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How to Fix Error 0x0000605 in Windows

Recently, some users reported not being able to boot up their Windows 10 computers. And during the startup phase, at some time, the bootup sequence is halted with a Recovery error along with an error message saying, “Your PC/Device needs to be repaired” with an error code of 0x0000605.

This kind of error message indicates that Windows was not able to verify the digital signature for the file as the signing certificate or it could be that it has expired. To resolve this error, you can follow the potential fixes given below and see if you stumble upon a fix that might work out for you.

Option 1 – Change the Date & Time settings in the BIOS

Some users reported that they were able to fix the error by changing the Date & Time settings in the BIOS. Upon checking, they saw that in their BIOS settings, the date was off several years. As a result, the incorrect date and time settings end up ticking the system into believing that the Windows build has expired long before the actual expiration date.

You can check if the error pops up due to the same reasons by accessing the BIOS settings. To do so, you have to tap the Boot key that’s associated with your motherboard manufacturer during the initial startup phase. After that, you can search for a particular boot key online or you can also tap keys like F2, F4, F8, F10, F12, and the Delete key.

Once you’re able to access the BIOS settings, locate the Date & time or anything similar, and then check if the date is correct or not. If not, you need to change the date to the actual date and then save the changes made and restart your computer and then check if the issue is now fixed or not.

Just remember that if the actual date is past the expiration date of the build you have, you need to change it to an older date. If your Windows 10 PC is able to boot back up, you have to update it to a stable Windows build and then go back to the BIOS settings and change the date to the current one else you will definitely encounter Windows update errors in the future as well as security alerts.

Option 2 – Perform a clean install of a stable Windows 10 build

If every system boot fails accompanied by a BSOD error with error code 0x0000605 “A component of the operating system has expired” and you’ve already followed every instruction on option 1, then it’s most likely that your current Windows build has already expired. Remember that almost all the Windows 10 Insider Preview builds (98xx) are created along with an expiration date and when your computer reaches the expiration date, you won’t be able to boot your computer up.

Note that the exact expiration date varies based on the build number. And prior to the expiration date, the operating system will start to display some error warnings telling you that the build will expire and urge you to update the most recent build available. And so once the computer reaches its expiration date, it will begin to reboot every three hours until it no longer boots up which is about 2 weeks approximately after the license has expired.

Once the expiration date is up and your computer no longer boots up, you need to perform a clean install and then install the latest Windows 10 build to resolve the issue once and for all.

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

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

The first thing you need to do is check if the Volume Shadow Copy service. To do that, refer to the following steps:
  • Click on Start and type “cmd” and right-click on Command Prompt from the search results.
  • Then select the “Run as administrator” option to open Command Prompt with admin privileges.
  • After that, type “net stop sdrsvc” and hit Enter to execute the command in stopping the Volume Shadow Copy service.
  • Next, type the “net start sdrsvc” command and hit Enter to start the service again.
Note: You can also restart the service using the Windows Services Manager.
  • In the Cortana search box, type “services” and click on the Services icon to open the Services Manager. Alternatively, you can also tap the Win + R keys to launch the Run prompt and then type “services.msc” in the field and hit Enter to open the Services Manager.
  • From there, look for the Volume Shadow Service (sdrsv) from the list of services. Its Startup type should be set to Manual by default.
  • Restart the service and if you don’t encounter any error while you turn it on, re-run the backup service and see if the backup process runs successfully.

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

If the first option didn’t work and the service still keeps on failing even though the service is running, you can try putting your computer in a Clean Boot State and then try to run Windows Backup again.
  • Log onto your PC as an administrator.
  • Type in MSConfig in the Start Search to open the System Configuration utility.
  • From there, go to the General tab and click “Selective startup”.
  • Clear the “Load Startup items” check box and make sure that the “Load System Services” and “Use Original boot configuration” options are checked.
  • Next, click the Services tab and select the “Hide All Microsoft Services” check box.
  • Click Disable all.
  • Click on Apply/OK and restart your PC. (This will put your PC into a Clean Boot State. And configure Windows to use the usual startup, just simply undo the changes.)
  • Now try to run the Volume Shadow Copy service again and see if the process goes smoothly.
Note: You might also want to delete all the files in the backup solution if you want to start fresh with the backup solution. Just go to C:/System/Volume/Information/Windows Backup and take ownership of the folder. After that, make sure to stop the Volume Shadow Copy service and then delete all the files inside it.
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Fixing the No such interface supported
If you are using File Explorer but suddenly encountered an error saying, “No such interface supported”, read on as this post will guide you on how to fix the problem. This kind of error occurs due to the corruption in the system files which supports several tasks in the system that works with the Windows File Explorer process or File Explorer. This kind of error can give you a hard time in browsing the files on your computer, or when you open important utilities like the Control Panel, or when you copy files and other inconveniences. Needless to say, it won’t bring you any productivity at all and can only leave you frustrated. To fix this problem, there are several options you can try. You can try to run the System File Checker scan or the DISM tool. You could also try to re-register the potentially corrupted DLL files or fix the User Profile. For more details, refer to each one of the given options below.

