Hot to get rid of DiscoverAncestry from your PC

Error Code 0x80070004 on Windows 10 – What Is It?

Some users trying to upgrade from Windows 7 or Windows 8/8.1 reported experiencing installation rollback with error code 0x80070004. This error normally appears when the Computer Name is set to names that can’t be used for the computer. It’s also possible this error occurs if users or program files folder were redirected to a different partition.

Solution

Error Causes

The Error code 0x80070004 on Windows 10 is normally caused if any of the following were used as the Computer Name and the user tried to upgrade to Windows 10:

• System (or SYSTEM)
• SELF
• LOCAL
• Network

Failure to fix this error message might result in others, including error code  0xc0000001. 

Further Information and Manual Repair

If you don’t solve this error, you won’t be able to upgrade from Windows 7 or Windows 8/8.1 to Windows 10. Note that this error will continuously bring you back to the original OS unless fixed.

Please note that if you’re not confident in doing these steps, you might want to consider seeking the help of an expert or using an automated tool that will help fix this.

Here are a few methods to try.

Method 1: Check and Change the Computer Name

The most common cause of this error is if your computer uses any of the following reserved names:

• LOCAL
• System (or SYSTEM)
• Network
• SELF

These reserved names are not meant to be used as computer names. If this is what your computer uses and you try to upgrade to Windows 10, you will surely get this error. Check your computer name and if you see any of the reserved names, change it right away.

Changing Computer Name in Windows 8.1

If you’re trying to upgrade from Windows 8.1, you can change the name of the computer by following these steps:

• Step 1: Open the Start menu then simply type “rename computer”. After that, choose “Rename this computer”
• Step 2: A dialog box will open. Just click the “Change” button
• Step 3: A new dialog box will open. Type the new name. Click Apply then Ok.

Changing Computer Name in Windows 7

If you’re trying to upgrade from Windows, you can follow the steps below to change the name of your computer.

• Step 1: Go to the Start menu then on the Computer section, right-click the mouse and choose “Properties”.
• Step 2: A new dialog box will appear. Go to “Computer name, domain, and workgroup settings” then click “Change settings”. In case you’re asked for administrative access, make sure to grant it.
• Step 3: Find the “Computer Name” tab then click “Change”
• Step 4: Change the computer name and click Ok.

Method 2: Fix the “Users” directory issue

If the first method doesn't work, it probably means the computer name isn’t the cause of this error. Another reason why users experience Error code 0x80070004 when upgrading to Windows 10 is if the “Users” directory was relocated. So, when you try upgrading to Windows 10, the installer wasn’t able to find the user profiles on the “%systemdrive%”, where the current operating system is installed.

If you changed or moved any of the Users, Program Data, or Program Files folders, this will cause the error. Before you upgrade to Windows 10, you might be required to reset or reinstall your current operating system (Windows 7 or Windows 8.1).

If you haven’t made any changes or haven’t moved any of the mentioned folders, there’s a great chance that your users' profiles are corrupted. You can also reinstall your current operating system. However, you might want to check for the corrupter user profile first. To do this, follow the steps below:

• Step 1: Go to the Start menu and type System
• Step 2: Click System  then go to the Advanced tab
• Step 3: Go to Settings, which you’ll find under User Profiles

On the Users Profiles, make a copy of all the accounts somewhere. Sign out from the current user account then try logging in back using the accounts you’ve copied. For each account, you get an error, delete it. However, make sure that you don’t delete the UpdateUser and Administrator account ever.

After this is done, try upgrading your operating system to windows 10 again.

Method 3: Try a trusted and secured Automated Tool

If the above methods still not useful, you might want to rely on an automated tool. Find a secured and trusted tool. It will help fix this issue.

We have all experienced Windows errors over time and that can range from simple ones that will do very little to no harm and can be even system breaking making us lose our work or completely making the PC unusable. No one likes them but they happen, and usually, they happen once we least expect them.

No matter how frequent and unpleasant they might be there are ways to keep them at the minimum and even avoid them.

