable the Windows Update service or not.

Option 2 – Try to disable IPv6 in the Network Center

You might also want to disable IPv6 in the Network Center in order to fix the Windows Update Error 0x80070422. How? Follow these steps:

• Tap the Win + X key combination on your keyboard and click on Network Connections.
• This will open the Network Connections section under the Setting app. From there, click on the Network and Sharing Center link located at the right side of the panel which will open a Win32 version of the Windows settings known as Control Panel.
• In the Control Panel, click on the network your computer is connected to.
• A mini window will appear and in that window click on Properties which will open another mini window that will provide a list.
• From this list, uncheck the option that says, “Internet Protocol Version 6 (TCP/IPv6)”.
• Now click on OK and close all the other windows and see if it fixes the Windows Update error.

Option 3– Run the Windows Update Troubleshooter

If disabling IPv6 didn’t work, you could also try running the Windows Update Troubleshooter as it could also help in fixing any issues related to Windows Update including the Windows Update Error 0x80070422. To run it, go to Settings and then select Troubleshoot from the options. From there, click on Windows Update and then click the “Run the troubleshooter” button. After that, follow the next on-screen instructions and you should be good to go.

Option 4 – Try running the DISM tool

You can also try to run the Deployment Imaging and Servicing Management or DISM tool to fix the Windows Upgrade error. Using this built-in tool, you have various options such as the “/ScanHealth”, “/CheckHealth”, and “/RestoreHealth”.

• Open the Command Prompt with admin privileges.
• Then type in the following commands and make sure to hit Enter right after you type each one of them:
  • Dism /Online /Cleanup-Image /CheckHealth
  • Dism /Online /Cleanup-Image /ScanHealth
  • exe /Online /Cleanup-image /Restorehealth
• Do not close the window if the process takes a while as it will probably take a few minutes to finish.

Option 5 – Run Microsoft’s online troubleshooter

Running Microsoft’s online troubleshooter might also help you fix the Windows Update Error 0x80070422. This online troubleshooter is known to help in fixing Windows Update errors, it scans your computer for issues that might be causing the problem and then fixes them automatically.

Qtcore4.dll Error - What is it?

Qtcore4.dll is a dynamic link library file that helps Microsoft Windows in loading several key components of the system. The Qtcore4.dll error occurs when the Qtcore4.dll file cannot be loaded to run the application supported by this .dll file. The Qcore4.dll missing error message may occur while booting your system or launching a certain program. It is a blue screen of death error type. The Qtcore4.dll error code is often displayed as:

BLUE SCREEN ERROR - QtCore4.dll Not Found

Filei386QtCore4.dll could not be loaded. The error code is 7. Setup cannot continue. Press any key to exit.

Solution

Error Causes

This error code is triggered by a variety of reasons such as:

• Windows file allocation file gets damaged
• Your computer BIOS (Basic Input/Output System) are misconfigured
• The Qtcore4.dll file gets corrupt
• Registry gets damaged and corrupt
• Non-Microsoft program not running in tandem with Windows
• Malware attack
• Improper hardware driver software

It is advisable to fix the Qtcore4.dll error code immediately as this error can pose serious threats to your system. Qtcore4.dll error can lead to system breakdown.

Further Information and Manual Repair

Here are some ways of fixing the Qtcore4.dll error on your system:

1. Re-install the Program Causing Qtcore4.dll error message to pop up

As dll files are shared files sometimes due to program deletion and installation .dll file settings can get misconfigured, damaged, and corrupt. In such a scenario, you can try reinstalling the program that is causing Qtcore4.dll error message to appear on the screen.

2. Reconfigure your Mis-configured BIOS

If BIOS misconfiguration is the cause of this error code on your system, then try reconfiguring your system’s misconfigured BIOS.

• To do this boot the computer and then press the BIOS designated keys to enter the BIOS. The keys may vary from manufacture to manufacture but typically, the setup keys are F2, F10, F12, and Del.
• Once you figure out the setup keys, press them rapidly when booting the computer.
• After successfully hitting the setup keys, the BIOS will load and you will see the BIOS setting menu on your screen. Adjust settings. Go to SATA Operation and change RAID AHCI to RAID ATA. Save changes and then exit.

