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Windows requires a digitally signed driver

Device drivers are needed in order for the hardware and software to communicate in an operating system. Some of these drivers are digitally signed. These kinds of drivers are drivers that are signed by their issuing authority in a way that the end-user or any third party won’t be able to modify them. And there are times when you encounter an error that says, “Windows requires a digitally signed driver” when you try to install or update device drivers.

Driver Signing is the process of associating a digital signature with a driver package. Digital signatures are used in Windows device installations to verify the identity of the vendor providing the driver packages as well as to verify the integrity of the driver packages.

All the drivers you usually install on your PC from Windows Update, Original Equipment Manufacturers, or some other third-party driver download software and so on must be verified digitally by Microsoft through the digital signature. A digital signature is an electronic security mark that verifies the publisher for the driver and all the relevant information related to it. That’s why Windows won’t run a driver if it isn’t certified by Microsoft, be it a 32-bit or 64-bit system – this is called the Driver Signature Enforcement.

The only Kernel-mode drivers that Windows 10 will load are the ones that are digitally signed by the Dev Portal. However, the changes only affect the new installations of the operating system with Secure Boot on while the non-upgraded fresh installations would require drivers that are signed by Microsoft.

The “Windows requires a digitally signed driver” error indicates that the driver you are trying to update or install hasn’t been signed digitally by the issuing authority, preventing you from installing or updating it. To resolve this issue, you can try to update the drivers directly from the manufacturer’s site. You could also disable driver signing via Group Policy Editor.

Option 1 – Update the device drivers directly from the manufacturer’s site

The reason why you’re getting the “Windows requires a digitally signed driver” error in the first place is that you might have downloaded the drivers from external media. It could also be that the drivers didn’t update for some time now and the issuing authority changed its policies. Thus, you can try to update the drivers straight from the manufacturer’s website and install them. If this option didn’t work, then you’ll have to disable the driver signing or its recognition in Windows 10. Keep in mind that doing so is not advisable if you have to use the concerned driver.

Option 2 – Disable driver signing via Group Policy Editor

  • Tap the Win + R keys to open the Run utility and type “gpedit.msc” in the field and tap Enter to open the Group Policy Editor.
  • After that, navigate to this policy setting: User configuration > Administrative templates > System > Driver installation
  • Next, double click on the “Code signing for device drivers” entry located on the right pane to open its properties where you’ll see the following description:

“This setting determines how the system responds when a user tries to install device driver files that are not digitally signed. It establishes the least secure response permitted on the systems of users in the group. Users can use the System in Control Panel to select a more secure setting, but when this setting is enabled, the system does not implement any setting less secure than the one the setting established.

When you enable this setting, use the drop-down box to specify the desired response.

“Ignore” directs the system to proceed with the installation even if it includes unsigned files.

“Warn” notifies the user that files are not digitally signed and lets the user decide whether to stop or to proceed with the installation and whether to permit unsigned files to be installed. “Warn” is the default.

“Block” directs the system to refuse to install unsigned files. As a result, the installation stops, and none of the files in the driver package are installed.

To change driver file security without specifying a setting, use System in Control Panel. Right-click My Computer, click Properties, click the Hardware tab, and then click the Driver Signing button.”

  • Now select the radio button for “Enabled” and select Ignore from the drop-down menu under “When Windows detects a driver file without a digital signature”.
  • Then click on the Apply and OK buttons to save the changes made. This will get rid of the “Windows requires a digitally signed driver” error but take note that this will also make your system less secure.

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How to Fix Windows 10 Error Code 0x800705b4

Error Code 0x800705b4 - What is it?

Error Code 0x800705b4 is an error that will appear when the computer is not stable, and very critical system files will fail to respond or they will start going missing. This will happen when the computer is not being maintained properly. The problem should be solved immediately to avoid any further damage or loss of data. This error code may be regarded as one of the most severe computer problems that can present itself.

Common symptoms include:

  • There will be a failure to install updates and a display of the error message.
  • The Error Code 0x800705b4 will display itself.
  • After a system update, the computer will not be able to install new drivers.

Solution

Restoro box imageError Causes

Windows 10 update error 0x800705b4 can be caused when the user wants to update their windows system when important dll registries or files are missing or are corrupt. This will also happen when the user is trying to install or uninstall programs in a way that is wrong, or it may be infected with a Trojan virus. Additionally, this error code will be displayed when a PC's drivers are either outdated or installed the wrong way. There could be a registry error, a failure to update by the operating system, or even a device failure to update automatically.