We will discuss steps that you can take in order to do this, simple tips and guides on how to keep your computer in top form and eliminate not just Windows, but any kind of errors altogether.

Keep your hardware clean

Believe it or not, some serious Windows errors like the dreaded blue screen of death can come from hardware issues not from the software at all. It is very important to keep your computer clean and with enough air flow so it can function properly.

Not so far ago we had an article about cleaning your hardware detailing what and how to do it. Here is a link to the article: https://errortools.com/windows/cleaning-your-pc/

Do not keep applications you are not using

Keeping applications on the drive might seem harmless but sadly that is not the case. Some applications have a certain impact on the system itself after all most of them are tweaking registry entries in Windows and sometimes having too many applications means an increased possibility of conflict over certain resources even when they are not running.

Some applications like adobe creative suite, for example, will have certain services always running in the background, and more of these kinds of applications you have, more services, more places for unexpected errors when they collide. Some of them will also install certain dependencies that could be problematic.

The general idea is: if you are not using it, uninstall it and you will be safer and more resilient to errors inside OS.

Do not use pirated or cracked software

Besides moral and law implications that using pirated or cracked software might bring you there are also certain other things that might be problematic. Certain "free" software might come packet with some problematic malware, for example, it is not uncommon for attackers to use some popular software to pack their malicious application with it.

Other things might be wrong and incomplete tweaking with application in order to bypass security and thus bringing some instability due to scripts needed to run in order to achieve this goal.

Keep your drivers updated

Errors can also come from old drivers or bad drivers, device manufacturers are not all-knowing and perfect, and sometimes drivers can wreak havoc on the system. Having updated drivers can minimize any kind of unexpected behaviors inside the operating system making it more stable and reliable.

You can check your driver version in the control panel inside the Windows OS and then compare it to the ones found on the manufacturer's site, if there are newer available it is recommended to download and install them,

Keep software updated

Applications can have bugs, and bugs can lead to certain errors both in the system and when using the app as well. It is in your best interest to get the latest patch or newer version of the software in order to avoid these unpleasant experiences.

Also, certain codecs and extensions that are installed directly in Windows can also have some unpredictable behavior, updating is the best solution to keep them in line.

Keep Windows updated

Same as with drivers and applications, Windows itself is not immune from bugs and some unpredictable issues. Luckily Microsoft is always working on fixes and features of Windows but in order to actually have benefited from that work, you will need to keep Windows updated. Sometimes a bad update can introduce some errors but you can always roll back to the previous and wait for them to fix everything and then download them all.

Check the health of your hardware regularly

Hardware components have their life cycle, more quality ones tend to last longer but eventually, they will reach the end of their lifecycle. There are a lot of testers for various components in your computer that can check different things and provide you with information about the state of your components.

If you are on Windows 11, Microsoft has included a basic health app inside OS, just type PC health check in search and start the app. For some more detailed information and advanced checks, you will have to use a custom application. There are plenty of them specialized for single components like RAM, SSD, etc. A simple google search with providing you with top results and most of them are free for personal use.

Remember, a faulty component or component that is reaching its life cycle can produce many errors inside the operating system.

Steam is one of if not the largest online store for the digital distribution of games on the PC platform. The game gets downloaded to your PC when you are planning to play it and its saves are synched in the Steam cloud. They get automatically downloaded when you install the game but you can also get your saves by directly downloading them from Valve's website in your browser. If Steam isn’t automatically downloading your old save games after you install a game, ensure Steam Cloud is enabled for that game within Steam. Locate the game in your Steam library, right-click it, and then select Properties. Click the Updates tab and ensure the Enable Steam Cloud synchronization option is checked for the game. If this option isn’t checked, Steam won’t automatically download your cloud saves. If you don’t see a Steam Cloud option for a game here, that game doesn’t support Steam Cloud. Not all games on Steam do, it’s up to each game developer.