Option 1 – Try to run System File Checker

System File Checker or SFC is a built-in command utility that helps in restoring corrupted files as well as missing files. It replaces bad and corrupted system files to good system files that might be the cause why you’re getting the errors 0x8024a11a and 0x8024a112. To run the SFC command, follow the steps given below.
  • Type “cmd” in the Start search and then right-click on the appropriate search result.
  • Next, select “Run as administrator” to open Command Prompt with admin privileges.
  • 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.
  • Now restart your computer and see if the problem is fixed or not.

Option 2 – Try to fix the User Profile

The next thing you can do to fix the problem is to fix the User Profile. All you have to do is migrate to a new User Profile in Windows 10 by creating a new User Account and migrating all your personal files from the current user profile folder in the C:/Users location to the new user profile folder which is also located in the same folder.

Option 3 – Run the DISM tool

You can try running the Deployment Imaging and Servicing Management or DISM tool to fix the “No such interface supported” error. Using this built-in tool, you have various options such as the “/ScanHealth”, “/CheckHealth”, and “/RestoreHealth”.
  • Open the Command Prompt with admin privileges.
  • Then type in the following commands and make sure to hit Enter right after you type each one of them:
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    • Dism /Online /Cleanup-Image /ScanHealth
    • exe /Online /Cleanup-image /Restorehealth
  • Do not close the window if the process takes a while as it will probably take a few minutes to finish. Once it’s done, restart your computer.

Option 4 – Try to re-register the problematic DLL file

You may have to re-register the ntdll.dll file using the regsvr32.exe before you can successfully install the program and fix the error. The Regsvr32 tool is a command-line utility that can be used to register and unregister OLE controls like DLL and ActiveX (OCX) controls in the Windows operating system. Follow the steps below to use it.
  • Open Command Prompt as admin from the WinX menu.
  • Next, type the following command in the elevated Command Prompt and hit Enter to execute it. This will re-register the affected DLL file using the Windows operating system tool, regsvr32.exe.
regsvr32 c:windowssystem32actxprxy.dll
  • After you execute the given command, you should see a message saying, “DllRegisterServer in vbscript.dll succeeded” if the Regsvr32 tool was able to run successfully. If it didn’t work, you can try to execute this command instead: FOR /R C: %G IN (*.dll) DO "%systemroot%system32regsvr32.exe" /s "%G"
  • Once it’s done, restart your computer.
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WD BLUE

Blue series is all around typical hard drive made and meant for daily use in desktop computers for all kinds of tasks. You can use it in casual gaming or for storage, its purpose is tailored for all-around casual daily users.

WD RED

WD Red HDD is designed for NAS and RAID systems. Its purpose is to be turned 24/7 who ever need access to it. Get this series if you need to have constant access to files or if you need a reliable RAID hard drive.

WD GREEN

Green series of the hard drive is manufactured for low power consumption and for storage, they are meant to be used for storage and not accessed regularly.

WD PURPLE

Purple line of hard drive products is designed solely for video surveillance systems. Instead of having a preference on reading data like WD RED, the PURPLE series is given preference on writing, constant writing to be more precise.

WD BLACK

The black series is made for an external storage medium with high performance. Due to the high performance, WD Black hard drives are much popular among photo editors and high-end gamers.