Further Information and Manual Repair

There are several ways to resolve the appearance of error code 0x800705b4 on Windows devices. If you are not familiar with fixing error codes on a computer or are having trouble fixing this one, consider contacting a Windows technician to help with fixing the error. The computer must be run on administrator mode no matter which steps you are taking or which methods you are using. Depending on which version of Windows you are using, the steps for each method may differ slightly, but the basic process will remain the same.

Method One: Fixing it with updates

Start the computer in safe mode to begin troubleshooting for error code 0x800705b4. When the computer is starting up, press F8—this will enter the computer into safe mode.

You will now need to manually update your computer's outdated drivers. To do this, click on Start. Then, type in Device Manager into the search box to see if there are any outdated or corrupt issues with the drivers.

Method Two: Run an SFC scan

This will allow users to find files in Windows that are corrupt, damaged, or lost.

  • Start the Command Prompt. To do this, click Start and then type in cmd inside of the search box to see the icon.  Right-click and choose to Run as administrator. If asked, enter the password for the administrator.
  • When viewing the command prompt, type in “sfc/scannnow” and then press enter. This will be scanning all of the protected system files and will fix the corrupt files. Do not close the command prompt before it is done.

Method Three: System Restore

This is the most efficient way to fix any problem or system status. System backup is vital when performing this.

Click on the Start button, and then type in “system restore” inside of the search box. Right click on System Restore, and then choose Run as Administrator. This could also be found in the Control Panel. Now you will choose the time point in which to restore the system. You will be able to choose the recommended or specific restore based on the situation. Now you can review the restore point and then click Finish.

Method Four: For Windows 10

  • You may need to update the Windows Defender in the security center. To locate this, click Start, Settings, Update and Security, Windows Defender.
  • Go to the Windows Updates and click on Advanced Options. Click on the option that will get updates for more Microsoft products.
  • Restart the computer, and then check for updates again. This update process will be able to be done without a problem. When a message comes up that says “Your device is up to date” you will need to click Advanced Options once again and check for update options.
  • Check for updates one more time and now the proper updates should be able to be downloaded and installed properly.

Method Five: Use An Automated Tool

If you wish to always have at your disposal a utility tool to fix these Windows 10 and other related issues when they do arise, download and install a powerful automated tool.

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Configure Windows 10 to create Dump Files on Blue Screen of Death
If your Windows PC encounters an error, it will display a Blue Screen of Death or BSOD error which usually comes up for a fraction of second and creates some logs or Dumps Files as what other user prefers to call it and then boots your PC suddenly. This process usually takes place quickly that most users find it hard to get the error code and won’t probably be able to check what really went wrong with their PCs. This is where the dump files come in. They are stored internally in your computer and can only be accessed by an administrator. They are classified into 4 main types and in Windows 10 they are either:
  1. Complete Memory Dump
  2. Kernel Memory Dump
  3. Small Memory Dump (256 KB)
  4. Active Memory Dumps
Dump Files are useful as they could help you in resolving the problem and so you need to configure your Windows 10 PC to create them but first, you need to make a system restore point. This is essential as you are about to modify some system files as well as critical Windows 10 settings. There are two ways you can create Dump files – first is by modifying the settings in the Startup and Recovery and lastly is via the WMIC command line. Refer to the instructions prepared below to be guided on how you can create Dump files after any BSOD error using these options.

Option 1 – via Startup and Recovery

  • Type in “control panel” in the Cortana Search box and then click on Control Panel from the search results to open it.
  • After opening Control Panel, you need to make sure that you view the contents by their Category then click on the header link which is labeled “System and Security” or you could also right-click on the This PC icon and then click on Properties.
  • Next, select the Advanced system settings from the left panel. Once you do, a new and small window will pop up.
  • Under the newly opened window, look for the section called Startup and Recovery and then click on the Settings button.
  • And from the System Failure section, you can choose any option from the drop-down for Write debugging information such as:
    • None – this means that there is no dump file created by Windows
    • Small Memory Dump – this means that Windows will create a Minidump file on BSOD
    • Complete Memory Dump – this means that Windows will create a Complete Memory Dump file on BSOD
    • Automatic Memory Dump – this means that Windows will create an Automatic Memory Dump file on BSOD
    • Active Memory Dump – this means that Windows will create an Active Memory Dump file on BSOD
Note: The complete dump needs a page file that is allowed to be the size of the physical memory installed in your PC with a dedicated 1 MB of space for just the page header.
  • Now once you have selected the most suitable option for you, just click on OK/Apply and then exit.
  • Restart your PC to successfully apply the changes made.