Download the Files in Your Web Browser

Valve lets you download your Steam cloud save files via a web browser, too. You can download just your saved files without re-downloading the entire game. To find your saved files, visit Valve’s View Steam Cloud page in your web browser and sign in with your Steam account. You’ll see a list of games using your Steam Cloud storage. Locate the game in the list and click Show Files to see all the files for a game. Each game has a page showing all the files it’s storing in Steam Cloud, as well as the date they were modified. To download a file, click Download. Download all the save files for your game, and you’ll have a copy of its save games. This feature is especially useful for multi-platform games that don’t automatically synchronize save files between platforms.

When you run a program in Windows 10, error 0xc000012f may pop up, mentioning that the files and binaries you’re trying to run are corrupted. Error 0xc000012f means Bad Image, denoting that the program’s executable or one of the supporting modules is corrupt. Or there is probably a DLL mismatch. This error usually manifests itself after a windows update or after installation of some application, in order to fix it follow the steps below:

1. Perform SFC scan

   Press ⊞ WINDOWS + X to open the Windows menu From the menu choose command prompt (admin) In command prompt type sfc /scannow and press ENTER Leave the computer for the operation to be completed and Reboot your computer

2. Run DISM

   Press ⊞ WINDOWS + X to open the Windows menu From the menu choose command prompt (admin) in command prompt type: DISM.exe /Online /Cleanup-image /Restorehealth and press ENTER wait for the process to be finished and Reboot your computer

3. Reinstall application

   If this error has been popping up after the application install remove the installed application and install it again. There is the possibility that the application installer has by accident corrupted some files, reinstalling it might fix the issue.

4. Uninstall Windows update

   In some cases, Windows update can introduce this issue, go to Windows updates, into advanced options, and uninstall the latest update to see if this will fix the error.

5. Install Visual C++ Redistributable

   Go to the official Microsoft website and download C++ redistributable package and install it

6. Install new windows update

   If there is a new Windows update install, there is a chance that in the last update something went wrong and it is very likely that it was fixed in the last one.

WeatherBlink is an extension for google chrome, Mozilla, and internet explorer. It allows users to check out the weather anywhere in the world at any time. This might seem like a convenient feature, however, this toolbar also displays unwanted ads, hijacks your browser home page, collects personal data about your web surfing habits, visits, and clicks. From the author: Access local weather forecasts, weather radar, allergy, and pollen reports, and worldwide weather news – all in one convenient spot! This extension configures your New Tab page to WeatherBlink™ to provide these features.

Be prepared with instant weather forecasts. Access FREE and accurate weather forecasts with one click!

About Browser Hijackers

Browser hijack is a very common type of online fraud where your web browser settings are modified to make it do things you do not intend. Browser hijackers can do more than simply modifying home pages. It redirects you to the sponsored internet sites and inserts ads on the internet browser that helps its creator generate ad revenue. A lot of people assume that these kinds of websites are legitimate and harmless but that is not true. Nearly every browser hijacker poses an actual threat to your online safety and it is necessary to classify them under privacy dangers. In a worst-case scenario, your internet browser could be hi-jacked to open up your computer to a host of additional computer infections.

Indications of browser hijack

Below are some symptoms that indicate you’ve been hijacked: 1. the browser’s home page is changed 2. bookmark and the new tab are also modified 3. default online search engine is modified 4. you see unwanted new toolbars added 5. you notice a lot of pop-ups on your computer screen 6. web pages load very slowly and often incomplete 7. you’ve disallowed entry to particular web pages, for example, the website of an antimalware software firm like SafeBytes.

So how exactly does a browser hijacker infect a computer?

A browser hijacker could be installed on your PC when you go to an infected website, click an email attachment, or download something from a file-sharing website. They also come from add-on applications, also referred to as browser helper objects (BHO), browser extensions, or toolbars. Sometimes you may have mistakenly accepted a browser hijacker as part of a software program bundle (usually freeware or shareware). Typical examples of browser hijackers include CoolWebSearch, Conduit, RocketTab, OneWebSearch, Coupon Server, Searchult.com, Snap.do, and Delta Search.