WD GOLD

WD Gold HDD provides a long-term cold storage medium. Therefore, this series of Western Digital hard drives are suitable for data centers. These hard drives can handle many sophisticated systems simultaneously and work well with different servers That's it, I hope that you have now a more clear understanding of the WD color-coding of its hard drive series. As always thank you for reading and I hope you will have a great day. If you would like to read more helpful articles and tips about various software and hardware visit errortools.com daily.
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How to Fix Windows 10 Error 0x80070490

Error Code 0x80070490 - What is it?

When downloading a Windows update, it is important to remember that these updates are what keeps your computer safe. Some users have reported seeing error code 0x80070490 when allowing updates for their Windows PC. This error code may appear when the user is trying to connect to the update site for Windows and maybe a result of a corrupted CBS manifest. Having this error code will not only stop the update of the system, but it will also certainly halt any work being done with the computer. Quite a few Windows users have written in complaints about this error while updating from any prior Windows update to Windows 10.

Common symptoms include:

  • While a user is performing the updates, the Windows computer will stop running the updates, and it will show the error code 0x80070490.
  • Windows updates will not install any new features and will not install security patches.
  • The computer will not continue with the Windows update, and it may revert back to the previous state that the computer was in, prior to attempting the updates.

Error Causes

There is not a lot known about what exactly causes the error code 0x80070490, but it is something critical that makes Windows abruptly stop its updates. It could be caused by a simple glitch in the computer system, or it could be caused by a larger problem. One thought is that the CBS (Component-Based Servicing) manifest can be corrupt. Another thought is that the computer's anti-virus software may be interfering with the computer's ability to perform the necessary updates.

Further Information and Manual Repair

There is very little information known about error code 0x80070490 and why it exists, but there are a few methods in which to correct it. Users should be careful when trying to fix this error themselves. If the user feels that the methods are too complicated or they are uncomfortable taking it on themselves, they should contact a Windows repair technician to fix the problem. Not all methods listed will suit the user's needs, but it is dependent upon the problem at hand as to which method will be the best fit to fix the error code. If these steps are taken and the error is not corrected, it is vital to contact the Windows repair technician.

Method One: Creating a new local account

Create a new local account on the computer, and allow administrator privileges on it. Next, move all of your documents and personal files to the new account. Delete the old account (you will no longer be using this) and switch over to the new one. After switching to the new local account, add the Microsoft account to it.

Method Two: Delete user ID, Store cache from the registry

  • You will need to open the Registry Editor. Do this by pressing the Windows Key and R, then typing in “Regedit”. After this is typed in, press Enter or click the OK button to start the registry editor.
  • When this starts, you will need to navigate all the way to the following key on the left pane:
  • HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionAppxAppxAllUserStore After this, find the key that is similar to this: S-1-5-21-1505978256-3813739684-4272618129-1016
  • NOTE: this is just an example. The keys will be in a similar format but will not look exactly like this.
  • Select all the keys that look like this, and then delete them. After these keys are deleted, close the Registry Editor and restart the computer.

Method Three: Check to see if BITS, MSI Installer, Cryptographic, and Windows Update Services are running

Press the Windows key and R. Then, type in services.msc. After the Services window starts up, find the following services:  BITS, MSI Installer, Cryptographic, and Windows Update Services. When these services are found, make sure that they are up and running. If one or more of these services is not running, make sure that they are started. To do this, select the service and then click on Start the Service.

Method Four: Windows Update Troubleshooting

Press the Windows key plus W and then type in “troubleshooting”.  Select Troubleshooting. On the top left corner, select View All. Click on Windows Update troubleshooter. After this, follow the on-screen instructions in order to run the troubleshooter. After the troubleshooter has run, the issue should be fixed.

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Repair Windows 10 Error Code 0xC1900200, 0x20008

Code 0xC1900200, 0x20008, What is it?

Error Code 0xC1900200, 0x20008 (Code 0xC1900202 – 0x20008)  is an error that occurs when you attempt to upgrade to Microsoft Windows 10, but the minimum requirements have not been met by your computer. You will therefore be unable to upgrade to Microsoft Windows 10 until your computer is updated or upgraded to meet those requirements. Common symptoms include:
  • When attempting to upgrade a dialog box with Code 0xC1900200 – 0x20008 (Code 0xC1900202 – 0x20008) is displayed.
  • Your computer is unable to begin the Microsoft Windows 10 upgrade process.

