How to Fix Error 421

A lot of users lately reported getting an error that says, “The application has failed to start because its side-by-side configuration is incorrect”. This kind of error can pop up when you try to open a number of programs, regardless of their origin, the developer, and compatibility. Here’s the full context of the error message:

“<PATH OF THE EXECUTABLE FILE>, This application has failed to start because its side-by0side configuration is incorrect. Please see the application event log or use the command-line sxstrace.exe tool for more detail”.

This kind of problem has something to do with the C++ runtime package in the background. It could also be related to an error for a registry value. Whatever the cause is, you can fix this error with the help of some suggestions provided in this post. You can try to reinstall the application or check the registry setting or reinstall the suitable Visual C++ Runtimes or re-enable the Microsoft .NET Framework. For more details, refer to the instructions given below.

Option 1 – Try to reinstall the application

There are times when some supporting module for your application under the hood could have messed up the application. And so to fix that, you need to uninstall the concerned application and then try reinstalling it again. Once you’re done, check if it fixed the problem or not.

Option 2 – Try to change the Registry setting

• Tap the Win + R key combination to open the Run dialog box.
• Then type “Regedit” in the fields and tap Enter to open the Registry Editor.
• Next, navigate to this registry key: Computer HKEY_LOCAL_MACHINE SOFTWARE Microsoft Windows NT CurrentVersion SideBySide Winners x86_policy.9.0.microsoft.vc90.crt_1fc8b3b9a1e18e3b_none_02d0010672fd8219 9.0
• From there, look for a String value named “default” and double click on it.
• After that, change its Value data to match the one as the third value in BINARY.
• Now restart your computer to successfully apply the changes made.

Option 3 – Try reinstalling the appropriate Visual C++ Runtime

• You need to open the Event Viewer first by searching for it in the Windows Search box.
• After opening Event Viewer, look for the error events that are sourced by SideBySide.
• Next, look for the actual Visual C++ Runtime module that’s causing the error.
• Now download the module from the official website of Microsoft Support and then install it and see if it fixed the problem.

Option 4 – Re-enable the Microsoft .NET Framework

You could also try to disable the Microsoft .NET Framework then enable the latest version of the .NET Framework on your PC and check if the error is fixed.

Error Code 0x8007007b – What is it?

This error code occurs when users fail to activate their Windows operating system. It is one of the more popular Windows error codes since it affects many versions of Windows including Windows 7, Windows 8.1, and Windows 10. Error code 0x8007007b has common symptoms which include the following:

• Inability to activate a Windows installation
• Message box highlighting error code 0x8007007b

Solution

Error Causes

Error code 0x8007007b in Windows 8.1 usually results due to one or more main clauses. Windows 8.1 users may experience this error due to the use of volume-licensed media. The error code may also arise if the activation wizard is unable to connect to Key Management Service (KMS) host computer or if corrupted system files are present on your computer.

Further Information and Manual Repair

Windows error codes such as Error code 0x8007007b can be a complicated issue, requiring the use of technical knowledge and skills. For this reason, we have listed instructions in the simplest of forms to enable even average users to successfully complete manual repair methods that will resolve error code 0x8007007b.

The same approach has been applied to all our error code solutions. See also Error Code 0x00000024 and Error Code 0x80004005.

Below are the two main methods for correcting this issue.

Method One: Use Multiple Activation Key (MAK) to Activate Windows

This method involves the use of a Multiple Activation Key (MAK) instead of the Key Management Service (KMS) to activate the Windows operating system you intend to use on your PC. This manual repair method requires the use of Command Prompt so ensure you follow the instructions provided carefully so as to avoid the risks of causing harm to your system.

• Step one: Select Windows log key + X.
• Step two: Click Command Prompt, then Admin
• Step three: Type in admin password if Command Prompt requests it
• Step four: Type slmgr -ipk followed by the MAK product key. Note that the product key should have 25 characters with dashes between them like this xxxxx-xxxxx-xxxxx-xxxxx-xxxxx

Attempt to activate your Windows installation once you’ve completed the exact instructions above. If you are unable to complete this process, consider getting help from a Windows repair technician or simply move to the next manual repair method listed below.