Tips on how to remove browser hijackers

Certain browser hijacking can be easily stopped by discovering and eliminating the corresponding malware application from your control panel. However, certain hijackers are more difficult to find or eliminate as they might get themselves associated with certain crucial system files that enable it to work as a necessary operating-system process. You should think about carrying out manual repairs only if you’re a tech-savvy person because there are possible risks associated with fiddling around with the system registry and HOSTS file.

How One Can Eliminate Malware that is Blocking Websites or Preventing Downloads

Malware could potentially cause several different types of damage to PCs, networks, and data. Certain malware goes to great lengths to prevent you from downloading or installing anything on your PC, especially anti-malware applications. If you’re reading this, you probably have got infected by a virus that prevents you from downloading security software like Safebytes Anti-Malware. There are a few fixes you could try to get around with this issue.

Start Windows in Safe Mode

Safe Mode is actually a unique, basic version of Windows where just essential services are loaded to counteract malware as well as other problematic programs from loading. In the event the malware is blocking access to the internet and affecting your PC, launching it in Safe Mode enables you to download anti-virus and run a diagnostic scan while limiting possible damage. To start the computer into Safe Mode, hit the “F8” key on your keyboard right before the Windows logo screen comes up; Or after normal Windows boot up, run MSCONFIG, check Safe Boot under Boot tab, and click Apply. Once you restart into Safe Mode with Networking, you may download, install, as well as update anti-malware software from there. At this point, you could run the anti-malware scan to eliminate computer viruses and malware without any interference from another application.

Switch over to an alternate browser

Some malware may target vulnerabilities of a specific browser that block the downloading process. The most effective solution to avoid this problem is to pick a browser that is renowned for its security features. Firefox has built-in Phishing and Malware Protection to help keep you secure online.

Install antivirus on a thumb drive

To effectively remove the malware, you have to approach the problem of running an anti-malware software program on the affected computer from a different angle. Adopt these measures to run the anti-virus on the affected computer. 1) Download Safebytes Anti-Malware or Windows Defender Offline onto a virus-free computer system. 2) Plug the USB drive into the clean PC. 3) Double-click the Setup icon of the anti-malware program to run the Installation Wizard. 4) When asked, choose the location of the USB drive as the place in which you would like to store the software files. Follow activation instructions. 5) Unplug the flash drive. You may now utilize this portable anti-virus on the infected computer. 6) Double-click the Safebytes Anti-malware icon on the flash drive to run the program. 7) Press the “Scan Now” button to begin the virus scan.

SafeBytes Anti-Malware: Lightweight Malware Protection for Windows Computer

Do you want to install the best anti-malware software for your computer system? There are plenty of applications available in the market which comes in paid and free versions for Microsoft Windows computers. A few of them are good, some are ok types, while some will damage your computer themselves! You need to be careful not to select the wrong application, particularly if you purchase a paid application. On the list of recommended software programs is SafeBytes AntiMalware. SafeBytes has a very good track record of top-quality service, and customers seem to be very happy with it. SafeBytes can be described as a powerful, real-time anti-spyware application that is made to assist the common computer end user in safeguarding their PC from malicious internet threats. Using its cutting-edge technology, this application can assist you to get rid of multiples types of malware which include computer viruses, PUPs, trojans, worms, ransomware, adware, and browser hijackers. SafeBytes has a variety of features that can help you protect your PC from malware attacks and damage. Below are a few of the great ones: Antimalware Protection: With a critically acclaimed anti-malware engine, SafeBytes gives multi-layered protection which is intended to find and eliminate viruses and malware that are concealed deep in your computer’s operating system. Real-time Threat Response: SafeBytes provides round-the-clock protection for your PC restricting malware intrusions in real-time. It’ll regularly monitor your laptop or computer for hacker activity and also gives users sophisticated firewall protection. Quick Multi-threaded Scanning: SafeBytes’s high-speed malware scanning engine lessens scan times and extends the life of the battery. At the same time, it’ll effectively detect and get rid of infected computer files or any internet threat. Internet Security: Safebytes allots all sites a unique safety score that helps you to get an idea of whether the website you’re just about to visit is safe to browse or known to be a phishing site. Low CPU/Memory Usage: SafeBytes is well known for its minimal influence on computer resources and great detection rate of numerous threats. It works quietly and efficiently in the background so you are free to utilize your computer or laptop at full power all the time. 24/7 Customer Support: You will get 24/7 technical support to promptly resolve any problem with your security tool.