3. Scan Your PC with a Registry Cleaner and an Antivirus

However, after adjusting the BIOS if the error still pops up on your screen, then this indicates the problem is bigger than you think. It triggers either malware attack or registry corruption. If these are the underlying causes for the Qtcore4.dll error on your system then you need to scan your PC with a registry cleaner and an antivirus. Registry is the main database of your system; if this gets corrupt it is most likely to result in system failure and valuable data loss. And as for malware, the biggest concern is data security threats. Today’s advanced and lethal malware like viruses and spyware can give easy access to hackers to enter your system from a remote location, browse through your confidential and private data and manipulate it to their advantage. This has led to a surge in various types of cyber crime, data breaches, and identity theft cases over the years. To avoid all this while resolving the error code Qtcore4.dll on your PC, registry cleaning and repair and antivirus scan are needed. You can either download 2 separate tools on your system to scan your PC which by the way will take a lot of time and increase your chances of the system slow down or you can download Restoro.

Why Restoro?

• Total System Care is an advanced, user-friendly, high, and multi-functional repair.
• It is deployed with a powerful and intuitive registry cleaner. It also functions as a system optimizer. It spares you from downloading numerous tools to address and resolve different errors on your PC.
• It is your one-stop solution for not only Qtcore4.dll problems but practically all PC-related issues.
• The registry cleaner utility detects all the malicious, unnecessary, and obsolete files overloading and corrupting your RAM.
• This includes junk and temporary files. It wipes them out thus clearing your disk space. Simultaneously, it also repairs the damaged and misconfigured dll files including the Qtcore4.dll file, and fixes the corrupt registry.
• The privacy error utility has the properties of an antivirus. It detects and removes malware, viruses adware, and spyware from your system in seconds.
• Total System Care resolves the Qtcore4.dll error on your system and boosts the performance of your system. It has a simple and neat interface which makes it quite easy for users to operate it, even those who are not technically adept.
• It is compatible with all Windows versions

Click here to download Restoro and repair the Qtcore4.dll error on your PC.

This post will guide you on how you can fix the Error 0x80070079. This kind of error mostly occurs during the transfer of files across the networks. It could be caused by several factors which include the incorrect configuration of drivers or the network, as well as deadlock state or the server is loaded with a lot of tasks and if any location is not available. This error could also appear when you try to create a System Image or copy or move files on your computer. Here’s the full context of the error message:

“Error 0x80070079: The semaphore timeout period has expired.”

To fix this error, you can try to run the three built-in Network-related troubleshooters or update or reinstall the network adapter drivers or perform a network reset. For more details, follow the options laid out below.

Option 1 – Try to run the three built-in Network-related troubleshooters

The first thing you could do to fix the problem is to run any of the three built-in troubleshooters related to Networks such as Incoming Connections, Network Adapter, and Shared Folders troubleshooters. To access them, just open the Windows Settings app, and go to Update & security > Troubleshoot. From there, run any or each one of the aforementioned troubleshooters.

Option 2 – Update the Network Adapter drivers

You might also want to update the Network Adapter drivers by following these steps:

• Tap the Win + R keys to launch the Run window and then type in the “MSC” command and hit Enter to open the Device Manager window.
• Under the Device Manager, you will see a list of drivers. From there, look for the Network Adapters and expand them.
• Then right-click on each one of the Network drivers and update them all.
• Restart your PC and see if it helped in fixing the BSOD error.

Note: If updating the network drivers didn’t help in fixing the “Windows could not find a driver for your network adapter” error, you can also try to uninstall the very same drivers and restart your Windows 10 PC. After that, the system itself will reinstall the drivers you just uninstalled. Alternatively, you can also download and install the drivers from the manufacturer’s website directly. To reinstall the network adapter driver, refer to these steps:

• Open the Devices Manager from the Win X Menu.
• Then locate the device drivers and right-click on them to open the Properties.
• After that, switch to the Driver tab and click on the Uninstall Device button.
• Follow the screen option to completely uninstall it.
• Finally, restart your computer. It will just reinstall the device drivers automatically.

Option 3 – Perform a Network Reset

Network Reset is a feature in Windows 10 that will help you reinstall the Network adapters as well as reset the Networking Components back to their original settings.