Method Two: Run System File Checker

System File Checker (SFC) enables Windows users to scan and repair errors or corruption on system files. Since such errors within your system files can cause error code 0x8007007b to occur, follow the steps below to fix this error code.

• Step One: Go to Start and type Command Prompt or CMD.
• Step Two: Run as Administrator
• Step Three: Type sfc /scannow with a space between “sfc” and “/scannow”.

The System File Checker tool will begin scanning your machine for corrupted or missing files in need of repair. If these files are found on your system, the tool will repair and replace them. Once this is done, restart your computer then check to see if you can now activate your Windows operating system.

Method Three: Use an Automated Tool

If you wish to always have at your disposal a utility tool to fix these Windows 8 and other related issues when they do arise, download and install a powerful automated tool.

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.

Ehshell.exe Application Error - What is it?

Ehshell.exe is a type of .exe (executable file). This file functions as an essential component of the Microsoft Media Center.  By default, it is located in a subfolder of C:\Windows. Ehshell.exe application error is an error code that pops up when tasks in the Media Center freezes. The Ehshell.exe application error is usually displayed on the screen in the following format:

“ehshell.exe – Common Language Runtime Debugging Services Application has generated an exception that could not be handled. Process id=0xa18 (2584), Thread id=0xa24 (2596).”

Solution

Error Causes

Ehshell.exe application error is triggered when PC users perform repetitive tasks in Media Center on a Windows XP Media Center Edition. The computer stops to respond and the error message is displayed. This error occurs if users perform one or more of the following repetitive tasks in the Media Center:

• Repeated resize, restore and minimize the Media Center Window
• Schedule TV shows to record
• Repeatedly change the channel while Media Center is in a window
• Ehshell.exe file corruption due to malware infection or registry issues

Though this is not a fatal error, to avoid any kind of inconvenience, it is advisable to fix the error right away.

Further Information and Manual Repair

To fix the ehshell.exe application error on your system, you don’t have to hire a professional and spend hundreds of dollars on repair. Here are some of the best and most effective do-it-yourself methods that you can try to resolve this issue on your PC immediately.

Method 1 - Install the Latest Service Pack for Microsoft Windows

To repair the issue, install the latest Windows service pack. A service pack is basically a Windows update, often combines previously released updates that help make Windows more reliable. These are offered free of charge on Microsoft’s official website.  To get started, simply log on to Microsoft’s official website and download the latest service pack compatible with your Windows version. The installation process may take 30 minutes to install. And you will be prompted to restart your PC about halfway through the installation process. Once the Windows Service Pack is installed, the ehshell.exe application error will be fixed. If the error still persists, then try method 2.

Method 2 - Scan for Malware

Ehshell.exe application error may also appear on your PC due to malware infection. Malware programs like viruses, Trojans, and worms deliberately give their malicious processes similar .exe file names, so it is hard to identify the malware. In such an event, it is advisable to download a powerful antivirus and scan your entire PC. Run it to remove all the hidden malware programs on your system. Once malware is removed, the ehshell.exe application error will be resolved.

Method 3 - Clean Registry

Sometimes .exe files can also get corrupt when the registry gets overloaded with unnecessary and obsolete files. If this is the underlying reason for the error code occurrence then it is advisable to download Restoro. This is a multi-functional and user-friendly PC Fixer deployed with a registry cleaner. It removed all the unnecessary files, cleans and repairs the registry in seconds thereby fixing all registry-related errors. Click here to download Total System Care and resolve the Ehshell.exe application error on your PC.

Windows 11 is released and its adoption goes slower than Microsoft would like but nevertheless, it is slowly getting adopted, especially among new computers. Windows 11 has brought us a new modern look of OS but if you would like to personalize it a little more you can. Follow the guide on various things that you can change inside Windows 11.