Technical Details and Manual Removal (Advanced Users)

To remove WeatherBlink manually, go to the Add or Remove programs list in the Control Panel and select the program you want to get rid of. For internet browser plug-ins, go to your browser’s Addon/Extension manager and select the plug-in you want to remove or disable. You will probably also want to reset your internet browser. Finally, examine your hard drive for all of the following and clean your registry manually to remove leftover application entries after uninstallation. Please remember that only experienced users should try to manually edit the registry because incorrect file deletion results in a major problem or perhaps a PC crash. Furthermore, certain malware is capable of replicating or preventing deletion.

Carrying out this malware-removal process in Safe Mode is recommended.

If you encounter the “Diskpart failed to clear disk attributes” error when you try to change the read-only state of a storage device using the Diskpart application and the request is denied, worry not for this post will give you a couple of fixes to resolve the problem. As you know, Diskpart is used for resolving read-only storage devices by changing their attribute via the command line. So if it is not able to change the attribute of the storage device, then you will most likely encounter an error such as this one. This kind of error is not uncommon and as long as there are no damaged physical attributes, you can resolve it right away. There are tons of reasons why you’re getting this error while using Diskpart, it could be that the storage device has a physical write-protected switch or the disk is hidden or has bad sectors. It could also be because the storage drive might be in RAW format or that you are running the Diskpart application without admin privileges. Whatever the cause may be, here are some options you can try to fix the problem but before you proceed, make sure that you log on to your PC as an administrator.

Option 1 – Check if there is a physical switch on the storage device

There are some USB devices and SD card readers that have a write-protected physical switch that disables all the writable options on the storage device and so if it is turned on, Diskpart won’t be able to change the disk attribute to writable. To check, simply look for the physical switch on both sides of the device and once you found it, make sure that it is toggled off and then plug the storage device back in then try running Diskpart once again.

Option 2 – Modify the WriteProtected key in the Registry Editor

Before you proceed, you have to create a System Restore Point first.

• Tap the Win + R keys to open Run and type “Regedit” in the field and hit Enter to open the Registry Editor.
• Next, navigate to the following path:

HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlStorageDevicePolicies

• After that, look for the “WriteProtect” registry entry which is located on the left side of the window, and then double click on it.
• Change its value to “0” and click OK to save the changes made and exit the Registry Editor.

Option 3 – Run CHKDSK to check the drive for errors

When it comes to some issues concerning the hard drive or removable devices, there is a utility in Windows that might help which is called “chkdsk”. This error check utility can help with several issues in the system including the “Diskpart failed to clear disk attributes” error.

• Tap the Win + S keys to open the Search box.
• Then type “command prompt” in the field and from the search results that appear, right-click on Command Prompt and select “Run as administrator”.
• After opening an elevated command prompt, copy and paste the following command and hit Enter:

CHKDSK [volume [[path] filename]] [/F] [/V] [/R] [/X] [/C] [: size]]

Note: In the command given above, “[/F]” will try to fix the system errors while “[/R]” will be the one to fix the bad sectors.

• Now if you are prompted to run CHKDSK after your reboot your PC, just tap Y and reboot your PC.
• If CHKDSK is not able to find any errors, tap the Win + E keys and navigate the access window. From there, right-click on the concerned drive and click on Properties.
• After opening Properties, click on the tab Tools and then click on the “Check” button under the Error-checking section.
• Wait until the process is completed and then restart your computer.

