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Fix Hello Errors 0x801c004d or 0x80070490

As you know, Windows Hello offers you quick access to computers since you can log in to your Windows devices three times faster compared to passwords with the help of the camera via Face recognition and fingerprint reader. This way, Windows Hello will recognize you right away. However, there are also times when you might encounter some problems when using Windows Hello. For one, if you are trying to add the PIN method to Windows Hello on your Windows 10 computer but you suddenly encountered an error code of 0x801c004d or if you are trying to use your existing pin and you encounter an error code of 0x80070490 along with an error message that says, “Not recognized”, then read on as this post will guide you on how you can fix both of these errors. Here is the complete content for both errors:

  • 0x801c004d – Unable to enroll a device to use a PIN for login”
  • 0x80070490 - Not recognized, Pin and fingerprint are no longer options for signing in”

If you got any of these two errors, there are several potential fixes you can check out to resolve them. You can try to check for any Windows Updates or create the PIN again or check the CNG Key Isolation Service. You could also try to reset the TPM or create a new User Account. For more information, follow the instructions provided below.

Option 1 – Try checking for any available Windows Updates

The first thing you can do is to check for any available Windows Updates. It is possible that your computer may be outdated and is the reason why you’re having troubles with Windows Hello. To check for Windows Updates, just go to Settings and from there, head over to the Update and Security section and click on Windows Updates located on the left pane, and then click on the Check for Updates option. Wait until the process of checking updates is completed and if it finds new updates, install it. After you install the new Windows Updates, check if you can now add the PIN on Windows Hello or not.

Option 2 – Try creating the PIN again

The next thing you can do is to create the PIN again by signing out and signing in again and then try creating the PIN once more. If this does not work, you can try restarting your computer and creating the PIN again. You could also try removing the PIN and then change it.

  • Remove the PIN by going to Settings > Accounts > Sign-in options.
  • From there, go to the PIN section and click on the Remove button.
  • You will be asked to verify your account to proceed in removing the PIN, enter your credentials.
  • Restart your computer and then set up a new PIN.
  • Once you’re done, restart your computer and check if the error is gone now.

Option 3 – Try checking the CNG Key Isolation Service

The CNG Key Isolation Service is the one that stores and uses long-lived keys in a secure process complying with the common criteria requirements and it is possible that the error could be related to this service. This service is hosted in the LSA processes and provides key process isolation to private keys and associated cryptographic operations as required by the common criteria. Thus, you need to check this service to see if it’s the one that’s causing the error.

  • Tap the Win + R keys to open the Run dialog box and type “services.msc” in the field and hit Enter to open the Windows Services Manager.
  • Next, locate the “CNG Key Isolation Service” and once you find it, double click on it to open its Properties box.
  • After opening its Properties, check its Startup type and select Manual. This is the default setting and if it is Disabled, then it’s no wonder why you’re getting errors with Windows Hello, thus, you need to enable it.
  • Once done, restart your computer and check if you can now add the PIN to Windows Hello. If you still get the error, then you might want to try setting the CNG Key Isolation Service from Manual to Automatic and then click on the Start button and see if it fixes the error or not.

Option 4 – Try to reset the Trusted Platform Module or TPM

You might also want to try resetting the Trusted Platform Module or TPM to fix the error. You can do this by opening Windows PowerShell and then executing the “Clear-Tpm” command. After that, check if the error is now resolved.

Option 5 – Try to create a new User Account

You could also try to create a new User Account on your Windows 10 computer to fix the Windows Hello error. Once you have created a new local user or administrator account in Windows 10, check if you are now able to add the PIN from this newly created user account.

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Option 1 – Use the System Configuration utility

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Option 2 – Try to update, rollback or disable related device drivers

Incompatible and outdated drivers can also cause computer malfunctioning or crashing as well as Blue Screen errors. To fix that, you can update, roll back or disable the device drivers in your computer.
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Option 3 – Use System File Checker

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  • Now restart your computer.

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1) Run the Blue Screen Online Troubleshooter

Open Control Panel, change the view setting to icons. Click Troubleshooting, and click “View all” in the tasks pane. Click “Blue Screen”. This opens the Blue Screen Troubleshooter.

2) Run Driver Verifier

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4) Scan memory for issues

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About Potentially Unwanted Applications

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What To Do If You Cannot Download Safebytes Anti-Malware?

All malware is bad, but certain types of malware do much more damage to your PC than others. Some malware sits in between your computer and the net connection and blocks some or all internet sites that you really want to check out. It will also block you from installing anything on your PC, especially anti-malware applications. So what to do when malicious software keeps you from downloading or installing Safebytes Anti-Malware? Although this type of issue will be tougher to get around, there are some actions you can take.

Install the antivirus in Safe Mode

In Safe Mode, you can adjust Windows settings, un-install or install some software, and get rid of hard-to-delete viruses. In the event the virus is set to load immediately when PC starts, shifting into this mode may well prevent it from doing so. In order to get into Safe Mode or Safe Mode with Networking, press the F8 key while the PC is booting up or run MSConfig and look for the “Safe Boot” options under the “Boot” tab. Once you’re in Safe Mode, you can try to install your antivirus program without the hindrance of the virus. Now, you can run the anti-malware scan to eliminate computer viruses and malware without any hindrance from another malicious application.