Personalize list of recently added apps, opened items, folders

The recommended section that shows recently added apps and recently open items can be turned off and hidden now to be shown. In order to do this follow these steps:

1. Open Windows Settings by pressing WINDOWS + I
2. Click on personalization in the sidebar
3. Click on START and go through the options
4. Turn OFF switch beside recently accessed files
5. Additionally, you can also change which folders appear on the Start menu.

Remove apps or change app order on the Start Menu

To remove application not to be shown in the Start menu at all follow this simple guide:

1. Right-click on app
2. Choose unpin
3. To place the application on Start click on All Apps, right-click on the app and choose Pin to Start
4. To drag and rearrange apps, simply click on them and drag them to the new place.

Change the Start Menu location

When Windows 11 was first released Start Menu could only be located in the middle of the screen but thanks to plenty of backlash from users now it is possible to move it on a more traditional left side.

1. Press WINDOWS + I to open the settings app
2. Click on Personalization
3. Look for taskbar behaviors
4. Inside taskbar behaviors look for Taskbar alignment
5. Change alignment to left

Change the Start Menu color

In order to change the color of the Start Menu follow the next steps:

1. Open Settings app
2. Go to personalization settings
3. Go to Colors
4. Switch to custom
5. Under accent color pick a color you like or make your custom one.

Recently, several users reported an issue on their Windows 10 computers where the taskbar is not visible when they tried to connect to a computer via Remote Desktop Protocol or RDP. The Remote Desktop Connection feature uses the RDP which allows users to access a computer remotely. This is actually different from the taskbar being hidden automatically until the pointer hovers on it since, in this scenario, the taskbar is completely not accessible which makes using the remote computer entirely difficult, if not impossible. There are several suggestions you can check out to resolve this problem, you can try to restart the process of Windows Explorer via Task Manager or you could clear the cache for multiple processes. You could also try to reinstall the Shell Experience components or show the local taskbar in the Remote desktop. Moreover, you could also try to update, uninstall or roll back the display driver/graphics card driver. For more details, refer to each one of the options given below.

Option 1 – Try to restart the Windows Explorer process

The first option you have to try to fix the problem with the taskbar is to simply restart the Windows Explorer process in the Task Manager.

• Tap the Ctrl + Shift + Esc keys to open the Task Manager.
• Next, go to the Processes tab and find the process of Windows Explorer.
• Once you find it, right-click on it and select Restart to restart its process.
• After that, restart your computer and see if you can now see the Taskbar.

Option 2 – Try clearing the cache of multiple processes

The next thing you can do to resolve the problem is to clear the cache of many processes in your computer. To do so, follow these steps:

• Open the Notepad app and paste the following content in the text area:

@echo off taskkill /f /im explorer.exe taskkill /f /im shellexperiencehost.exe timeout /t 3 /NOBREAK > nul del %localappdata%PackagesMicrosoft.Windows.ShellExperienceHost_cw5n1h2txyewyTempState* /q timeout /t 2 /NOBREAK > nul start explorer @echo on

• After that, tap the Ctrl + S keys to save the changes you’ve made in Notepad and select the “All files” as its file type, and then name it “CacheClearTWC.bat”.
• Next, go to the location where you saved the file using File Explorer and then run it. This will run a couple of batch scripts which will clear the cache of multiple processes in the system.
• Tap the Win + X keys and select the “Windows PowerShell (Admin)” option to open PowerShell as admin.
• Next, execute this command in the command line: Get-appxpackage -all *shellexperience* -packagetype bundle |% {add-appxpackage -register -disabledevelopmentmode ($_.installlocation + “appxmetadataappxbundlemanifest.xml”)}
• After the command has been executed, this will reinstall the Shell Experience components and should fix the problem with the taskbar.