Option 4 – Clear the attributes on RAW

• Tap the Win + S keys then type “diskpart” in the field.
• Click the Diskpart application and if a User Account Control dialog box pops up, click Yes to proceed.
• After opening an elevated Command Prompt, type in the commands listed below and make sure to tap Enter right after you key in one command after the other.
  • list volume
  • select volume ‘n’ (In this command, you have to replace ‘n’ with the volume number of the drive)
  • format fs=fat32 quick (In this command you also have the flexibility to change the format to ‘ntfs’ or ‘exfat’)
• After executing the commands given, unplug the removable storage device and wait for a couple of seconds and then plug it back in.
• Now try any normal write operations and see if the error no longer appears.

Option 5 – Try checking the hardware components

On the other hand, it is also possible that the issue has something to do with a hardware problem and so you need to check the hardware components on your computer to determine that.

As you know, Windows programs depend on several operations to get executed and at the same time, there are also numerous parameters that have to be fulfilled for a program to get executed. However, based on some reports, there was an error when some users tried to run a program. This error says, “The application was unable to start correctly (0xc00007b)”. There could be various reasons why this error occurs but the main one is most likely due to an x86 application that is not compatible with the x64-based operating system. To fix this problem, you can run the Check Disk utility or reinstall the application or the Microsoft .NET Framework. You can also try reinstalling DirectX or replace the corrupted DLL file(s). For more details, refer to the given options below.

Option 1 – Try running the Check Disk utility

• In the Windows Search box, type “command prompt” and from the search results, right-click on Command Prompt and select “Run as administrator”.
• After opening Command Prompt, type this command and tap Enter: chkdsk <Partition Letter>: /f
• The command you entered will start to check for errors and fix them automatically. Else, it will throw an error message saying, “Chkdsk cannot run because the volume is in use by another process. Would you like the schedule this volume to be checked the next time the system restarts? (Y/N)”.
• Tap the Y key to schedule Disk Check the next time your computer restarts.

Option 2 – 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

Option 3 – Try to reinstall the program

There are times when some supporting module for your application under the hood could have messed up the application where you get the error. To fix this, you have to uninstall the program and then download its latest version from its official site and then install it again. Once you’re done, run the application and see if the error is fixed.

Option 4 – Run System File Checker scan

If reinstalling the program didn’t work, you can also try running the System File Checker or SFC scan to fix the error. System File Checker is a command utility built into your computer that helps restore corrupted files and missing files. Refer to the following steps to run it:

• Hit the Win + R keys 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.

• Reboot your computer.

Option 5 – Try running the DirectX Diagnostic Tool

Since the error has something to do with the DirectX Graphics APIs, you can run the DirectX Diagnostic tool to resolve the problem.

Option 6 – Try updating or re-installing DirectX

If the DirectX Diagnostic tool didn’t work, you can try to update or reinstall DirectX instead. This can help in fixing the problem because when you reinstall or update DirectX, it will replace the incompatible or corrupted components of DirectX from your computer.

If you are facing a missing sechost.dll error in your Windows 10, welcome, you have come to the right place to solve it and get back your computer in working order. Sechost.dll is a file that allows other programs to function and complete their tasks as well as control and change the behavior of other programs. The file is found in Windows subfolder System32, it is a completely safe file and should not be deleted. Sometimes however various other reasons can corrupt it or delete it. This guide will lead you to common solutions on how to get file back up and running.

1. Update device driver

   Have you installed a new device and all of a sudden you get the error message that Sechost is missing? Update device driver, it is possible that the file has been corrupted or replaced with an older version and therefore reported as missing. Update device driver to lastest version and issue should run away.

2. Re-register file via command prompt

   If Sechost got corrupted re-registering will solve the issue, press ⊞ WINDOWS + X and choose Command prompt (administrator), click on it. type regsvr32 sechost.dll and press ENTER Reboot your PC

3. Reinstall application

   Usually, Sechost gone bad or missing is due to the installation of another application that corrupts the file. Reinstall the application to try to solve errors. In order to properly reinstall the application first use the control panel to remove it completely from the system and then install it again, hopefully, this time correct version of Sechost.dll will be installed in the system.