Option 2 – via the WMIC command line

  • The first thing you need to do to create Dump files via the WMIC command line is to tap the Win + X keys combination or simply right-click on the Start button and then select the Command Prompt (Admin) option. You could also type in “cmd” in the Cortana search box and then right-click on Command Prompt from the results and select Run as administrator.
  • After that, type in any of the commands given below depending on your preferences so that your Windows 10 PC will be configured to create Dump Files:
    • No dump file: wmic RECOVEROS set DebugInfoType = 0
    • Small Memory Dump: wmic RECOVEROS set DebugInfoType = 3
    • Kernel Memory Dump: wmic RECOVEROS set DebugInfoType = 2
    • Complete Memory Dump: wmic RECOVEROS set DebugInfoType = 1
    • Automatic Memory Dump: wmic RECOVEROS set DebugInfoType = 7
    • Active Memory Dump: wmic RECOVEROS set DebugInfoType = 1
Note: A complete dump has to have a Page file which is allowed to be the size of the physical memory installed on your PC accompanied by a 1 MB space for just the page header.
  • Now type in “exit” in the Command Prompt to exit it.
  • Restart your PC to apply the changes made successfully.
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What is HEIF file format and how to use it?
High Efficiency Image File Format (HEIF) is a container format for individual images and image sequences. The standard covers multimedia files that can also include other media streams, such as timed text, audio, and video. A HEIF image using High-Efficiency Video Coding, HEVC, requires only about half the storage space as the equivalent quality JPEG. HEIF also supports animation and is capable of storing more information than an animated GIF or APNG at a small fraction of the size. HEIF files are a special case of the ISO Base Media File Format (ISOBMFF, ISO/IEC 14496-12), first defined in 2001 as a shared part of MP4 and JPEG 2000. Introduced in 2015, it was developed by the Moving Picture Experts Group (MPEG) and is defined as Part 12 within the MPEG-H media suite (ISO/IEC 23008-12). HEIF was adopted by Apple in 2017 with the introduction of iOS 11, and support on other platforms is growing.

HEIF files can store the following types of data:

Image items
Storage of individual images, image properties, and thumbnails.
Image derivations
Derived images enable non-destructive image editing and are created on the fly by the rendering software using editing instructions stored separately in the HEIF file. These instructions (rectangular cropping, rotation by one, two or three quarter-turns, timed graphic overlays, etc.) and images are stored separately in the HEIF file, and describe specific transformations to be applied to the input images. The storage overhead of derived images is small.
Image sequences
Storage of multiple time-related and/or temporally predicted images (like a burst-photo shot or cinemagraph animation), their properties, and thumbnails. Different prediction options can be used in order to exploit the temporal and spatial similarities between the images. Hence, file sizes can be drastically reduced when many images are stored in the same HEIF file.
Auxiliary image items
Storage of image data, such as an alpha plane or a depth map, which complements another image item. These data are not displayed as such but used in various forms to complement another image item.
Image metadata
Storage of EXIF, XMP and similar metadata which accompany the images stored in the HEIF file.
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Identify resource hogging applications
Resource hogging is a term when one single application or few of them are taking all system resources for themself causing extreme slow down in the computer and nonresponsiveness. It can be a very frustrating and time-consuming experience and it can cost you money if you can not finish work on time due to this effect. I believe that everyone has experienced at least one slowdown in their IT carrier because of resource-hogging applications and most users do not know how to deal with this. We are here to help you with this issue. Just to be aware that this method shown here is not a method to miraculously speed up your PC or anything similar, this is to be able to detect and recover from extreme slowdowns. Hardware components are still very important and if you can upgrade your computer if it is outdated, please do it because new applications will require a more modern system, and not any kind of tips and tricks will save you from outdated hardware.

Identifying resource hogging app

Now when we got that out of the way let's talk about slowdowns, it is no secret that sometimes an application has bugs and memory leaks that can cause this kind of behavior, and sometimes the application simply takes up too much memory for any other application to work normally. The most simple and straightforward way is to bring up a Windows task manager and inspect running applications and services. You can bring task manager by the key combination of CTRL + SHIFT + ESC If the system is in deep memory deficit you will have to wait for the task manager to open and show itself on-screen. Once opened, click on more details if that view is not opened by default. Once the view expands you will see all running applications with how much RAM memory have they taken and how much CPU they are using.