Option 4 – Update, uninstall or rollback the Graphics card drivers

• First, boot your computer into Safe Mode.
• After that, tap the Win + R keys to launch Run.
• Type in MSC into the box and tap Enter or click OK to open the Device Manager.
• After that, a list of device drivers will be displayed. From there, look for the Display Adapters and click on them.
• After that, right-click on each entry under the Display Adapters and select the “Uninstall Device” option from the menu.
• Now restart your computer.
• After restarting your computer, go to the Settings app and Check for Updates in the Windows Update section.

Note: You also have the option to go directly to the website of your graphics card manufacturers like NVIDIA, Intel, or AMD and go to the section called Drivers then check if there’s a new available update – if there is, download and install it.

In case you don’t know, Windows 10 actually allows users to set the Keyboard Repeat Rate and Repeat Delay. Both of these terms are interrelated and when you make active, any text field or an editor and then press and hold a single character key, it will quickly type the character for the first time and will show delay until the second and later characters appear. This is what you call the Keyboard Repeat Delay. On the other hand, the rate at which the later character appears is known as Keyboard Repeat Rate. There are two ways you can set the Keyboard Repeat Rate and the Keyboard Repeat Delay on Windows 10. The first one is using the Keyboard Properties while the second one is using the Registry Editor.

Option 1 – Set up Keyboard Repeat Rate and Repeat Delay via Keyboard Properties

• First, tap the Win + R keys to open the Run dialog box and type in “control keyboard” in the field, and hit Enter to open the Keyboard Properties.
• From there, you can use the slider to make the respective options for both Keyboard Repeat Delay and Repeat Rate shorter or whatever you prefer them to be.
• You should also see a text field in the mini window where you can test out your preferences. Once done, click on the Apply and OK buttons to save the changes made.

Option 2 – Keyboard Repeat Rate and Repeat Delay via Registry Editor

• Tap the Win + R keys to open the Run utility and type “Regedit” in the field and then hit Enter to open the Registry Editor.
• Next, navigate to this registry path: HKEY_CURRENT_USERControl PanelAccessibilityKeyboard Response
• From there, you can set your own value for both the AutoRepeatDelay and AutoRepeatRate registry keys so that you can set the Keyboard Repeat Rate and Repeat Delay in Windows 10.
• Once you’re done, exit the Registry Editor and restart your computer to save the changes made.

The first major update for Windows 11, 22000.65 has brought some bug fixes and some new features. The previous update was just a bunch of small fixes but this time Microsoft has brought much more with this one.

Bug and security fixes:

• Patch for the PrintNightmare vulnerability.
• Taskbar icons not displaying after you rotate the screen back and forth.
• Date and time not following format settings.
• Contrast issues with File Explorer title bar
• Search dropping the first keystroke when you press the Windows key and type
• Blurry windows in ALT + Tab

Besides bug and security fixed newest update has also brought us some functional changes:

• The start menu can no longer be moved from center
• A search box appears at the top of the Start menu.
• Taskbar appears on secondary monitors.
• The refresh option appears on the jump list when you right-click the desktop. It was on the "Show more options" list before.
• New look for certain dialog boxes such as "battery low" or "display change"
• New snap layouts for portrait mode screens.
• Option to troubleshoot sound problems when you right-click the volume icon.
• Power mode settings on Power & battery settings menu.
• Right-clicking .ps1 files offers a "Run with PowerShell" option.
• New GIFs in the emoji panel in China

Honestly, I really like a search box on top of the start menu but really dislike the option to move it to left, I am sure that there are a lot of users who would feel more like at home if they could still move and set Windows to function and work how they want. It is very strange to me that Windows 10 was made to be so user-focused and been able to be user specific and Windows 1 takes most of these things away. I am not sure why Microsoft is going this way but I cannot really see how moving the taskbar on left is a programming issue or why it is wrong for example.