4. Check your hard drive

   In some cases, a hard drive malfunction can cause several files to be corrupted or gone missing. To eliminate hard drive malfunction run check disk from Windows on C drive to check it and find if there are any errors.

5. Uninstall Windows update

   Same as with some application, even Windows update could corrupt some files due to update not being properly downloaded. Try uninstalling the latest update and revert to the previous Windows state, then update it again.

One of the most useful utilities for advanced users in Windows is the Windows command line or Command Prompt. It is efficient in fixing system files, checking the disk for errors as well as other intensive tasks that are made convenient using this. One of the tasks you can carry out using Command Prompt is repairing the Windows bootup process if it encounters any issues. However, if you tried running the “bootrec/fixboot” command and you receive an error message saying, “Element not found”, read on as this post will guide you in fixing this error. This kind of error in the command line could be due to a damaged BCD or MBE, inactive system partition, or it could also be that there is no drive letter being assigned to the EFI partition. Whichever the case is, here are some possible fixes that should help you resolve the problem.

Option 1 – Try to repair BCD

As mentioned the error could be caused by a damaged BCD and so to fix the problem, you need to repair BCD by following these steps:

• First, make sure that you have a bootable Windows 10 USB drive with you and use it to boot your computer.
• Once you’re on the Welcome Screen, click on Next.
• After that, click on Repair your computer located at the bottom-left portion of the window.
• Then select Troubleshoot > Advanced Options > Command Prompt.
• After you open the Command Prompt window, execute the following command:

bootrec /fixboot

• Afterward, enter the next command below to rename the BCD file:

ren BCD BCD.bak

• Next, type the following command and make sure to replace “b:” with the letter of your bootable drive attached to your computer.

bcdboot c:Windows /l en-us /s b: /f ALL

• Now, wait until the process is completed and restart your computer to successfully apply the changes made.

Option 2 – Try assigning the drive letter to the EFI partition

• Tap the Win + X keys or right-click on the Start button and click on Command Prompt (Admin) to open Command Prompt with admin privileges.
• Then type the following command to start the Diskpart utility:

diskpart

• After that, if you receive a UAC prompt, just click on Yes to proceed.
• Next, type the following command to list all the volumes created on your PC including both types of partitions that are visible to a normal user in the File Explorer as well as the ones created by Windows 10 by default which helps it in storing the boot files and other important system files:

list volume

• Now type the following command to select the desired volume:

select volume number

• Then type the following command to assign a letter to the selected volume:

assign letter=<LETTER>

Note: Make sure to replace “<LETTER>” with the letter you want to allocate to that partition. Afterward, it will assign a letter to the selected volume.

• Reboot your PC to apply the changes made.

Option 3 – Try setting the System Partition to Active

Like the first given option, you also have to make sure that you have a bootable Windows 10 USB drive before you proceed to set the System Partition to Active. Once you have it covered, refer to these steps:

• Boot your computer using the bootable Windows 10 USB drive.
• Next, click Next when you get to the Welcome Screen.
• Then click on Repair your computer located at the bottom left part of the window and select Troubleshoot > Advanced Options > Command Prompt.
• After opening Command Prompt, type the following command and hit Enter to start the Diskpart utility. It is a command line-based utility just like Command Prompt but has a UAC prompt once you provoke it. So if you encounter a UAC prompt, just click on Yes to proceed.

diskpart

• Now type the following command:

list disk

• From there, select your primary disk by typing the following command:

select disk number

• After that, list all the partitions on the selected disk by entering the following command:

list partition

• The command you just entered will list all the partitions created on your PC including both types of partitions that are visible to a normal user in the File Explorer as well as the ones created by Windows 10 by default which helps it in storing the boot files and other important system files.
• Now type the following command to select the partition that is usually around 100 MB in size:

select partition number

• Finally, type the following command to mark the partition active:

active

• Then type the “exit” command to exit the disk part utility.

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.