What to do with app?

Now you are presented with a choice on what to do with the problematic application. If you press the end task button on the bottom right, Windows will kill the application and its processes but any unsaved work inside the application will be lost and unrecoverable in most cases. Or you can try to remove smaller applications running to free up more memory and CPU in order for the computer to catch up. Any choice you make is up to you, but be very careful not to kill Windows essential service by mistake, that will cause immediate system instability with high chances of a system crash.
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Enable or disable Fast User Switching
When your computer is slow, you don’t have much choice but to wait until it gets done with a task at its own pace, albeit a slow one. So if you want to switch user accounts on your computer a couple of times daily, then a slow computer can get really irritating. What makes system processes slow is that the accounts have some programs or applications running and resources allocated to them. And besides, if your computer is already low on performance, it will kill the natural fluidic flow of the user. But worry not, for this post will guide you in switching user accounts with the help of some minor tweaks in your Windows 10 computer. To disable or enable Fast User Switching, you have two methods to do that using the Registry Editor and the Group Policy Editor. Either way, refer to the instructions laid out below.

Option 1 – Enable or disable Fast User Switching via Registry Editor

  • Tap the Win + R keys to open the Run dialog box.
  • After that, type “Regedit” in the field and tap Enter to open the Registry Editor.
  • Next, go to this registry key: HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionPoliciesSystem
  • Then right-click on System and select New > DWORD (32-bit) Value and name this newly created DWORD as “HideFastUserSwitching”.
  • Now double click on it. If you want to enable Fast User Switching, input “0” as the value, and if you want to disable it, input “1” as its value.
  • Restart your PC to successfully apply the changes made.

Option 2 – Enable or disable Fast User Switching via Group Policy Editor

Take note that this option will not work if you are using the Windows 10 Home edition since the Group Policy Editor does not come with Windows 10 Home. Refer to the steps below to enable or disable Fast User Switching using Group Policy Editor.
  • Tap the Win + R keys to open the Run dialog box and then type in “gpedit.msc” in the field and hit Enter to open the Group Policy Editor.
  • Next, navigate to this path inside the Group Policy Editor: Computer ConfigurationAdministrative TemplatesSystemLogon
  • Now double click on the configuration listing labeled as “Hide entry points for Fast User Switching” to open the configuration page.
Note: On the configuration page, you will see the following description:
“This policy setting allows you to hide the Switch User interface in the Logon UI, the Start menu, and the Task Manager. If you enable this policy setting, the Switch User interface is hidden from the user who is attempting to log on or is logged on to the computer that has this policy applied. The locations that the Switch User interface appears in the Logon UI, the Start menu, and the Task Manager. If you disable or do not configure this policy setting, the Switch User interface is accessible to the user in the three locations.”
  • From there, you can choose to enable or disable the Fast User Switching depending on your preferences. After you’ve selected, click OK and exit the Group Policy Editor.
  • Now restart your PC to apply the changes made successfully.
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Enable or Disable Automatic Encryption
You might be familiar with the Encryption File System or EFS algorithm if you rather keep your files and folders encrypted. Encryption File System is a built-in feature in Windows 10 which allows users to secure their important files. Although there is an alternative way for you to secure your data on your Windows 10 computer, you can’t ignore the fact that the main advantage of an Encryption File System over BitLocker is that the former can help you encrypt a particular folder rather than encrypting the whole hard drive partition. If you move a file inside a folder encrypted with the Encrypting File System it will automatically get encrypted. There are some users who like this feature but unsurprisingly, there are some that don’t. So if whether you want your files encrypted when you place them in an encrypted folder or if you want to keep it as it is, read on as to how you can do it either way. You can enable or disable automatic encryption of files moved to encrypted folders in Windows 10 using the Registry Editor or the Group Policy Editor. Before you proceed, make sure to create a System Restore Point first because the modifications you’re about to make in your computer might affect its overall functioning so if anything goes wrong, you can always undo the changes. Once you have that covered, refer to the options given below to enable or disable automatic encryption in Windows 10.

Option 1 – Enable or disable automatic encryption using Registry Editor

  • Press the Win key + R key at the same time to open the Run dialog box.
  • Then type “Regedit” in the field and press Enter to open the Registry Editor and if a User Account Control or UAC prompt appears, just click Yes to proceed.
  • After opening the Registry Editor, navigate to this key location: HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionPoliciesExplorer
  • Next, right-click on Explorer and select New > DWORD (32-bit) Value and then name the newly create DWORD to “NoEncryptOnMove” and press Enter to save it.
  • After that, double click on the NoEncryptOnMove DWORD and set its value to the following preferences:
    • 1 – Disable Auto Encryption of files moved to encrypted folders.
    • 0 – Enable Auto Encryption of files moved to encrypted folders.
  • Now close the Registry Editor and restart your computer to successfully apply the changes made.