Windows comes with a built-in backup solution. However, if it failed because of an internal error, you will encounter an error message saying, “The backup application could not start due to an internal error, Server execution failed (0x80080005)”. When you get this kind of error, it means that it did not start and the process failed with a Server execution error. If you got this kind of error worries not for this post will guide you in fixing the problem in your Windows 10 computer. The Windows Backup service is an excellent feature in Windows that only works on the NTFS file system and if you want to use this make sure that you have formatted your files system to NTFS. It is performed by the Volume Shadow Copy, all you have to do is right-click on any folder and if you see the “Previous versions” option, this means that a backup process runs from time to time and can bring back old files when needed. To resolve the “The backup application could not start due to an internal error”, here are two suggestions you can check out.

Option 1 – Check if the Volume Shadow Copy service is running and restart it

The first thing you need to do is check if the Volume Shadow Copy service. To do that, refer to the following steps:

• Click on Start and type “cmd” and right-click on Command Prompt from the search results.
• Then select the “Run as administrator” option to open Command Prompt with admin privileges.
• After that, type “net stop sdrsvc” and hit Enter to execute the command in stopping the Volume Shadow Copy service.
• Next, type the “net start sdrsvc” command and hit Enter to start the service again.

Note: You can also restart the service using the Windows Services Manager.

• In the Cortana search box, type “services” and click on the Services icon to open the Services Manager. Alternatively, you can also tap the Win + R keys to launch the Run prompt and then type “services.msc” in the field and hit Enter to open the Services Manager.
• From there, look for the Volume Shadow Service (sdrsv) from the list of services. Its Startup type should be set to Manual by default.
• Restart the service and if you don’t encounter any error while you turn it on, re-run the backup service and see if the backup process runs successfully.

Option 2 – Try to run the Volume Shadow Copy Service in a Clean Boot State

If the first option didn’t work and the service still keeps on failing even though the service is running, you can try putting your computer in a Clean Boot State and then try to run Windows Backup again.

• 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.)
• Now try to run the Volume Shadow Copy service again and see if the process goes smoothly.

Note: You might also want to delete all the files in the backup solution if you want to start fresh with the backup solution. Just go to C:/System/Volume/Information/Windows Backup and take ownership of the folder. After that, make sure to stop the Volume Shadow Copy service and then delete all the files inside it.

Windows 10 has a pre-installed Weather app that offers the local weather information, forecast, temperature gradient, historical data, multiple locations, and many more. It can be handy especially if you tend to check on the weather. However, if you are one of those users who barely use this app, you have the option to uninstall it from your computer and that’s exactly what we’re going to do in this post. There are several methods to uninstall the Weather app in Windows 10. You can uninstall it via Settings or Start Menu or even using a command in Windows PowerShell. Note that uninstalling the Weather app does not affect the functionality of your Windows 10 computer by any means so you shouldn’t worry about uninstalling it. To get started, follow the instructions provided below.

Option 1 – Uninstall the Weather app through Settings

The first option you can try to uninstall the Weather app is through Settings. It’s a very simple process so you wouldn’t have any trouble following it.

• First, click on the Start menu and go to Settings.
• From there, select System > Apps & Features.
• After that, wait until the list of apps is opened, and then look for the Weather app and click on it.
• Next, click on Uninstall in the given menu to uninstall the Weather app from your computer.

Option 2 – Uninstall the Weather app through the Start Menu

Another simple way to uninstall the Weather app is through the Start Menu. It only takes a right click and there are actually two ways to go about this – one is new with the recent feature update of Windows. How? Refer to these steps:

• Click on the Start button and type in “weather” and right-click on the Weather app which appears in the list.
• Next, click on the Uninstall option. This will uninstall the Weather app.
• You can also use the other uninstall option which you can find on the right side of the list that also shows other quick action for the app.

Option 3 – Uninstall the Weather app through a command in Windows PowerShell

• Tap the Win + X key combination and click on the “Windows PowerShell (Admin)” option to open PowerShell with admin privileges.
• After that, execute the following Remove App package command for the Weather app to uninstall it.

Get-AppxPackage Microsoft.BingWeather | Remove-AppxPackage

• Once done, it will remove the Weather app from your computer.