Download the antivirus software using a different browser

Some viruses might target vulnerabilities of a specific browser that block the downloading process. If you suspect that your Internet Explorer happens to be hijacked by a virus or otherwise compromised by cybercriminals, the best approach is to switch over to an alternate web browser like Chrome, Firefox, or Safari to download your chosen security software – Safebytes Anti-Malware.

Make a bootable USB anti-virus drive

Here’s another solution which is creating a portable USB anti-virus software that can scan your system for malware without the need for installation. Follow these steps to run the anti-virus on the affected PC. 1) Download Safebytes Anti-Malware or Windows Defender Offline onto a clean computer. 2) Plug the USB drive into the uninfected PC. 3) Double-click on the downloaded file to open the installation wizard. 4) Choose the drive letter of the flash drive as the place when the wizard asks you exactly where you would like to install the anti-virus. Follow the on-screen instructions to complete the installation process. 5) Now, transfer the pen drive to the infected PC. 6) Double-click the EXE file to run the Safebytes tool from the flash drive. 7) Press the “Scan Now” button to start the virus scan.

SafeBytes Anti-Malware - More Protection For You

These days, an anti-malware tool can protect the computer from different forms of online threats. But wait, how to choose the right one amongst various malware protection software that is available on the market? Perhaps you might be aware, there are lots of anti-malware companies and products for you to consider. Some of them are good, some are decent, while some will affect your computer themselves! You must be careful not to pick the wrong product, especially if you purchase premium software. When it comes to commercial anti-malware software options, many people opt for popular brands, like SafeBytes, and they are very happy with it. Safebytes is among the well-established computer solutions firms, which provide this all-inclusive anti-malware software. Using its cutting edge technology, this application can help you eradicate multiples types of malware which includes computer viruses, worms, PUPs, trojans, adware, ransomware and browser hijackers. SafeBytes has outstanding features when compared with various other anti-malware programs. Below are a few of the great ones: Real-time Protection: Malware programs aiming to enter the computer are discovered and stopped as and when detected by the SafeBytes active protection shields. It’ll examine your computer system for suspicious activity regularly and shields your personal computer from unauthorized access. Optimum AntiMalware Protection: Safebytes is built on the best virus engine within the industry. These engines can find and remove threats even during the initial stages of a malware outbreak. “Fast Scan” Features: SafeBytes’s high speed malware scanning engine lessens scan times and extends battery life. Simultaneously, it’ll effectively identify and remove infected files or any online threat. Web Filtering: SafeBytes provides instant safety rating to the webpages you are about to check out, automatically blocking harmful sites and to ensure that you’re certain of your online safety while browsing the internet. Lightweight: SafeBytes is really a lightweight tool. It use up an extremely small amount of processing power as it operates in the background therefore you will not observe any system performance difficulties. Premium Support: For any technical concerns or product support, you can obtain 24/7 professional assistance via chat and e-mail.

Technical Details and Manual Removal (Advanced Users)

If you don’t wish to use malware removal software and prefer to get rid of Chedot manually, you could possibly do so by going to the Windows Add/Remove Programs menu in the Control Panel and deleting the offending program; in cases of browser extensions, you may uninstall it by visiting the browsers Add-on/Extension manager. It’s also highly recommended to factory reset your browser to its default state to fix corrupt settings. To make sure of complete removal, find the following registry entries on your computer and delete it or reset the values accordingly. Please keep in mind that only advanced users should try to manually edit the system files mainly because deleting any single critical registry entry results in a major problem or even a system crash. Furthermore, certain malware keeps replicating which makes it tough to get rid of. You’re encouraged to do this procedure in Safe Mode.
Files: %APPDATA%\Microsoft\Windows\Start Menu\Programs\Chedot %PROGRAMFILES%\Chedot %USERPROFILE%\Documents\chedot.reg Registry: HKEY_LOCAL_MACHINE\ HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\App Paths\chedot.exe HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run value: Chedot HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run value: Chedot HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\RegisteredApplications value: Chedot.NSJA6BHDA3NCFCFMXW3QSCUYUQ HKEY_LOCAL_MACHINE\Software\Chedot HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.htm\OpenWithProgIds value: ChedotHTML.NSJA6BHDA3NCFCFMXW3QSCUYUQ HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.html\OpenWithProgIds value: ChedotHTML.NSJA6BHDA3NCFCFMXW3QSCUYUQ HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.xhtml\OpenWithProgIds value: ChedotHTML.NSJA6BHDA3NCFCFMXW3QSCUYUQ HKEY_LOCAL_MACHINE\SOFTWARE\Classes\ChedotHTML.NSJA6BHDA3NCFCFMXW3QSCUYUQ HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\Chedot.NSJA6BHDA3NCFCFMXW3QSCUYUQ HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\chedot.exe HKEY_LOCAL_MACHINE\SOFTWARE\RegisteredApplications value: Chedot.NSJA6BHDA3NCFCFMXW3QSCUYUQ HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.html\OpenWithProgids value: ChedotHTML.NSJA6BHDA3NCFCFMXW3QSCUYUQ HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.htm\OpenWithProgids value: ChedotHTML.NSJA6BHDA3NCFCFMXW3QSCUYUQ HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Chedot HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MediaPlayer\ShimInclusionList\chedot.exe HKEY_LOCAL_MACHINE\Software\Chedot\Microsoft\Windows\CurrentVersion\Uninstall..Uninstaller Chedot
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Taskbar is not visible in Remote Desktop
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.
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