• Open the Start Menu and click on the Settings icon.
• Next, click on the Status link on the left side where you should see the status of your Network. Aside from that, you should also see a link that will let you open the Network Troubleshooter – click on that link to expand Network Troubleshooter.
• Under Network Troubleshooter, select the link for “Network reset”.
• After you click on Network reset, it should redirect you to the following page. From there, click on the Reset now button.

Recently, a number of users reported that their Google Chrome browsers keep on opening new tabs no matter what they do. This issue could be due to lots of reasons but the main ones are corrupt installation, background applications, adware, dubious browser extensions, malware, and so on. Although there are a lot of possible causes for this particular issue in Chrome, its potential fixes are straightforward so you should not have any problem following the given options below.

Option 1 – Get rid of any conflicting browser extensions

As mentioned, shady browser extensions can cause unusual behavior in a browser. Chances are, these extensions or toolbars might be conflicting with the loading of the website. Thus, you have to get rid of these unwanted extensions and toolbars to fix the issue.

• Open Chrome and press Alt + F keys.
• Go to More tools and click Extensions to look for any suspicious browser extensions or toolbars.
• Click the Recycle bin and select Remove.
• Restart Chrome and press Alt + F keys again.
• Proceed to On Startup and mark Open a specific page or set of pages.
• To check if the browser hijacker is still active, click Set pages, if it is active, overwrite the URL.

Option 2 – Try to disable applications from running in the background

• Open Google Chrome and then click on the menu button located in the top-right corner.
• From the drop-down, select Settings and then scroll down until you see the Advanced button. Click on it.
• Next, turn off the toggle for “Continue running background apps when Google Chrome is closed” under the System section.
• Now restart Chrome and check if it is working properly.

Option 3 – Try to configure the search settings of Chrome

• Open Google Chrome and type any search query in the address bar and then tap Enter.
• After that, it will open the Google search engine. From the top-right corner, click the Settings button.
• Next, select Search settings from the drop-down menu.
• Then scroll down to the new page that appears and make sure that the “Open New Window for each result” option is set to Uncheck.
• Once you’re done, save the changes made and restart Google Chrome.

Option 4 – Reset Chrome

Resetting Chrome can also help you fix the error. This means that you will be restoring its default settings, disabling all the extensions, add-ons and themes. Aside from that, the content settings will be reset as well and the cookies, cache, and site data will also be deleted. To reset Chrome, here’s what you have to do:

• Open Google Chrome, then tap the Alt + F keys.
• After that, click on Settings.
• Next, scroll down until you see the Advanced option, once you see it, click on it.
• After clicking the Advanced option, go to the “Restore and clean up option and click on the “Restore settings to their original defaults” option to reset Google Chrome.
• Now restart Google Chrome.

Option 5 – Try to clean reinstall Chrome

There are instances when programs leave files behind after you’ve uninstalled them and the same thing can happen to Chrome so before you reinstall Chrome, you have to make sure that you have deleted the User Data folder. To do so, refer to the following steps:

• Hit the Win + R keys to open the Run dialog box.
• Next, type “%LOCALAPPDATA%GoogleChromeUser Data” in the field and hit Enter to open the User Data folder.
• From there, rename the default folder and name it something else, e.g. “Default.old”.
• After that, install Google Chrome again and check if the issue is now fixed.

Option 6 – Try scanning your computer using Windows Defender

As mentioned, the error when accessing the security settings or properties of a folder or file might be due to a virus or malware. It could be that it had made some modifications that prevents you from accessing security settings or properties. To eliminate it, you have to scan your computer using security programs like Windows Defender.

• Tap the Win + I keys to open Update & Security.
• Then click on the Windows Security option and open Windows Defender Security Center.
• Next, click on Virus & threat protection > Run a new advanced scan.
• Now make sure that Full Scan is selected from the menu and then click the Scan Now button to get started.

Stop 0x00000050 is an error code that is popularly known as the Blue Screen of Death (BSoD) error. This error occurs when Windows crashes on your system. Stop 0x00000050 error is displayed in a blue screen which is why it is called the BSoD error.

The error message appears in the following form:

Stop 0X00000050 (parameter1, 0, parameter3, parameter4)

PAGE_FAULT_IN_NONPAGED_AREA”

However, the parameters within the Stop 0x0000005 error message sometimes vary depending on your PC configuration.