Option 2 – Enable or disable automatic encryption using the Group Policy Editor

  • Press the Win + R keys to open the Run box and type “gpedit.msc” in the field and press Enter to open the Group Policy Editor.
  • After that, navigate to this path: Computer ConfigurationAdministrative TemplatesSystem
  • Next, look for the “Do not automatically encrypt files moved to encrypted folders” option and double click on it to set the policy. From there, you will see the following description:
“This policy setting prevents File Explorer from encrypting files that are moved to an encrypted folder. If you enable this policy setting, File Explorer will not automatically encrypt files that are moved to an encrypted folder. If you disable or do not configure this policy setting, File Explorer automatically encrypts files that are moved to an encrypted folder. This setting applies only to files moved within a volume. When files are moved to other volumes, or if you create a new file in an encrypted folder, File Explorer encrypts those files automatically.”
  • Now select one of the radio buttons below depending on your preference:
    • Not Configured or Disabled: Enable Auto Encrypt of files moved to EFS Encrypted folders.
    • Enabled: Disable Auto Encrypt of files moved to EFS Encrypted folders.
  • Then click on the Apply and OK buttons to save the changes made.
  • Exit the Group Policy Editor and restart your computer.
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a New browser from DuckDuckGo is coming
DuckGoGo a popular private search engine is releasing its first browser soon that is focused on privacy like its search engine. duckduckgo browserFrom the recent blog, Gabriel Weinberg, CEO of DuckDuckGo, has stated:
“Like we’ve done on mobile, DuckDuckGo for desktop will redefine user expectations of everyday online privacy,”
From everything that we have learned so far, the browser will be focused on making privacy super easy and simple, eliminating tons of different settings about privacy, and making the whole environment robust privacy protection all set by default. Settings will be applied in all fields, across search, browsing, email, and more. Gabriel also said that aim of the browser is not just a privacy browser, it is meant to be built and used as your everyday browser, for everyday use that protects your privacy as a bonus. One interesting thing that was stated is that browser itself is built upon OS-provided rendering engines instead of typical Chromium. DuckDuckGo says this approach will strip away a lot of the unnecessary cruft and clutter that's accumulated over the years in major browsers. Also, the company stated that when compared to Chrome, the DuckDuckGo app desktop is cleaner, way more private and that early tests have found out that it is significantly faster as well. Is this just corporate advertising or reality? We will see once the browser is released, or once it is released for public testing. Until then take care and happy holidays.
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Remove or join a Domain from Windows
As you know, networks that are domain-based are common in organizations and companies. These domain-based networks require multiple computers to be controlled through a single node known as a server. And the one that sets certain policies and restrictions on every system that is joined to the domain is the server administrator. So if you want to add your computer to a domain, you need to have the following information available:
  • The domain name
  • A user account name that’s registered in the active directory associated with the server
  • Windows Enterprise, Pro, or education version
In this post, you will be guided on how you can join or remove a domain. To get started, follow the given instructions below.

Option 1 – Joining a domain

  • First, you need to connect your computer to the network associated with the server since your computer and the server have to be on the same network.
  • Next, click the Start button and then click on the gear-like icon for Settings to open it.
  • After that, navigate to this path: Accounts > Access work or school.
  • Then click on Connect. This will open a new dialog box and from there, select the “Join this device to a local Active Directory domain” option.
  • Afterward, you will be asked to enter the username and password of your domain account.
  • Now select your Account type and when you proceed, you have to restart your computer. Your domain account should now be created.

Option 2 – Removing a domain

  • You need to open the Windows 10 Settings app.
  • And from there, go to this path: Accounts > Access work and school.
  • Next, select the account you want to remove from the domain and then click on Disconnect.
  • A prompt will then appear that says, “Are you sure you want to remove this account? This will remove your access to resources like email, apps, network, and all content associated with it. Your organization might also remove some data stored on this device”. Just click on Yes.
  • This will give you a Disconnect from the organization prompt.
  • Now click on Disconnect and select Restart now to restart your computer. This will complete the removal process of the domain.
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Microsoft Store not opening
When Windows 10 was introduced as an upgrade to Windows 7 and 8, a lot were thrilled because of its new features. One of the most interesting features that this has is the Microsoft Store. Just like in our tablets and smartphones, we can now download our favorite apps from a trusted source. Without the Microsoft store app, you can’t download any applications that you can use on your computer. But what happens if you can’t open your Microsoft Store or you accidentally uninstalled it? The most common error that users encounter when accessing Microsoft Store is the error code 0x80072efd. This error code appears when there is a problem with the internet connection. To resolve this, troubleshoot your modem by doing a simple power cycle. Turn off your modem and wait for a couple of minutes and turn it back on. It should refresh your internet. This works if there is really no problem on the Service provider’s side. Disable your Proxy server, if you are using one to access the internet. To do this, press Windows + R keys on your keyboard. Type “inetcpl.cpl” in the box and go to Connection. Next, click on LAN settings then tick on the box next to Automatically detect settings. Uncheck the box below Proxy Server Among the useful apps that came with the Windows 10 upgrade is PowerShell. It allows you to install and uninstall individual and all apps by using a series of commands. So you don’t have to worry if you can’t find your Microsoft Store or if you accidentally delete it. To access PowerShell, type in the word PowerShell into the search box found beside your Window Icon. Look for PowerShell from the results and right-click on it and hit Run as Administrator.

When you are in the PowerShell window, enter the command below:

Get-AppxPackage -allusers Microsoft.WindowsStore | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)AppXManifest.xml"
Another option is to download a Windows Update Troubleshooter. After you download it, open the troubleshooter tool and follow the steps. If you saved the file instead of directly opening it, go to the folder where the troubleshooter was saved and double click on the wu.diagcab file to rub the troubleshooter. One of the most interesting error codes that you might encounter when accessing the Microsoft store is error code 1. This particular error code is resolved by changing your PC’s region to the United States. To do this, go to Settings and look for Time & Language. Then go to region and language. Under the Country or region, choose the United States from the dropdown menu then restart your computer. The troubleshooting procedures above are the most common solution to resolve the problem on Microsoft Store issues but there are times that these procedures won’t work. If you are not confident to resolve this through the procedures mentioned in this article, there are so many tools online that you can download to help you out. It also helps to contact Microsoft or consult a technician to ensure that you are doing the correct procedure.
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How to Fix QTCF.dll Error

What is QTCF.dll Error?

Sometimes you may experience QTCF.dll error on your computer either during installation or while upgrading applications like iTunes and QuickTime. This error indicates that the installation or the upgrading of the desired application was unsuccessful. The QTCF.dll error is recognized by the Apple Support Community and they have provided a solution to fix this error easily.

Solution

Restoro box imageError Causes

QTCF.dll error occurs because the computer overloads with too much data which corrupts and damages registry files. And therefore the desired program fails to download and start on your PC. When this happens you see a pop up on your screen and the QTCF.dll error message that is usually displayed as:
  • QTCF.dll not found
  • QTCF.dll file is missing
Such message display hinders your ability to use iTunes or QuickTime applications on your PC. Furthermore, it also slows the performance of your system and you may encounter startup and shutdown problems. Therefore, it is advisable to repair the problem and fix the QTCF.dll error right away.

Further Information and Manual Repair

The good news is that you don’t need to go to a professional or be an IT expert in order to fix the QTCF.dll error. Since this error means that the installation or the attempt to upgrade the system was unsuccessful therefore you need to reinstall the fresh copy of the application. Here’s how you can easily fix the problem by yourself and install a fresh copy of the application: Step 1: First close all the applications running on your computer. Step 2: Now uninstall the application that you were trying to install such as iTunes or QuickTime.  To do this, go to the start menu, click on settings, control panel, and programs. Now click on the application you want to remove. Step 3: Once the application is uninstalled and removed from your computer, then restart it again. Step 4: Now download a fresh version of the application (iTunes or QuickTime) from Apple’s official website http://www.apple.com/quicktime/download/. Step 5: Run the installer. If reinstalling doesn’t work, then it is advisable to download the QTCF.dll repair tool. This repair tool will scan your PC for errors in seconds. Once the scanning is complete, click on the ‘fix all’ button to repair your computer. Once the error is fixed, restart your computer and then try reinstalling the desired application one more time.

A Word of Advice

For regular PC users, it is advisable to install an anti-virus and malware scanner and run it every time you use your computer. This helps you keep informed about the viruses or errors that your computer might be exposed to. And you can take timely actions before you experience file corruption and damage.
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