Solution

Error Causes

The most common causes of the Stop 0x0000005 error are:

• Hardware malfunctioning
• Overheating of the components
• Installation of a faulty device driver
• Incompatible DLL files
• Corrupt Registry
• Spyware and Virus Infection

Whatever the cause may be, the Stop 0x00000050 error message is alarming and should be fixed at the earliest as it indicates major system stability problems that can often lead to data loss and system corruption.

Further Information and Manual Repair

To fix and repair the Stop 0x0000005 error you don’t always have to hire an IT professional. In fact, fixing this error is quite easy and you can do it yourself regardless of whether you have a good know-how of computers or not.

So, let’s get started! Here are some the easy DIY solutions to fix the Stop 0x0000005 error:

Sometimes this error may occur due to a temporary issue like overheating of the computer components. When this happens all you need to do is switch off the computer and allow the components to cool down. Try starting up your computer after a couple of hours. If the blue screen of death does not occur again, then this means there is nothing to worry about and the problem is resolved.

However, if the error appears again on your screen, then you need to try something else to solve and fix this error on your PC. If the cause of the error is a faulty device driver, then it is advisable to disable and remove it. Try updating the latest version of the faulty device driver. Using updated software helps ensure your PC keeps running smoothly.

If the cause of the Stop 0x0000005 error code is your system's exposure to viruses and spyware, then you must immediately download a powerful antivirus program. After you download it, scan for viruses on your system. Once the scanning is complete, you will see a scan report showing viruses on your PC. Delete all of them and click on repair.

Furthermore, you can also add more RAM to prevent and fix the Stop 0x0000005 error message on your computer. This solution is suitable when you try to run a program on your PC and you get this error message.

The SearchUI.exe file is the one that manages the search feature of Cortana. However, a number of users have recently reported that this feature stops responding within minutes of booting their Windows 10 computer. This kind of problem could be caused by missing system files or some issues with the Cortana program itself. And so if the SearchUI.exe file is not responding, then you wouldn’t be able to use the search feature of Cortana. But worry not for this post will walk you through fixing this problem. Before you troubleshoot the problem, you can try to restart your computer and see if it helps, if it doesn’t, then proceed to the given options below.

Option 1 – Try to run the Search and Indexing troubleshooter

You might also want to run the Search and Indexing troubleshooter in Windows 10 as it checks whether the settings for Cortana are in place and automatically corrects any issues if the update or software installation has changed the settings. To run it just click on the Start button and select Settings > Updates and Security > Troubleshoot. From there, select the Search and Indexing Troubleshooter.

Option 2 – Restart Cortana’s process in the Task Manager

Restarting Cortana’s process in the Task Manager could also help you resolve the problem. Refer to the steps given below to do so.

• Tap the Ctrl + Alt + Del keys to open the Security options window.
• From there, look for the Task Manager in the given list and open it.
• Next, look for the process of Cortana and right-click on it, and then select the End Task option to end its process.
• After that, the Cortana process will restart by itself and re-initialize.

Option 3 – Try resetting Cortana

• Open Cortana and go to the Settings section where you’ll see the “Turning off Cortana clears what Cortana knows on this device, but won’t delete anything from the Notebook. After Cortana is off, you can decide what you’d like to do with anything still stored in the cloud” option. Turn this option off.
• Restart your PC.
• After your computer boots, launch Cortana again and check.

Option 4 – Try running the DISM tool

You can try running the Deployment Imaging and Servicing Management or DISM tool to fix the Windows Upgrade problem. Using this built-in tool, you have various options such as the “/ScanHealth”, “/CheckHealth”, and “/RestoreHealth”.

• Open the Command Prompt with admin privileges.
• Then type in the following commands and make sure to hit Enter right after you type each one of them:
  • Dism /Online /Cleanup-Image /CheckHealth
  • Dism /Online /Cleanup-Image /ScanHealth
  • exe /Online /Cleanup-image /Restorehealth
• Do not close the window if the process takes a while as it will probably take a few minutes to finish.

Option 5 – Try to reinstall Cortana

If none of the options given above works, you must consider reinstalling Cortana.

• First, right-click on the Start button and click on the Windows Powershell (Admin) option from the list.
• Next, type the following command and hit Enter to execute it:

Get-AppXPackage -Name Microsoft.Windows.Cortana | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)AppXManifest.xml"}

• Restart your computer and check if Cortana is now able to connect.

Option 6 – Try troubleshooting the problem in a Clean Boot State

There are instances that some conflicting programs installed in your computer might be the one that’s causing some issues with Cortana or causing the SearchUI.exe process to stop. To identify which program is causing the problem, you need to put your computer in a Clean Boot State. To do so, follow the steps below.

• Log onto your PC as an administrator.
• Type in MSConfig in the Start Search to open the System Configuration utility.
• From there, go to the General tab and click “Selective startup”.
• Clear the “Load Startup items” check box and make sure that the “Load System Services” and “Use Original boot configuration” options are checked.
• Next, click the Services tab and select the “Hide All Microsoft Services” check box.
• Click Disable all.
• Click on Apply/OK and restart your PC. (This will put your PC into a Clean Boot State. And configure Windows to use the usual startup, just simply undo the changes.)
• From there, start to isolate the problem by checking which one of the programs you installed recently is the root cause of the problem.

Microsoft has announced Windows 365, a new cloud-based operating system aimed mainly at businesses of all sizes. Just after Windows 11 announcement and presentation, we are seeing another Windows announcement from Microsoft. Dive into the following text in order to find out what exactly is new Windows 365, its role in today's IT world, and do you need it?

What is Windows 365 and when it is coming out?

Windows 365 is planned to be released this year (2021) on August 2^nd. It is the first Microsoft cloud-based operating system meaning that OS itself will be installed on the cloud server and it will be accessed by the user via a web browser. Essentially you are accessing a remote PC with Windows on it, you can install whatever Windows application you want and use it as it was on your computer. When you disconnect from the cloud computing and reconnect again from the same or another device you will continue exactly where you left off. Cloud PC will remember the state it was left off and will greet you in that same state once it is awakened again. This of course offers some great benefits like moving from laptop to desktop and continuing exactly where you left off.

How can I access Windows 365?

Any device which has a web browser will be able to access Windows 365 making it a really great solution for business on the move or for anyone who switches devices during the day. That being said it is clear to see that Windows 365 can be accessed via Linux, macOS, iOS, Android, or any other operating system on any computer, tablet or phone.

Who is this OS made for?

Microsoft’s general idea is that Windows 365 is primarily made for business which in their minds can benefit most out of it. So far it is not made for a single user although there is a possibility that even a one-man business can subscribe and create accounts for it.

Price and technical characteristic

Microsoft will bill Windows 365 on a per-user, per-month basis. In other words, businesses will pay a fixed amount per employee every month. There will be two tiers: Windows 365 Business and Windows 365 Enterprise. Microsoft also said it will offer different performance tiers. Businesses can choose to pay for more CPU, RAM, and storage resources for certain cloud PCs depending on their needs. Microsoft told me the smallest configuration would be one CPU, 2GB of RAM, and 64GB of storage. The largest will be eight CPUs, 32GB of RAM, and 512GB of storage. After a business has chosen its plan tier and performance options, that business will pay a fixed amount every month. This is unlike Azure Virtual Desktop, which Windows 365 is built on. With Azure Virtual Desktop, companies pay on a usage model, depending on how much the remote system is used every month.

Conclusion

Windows 365 is around the corner and if you are a business no matter small or large with the need for software on the go, Windows 365 might be a worthwhile investment and a great asset to your business.

In case you don’t know, there is a feature in Windows 10 computers that allows them to function a lot better. This feature is called Full-Screen optimization and it is enabled by default for several applications such as games and video players. If enabled, the Full-Screen optimization feature enhances the video playback and gaming by simply putting the CPU and GPU process as a priority. However, there are times when it can also result to a drop in the frame rate or FPS while in full-screen mode. And of course, the obvious solution to this dilemma is by disabling the Full-Screen optimization feature which is why Microsoft took action and removed this feature themselves in the recent Windows 10 Update releases. However, there is another way for you to enable it back or disable it yourself if you haven’t installed the recent updates yet and there are plenty of ways you can do both. All you have to do is follow the options given below carefully.

Option 1 – Try using Windows 10 Settings

If you haven’t installed the recent updates yet and all you have are the earlier releases, then this method would suit you.

• Open the Windows 10 Settings app.
• Next, navigate to System > Display > Graphics Settings or Advanced graphics settings.
• From there, uncheck the “Enable Fullscreen optimization” option if you want to disable the feature, else just keep it checked.

Option 2 – Try using the Registry Editor

• Tap the Win + R keys to open the Run dialog box and then type “Regedit” in the field and hit Enter to open the Registry Editor.
• Afterward, if a User Account Control or UAC prompt appears, click on Yes.
• Once the Registry Editor is pulled up, navigate to this registry key: HKEY_CURRENT_USERSystemGameConfigStore
• Next, right-click on Explorer and select New > DWORD (32-bit) Value and then name it to “GameDVR_DSEBehavior and tap Enter to save it.
• Now double click on the newly created GameDVR_DSEBehavior DWORD and set its value to “2” if you want to disable it, or “0” if you want to enable it.
• Once you entered the value, close the Registry Editor and restart your computer to successfully apply the changes made.

Option 3 – Try running the application in Compatibility Mode

If the first two options didn’t work, the next thing you can do is to run the application in a Compatibility Mode. Follow the steps below to do so:

• Go to the location of the application or game on which you need to disable or enable the Full-Screen optimization feature.
• After that, right-click on it and select Properties.
• Next, switch to the Compatibility tab where you can see the “Disable fullscreen optimization” option to disable the feature and vice versa.
• Now click on the Apply and OK buttons to apply the changes made in the application’s settings.

The NVIDIA Control Panel is a useful tool for users who have NVIDIA graphics on their PCs as this tool allows users to how the graphics card is used on the computer using several controls that come with the graphics card from NVIDIA. Thus, it can be quite inconvenient when it suddenly crashes all of a sudden for some reason. This kind of problem could be due to the toggling of Output Dynamic Range is limited, or there could be some issue with the integrity of the Power Supply for the graphics card, and many more. So if you are using NVIDIA on your computer and its Control Panel keeps on crashing on your Windows 10 computer, then you’ve come to the right place as this post will guide you in sorting the problem out. For more details, refer to the guidelines laid out below.

Option 1 – Try to toggle the Output Dynamic Range

The first thing you can do to fix the problem is to toggle the Output Dynamic Range by following these steps:

• Navigate to this path: Display > Change resolution.
• Next, scroll a bit on the right-side panel until you see the Output Dynamic Range drop-down.
• After that, select “Full” from the drop-down menu.
• Apply the changes you’ve made and see if it is able to fix the problem with the NVIDIA Control Panel.

Option 2 – Try changing the Power Management and Vertical Sync settings

The next thing you can do to fix the problem is to change the Power Management, as well as the Vertical Sync settings.

• Open the NVIDIA Control Panel and go to this path: 3D Settings > Manage 3D Settings.
• Next, set the Power Management to be “Prefer Maximum Performance” for your processor located on the right-side panel.
• After that, set the Vertical sync setting off and then click on the Apply button located at the bottom-right portion of the window and check if it is able to fix the problem or not.

Option 3 – Try updating the drivers from the official site of NVIDIA

If both the first and second given options didn’t work, you can also try updating the drivers from the official NVIDIA website. And in case you don’t know the type of Nvidia graphics card that your computer is on, follow the steps below:

• Tap the Win + R keys to open the Run dialog box.
• Next type in “dxdiag” in the field and click OK or hit Enter to open the DirectX Diagnostic Tool.
• From there, you can see what type of Nvidia graphics card that your system is on.
• Take note of your graphics card information and then look for the best drivers for your operating system. Once you’ve downloaded and installed the file, restart your PC.

Option 4 – Try to roll back the driver to the previous version

If updating the NVIDIA display drivers didn’t work for you, then it’s time to roll back the device drivers. It is most likely that after you updated your Windows computer that your driver also needs a refresh.

• Tap the Win + R keys to launch the Run window and then type in the “MSC” command and hit Enter to open the Device Manager window.
• Under the Device Manager, you will see a list of drivers. From there, look for the NVIDIA Drivers and expand it.
• Next, select the driver entries that are labeled appropriately.
• Then select each one of them and double click to open a new mini window.
• After that, make sure that you’re on the Driver tab and if you are not, just navigate to it then click the Roll Back Driver button to switch back to the previous version of the NVIDIA Drivers.
• Now restart your computer to successfully apply the changes made.

The “Unknown Hard” error that keeps on appearing in Windows 10 can put users in an unpleasant situation. This kind of error leads to the freezing of the taskbar, blackening of the screen, and sudden disappearance of the icons on the Desktop. And each time you try to open Windows, the system will only give you an error message saying that it’s a critical error and some applications like Start and Cortana won’t work. Upon analysis, it seems that the “sihost.exe” is not responding and that it is the one that’s causing the c000021a Unknown Hard error to pop up. Sihost.exe files represent the Shell Infrastructure Host which is an essential component in the Windows operating system. The Windows Shell Infrastructure Host is primarily responsible for handling some graphical elements of the operating system interface such as the Start menu and the taskbar transparency. And so if the Shell Infrastructure or Sihost.exe has stopped, has been removed, or corrupted, you will most likely have issues with the overall functionality of the Windows operating system and you’ll get the Unknown Hard error In addition, the ctfmom.exe Unknown Hard error may also occur due to incompatible drivers installed on your PC. Ctfmom is a process that identifies inputs such as handwriting, languages, and many more. It’s the one that controls the functions of background behavior. To resolve this issue, you need to first try to identify which application is the one that’s running the sihost.exe file. And if needed, you need to either update or reinstall or completely uninstall the problematic application.

Option 1 – Try to run the System File Checker

The SFC Scan or System File Checker, us a built-in utility in Microsoft Windows that can be found in the C:\Windows\System32 folder. This tool allows users to scan and restore any corrupted system files in Windows that might be causing the Unknown Hard error to appear. Before you use this tool, make sure to find out whether the sihost.exe on your computer is a Trojan that you have to remove or if it’s a file that belongs to a trusted Windows application. Once you have that sorted out, follow the steps below.

• Tap Win + R to launch Run.
• Type in cmd in the field and tap Enter.
• After opening Command Prompt, type in sfc /scannow

The command will start a system scan which will take a few whiles before it finishes. Once it’s done, you could get the following results:

1. Windows Resource Protection did not find any integrity violations.
2. Windows Resource Protection found corrupt files and successfully repaired them.
3. Windows Resource Protection found corrupt files but was unable to fix some of them.

Option 2 – Try to use System Restore

You can also try using System Restore. This is one of the ways you can use it to back up your PC. Since restore points are created automatically each week by System Restore, you can use System Restore to restore your computer back to an earlier good point in time.

Option 3 – Try to troubleshoot the error in a Clean Boot State

Putting your PC in a Clean Boot state can help you diagnose and troubleshoot the issues in your system. During this state, you can start the system with a minimum number of drivers and startup programs that will surely help you in isolating the root cause of the Unknown Hard Error.

• Log onto your PC as an administrator.
• Type in MSConfig in the Start Search to open the System Configuration utility.
• From there, go to the General tab and click “Selective startup”.
• Clear the “Load Startup items” checkbox and make sure that the “Load System Services” and “Use Original boot configuration” options are checked.
• Next, click the Services tab and select the “Hide All Microsoft Services” checkbox.
• Click Disable all.
• Click on Apply/OK and restart your PC. (This will put your PC into a Clean Boot State. And configure Windows to use the usual startup, just simply undo the changes.)

After putting your PC in a Clean Boot State, try creating a system restore point and see if the problem still occurs. Clean Boot troubleshooting is designed to help you isolate the problem. For you to execute a clean boot troubleshooting, you must do a couple of actions (the steps are given above) and then restart your PC after every action. You might have to disable one third-party app after the other to really isolate the issue. And once you’ve narrowed down the problem, you can either disable the third-party app that’s causing the problem or remove it. Note that you must switch your PC back into the Normal Startup mode after you’re done troubleshooting the problem. Here’s how you can do it:

• From the “Start” menu, go to System Configuration.
• After that, switch to the General tab and click the option for “Normal Startup”.
• Next, go to the Services tab and clear the checkbox for “Hide all Microsoft services”.
• Then find and click “Enable all” and if prompted, you have to confirm.
• Afterward, go to the Task Manager and enable all the Startup programs and confirm the action.
• Restart your PC when prompted.