Solution

Restoro box imageError Causes

Error Code 0xC1900200 – 0x20008 (Code 0xC1900202 – 0x20008)  occurs when you are unable to begin the Microsoft Windows 10 upgrade because your computer does not meet the minimum requirements to run Microsoft Windows 10.
  • You are unable to begin the upgrade because your computer does not meet the required system or hardware specifications.
  • You are not running the correct version of Microsoft Windows to be able to begin the upgrade.
  • You are not running the latest updated version of Microsoft Windows 7 SP1 or Microsoft Windows 8.1. Error Code 0xC1900200 – 0x20008 (Code 0xC1900202 – 0x20008) as stated, simply means your computer does not meet the requirements to update and does not indicate a permanent problem or inability to continue to use your computer. This error only means that you will not be able to upgrade to Microsoft Windows 10 until your computer is made to meet these requirements.

Further Information and Manual Repair

There are several solutions that the user can complete at home that should fix the problem resulting in a manifestation of Error Code 0xC1900200 – 0x20008 (Code 0xC1900202 – 0x20008). Below are several options that should resolve this error.

Method 1:

Verify what version of Microsoft Windows you are currently running, older, outdated, or no longer supported versions of Microsoft Windows are not able to upgrade to Microsoft Windows 10. If you are not running one of the following versions you will have to update before being able to upgrade.
  • The most current version of Microsoft Windows 7 SP1
  • The most current version of Microsoft Windows 8.1

Method 2:

Your computer's system specifications do not meet the requirements to be able to upgrade to and run Microsoft Windows 10. To check your system specifications do the following.
  • Click on the start button in the bottom left corner, then locate the control panel on the menu, click on it to open.
  • Once it opens, locate system and security on the menu and click to open, click on system and this will show you your amount of RAM and processor speed.
  • Find device manager on the left-hand side click this then select display adapter, and it will show you your current video card.
  • Click on the start button again, then click on the computer in the menu, this will show you your hard drive size, and available space.
If you have the option available you can simply run the get Microsoft Windows 10 app to check compatibility. Once you have your system specs make sure they meet or exceed the following.
  • 1 GHz or higher processor or SoC
  • 1 gig of RAM for 32 bit and 2 gigs of RAM for 64 bit
  • 16 GB available hard drive space for 32 bit, 20 GB for 64 bit
  • Minimum of DirectX9 that has 1.0 WDDM
  • At least an 800x600 display
If your computer does not meet these minimum requirements, upgrade the components necessary to meet them. If you do not possess the technical expertise required to accomplish this yourself or do not feel comfortable doing so, download and install a powerful automated tool to get the job done.

Method 3:

Your computer might not meet the aforementioned requirements to make an upgrade because of insufficient hard drive space or resources. Learn how to create space on your computer.

Method 4:

Many people hold on to and use the same computer for a very long time. It is possible that your computer cannot be upgraded to meet the requirements, or that the cost to do so would be so high that a new computer would be cheaper. If that is the case, your only option may be to replace your computer.
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INET_E_RESOURCE_NOT_FOUND
The previous Windows versions all came with Microsoft's browser Internet Explorer. A lot of users love it because not only that it is easy to use. It is also very fast. Users didn’t have to worry about compatibility because it is almost always compatible with its Windows Version. When they introduced Windows 10, they changed the name of the browser from Internet Explorer to Microsoft Edge. It is faster and more user-friendly compared to its predecessors. But after the Creator Update, some experienced receiving the inet_e_resource_not_found error code. In contrary to what everyone expects, you actually don’t have to uninstall and reinstall the Microsoft Edge App. What you can do is reset the browser in your Apps & Features Settings in your Microsoft Settings.

To reset the browser you can follow the steps below:

  1. Click on the Windows icon and go to settings.
  2. Click on Apps and this will bring you to the Apps & Features page. Look for Microsoft Edge from the list of Apps and click on it.
  3. Choose Advance Option
  4. Scroll down then Under Reset, click on repair or reset. When you repair it will fix the existing problem but the data that caused the problem may still be present and can still cause problems. If you click on reset, it will delete all the cache and cookies that are installed in your browser but it will save your Favorites as well as your bookmarks.

Another way to resolve this is by disabling the feature TCP Fast Open on Microsoft Edge. To disable this, go ahead and follow the steps below:

  1. Open the Microsoft Edge browser.
  2. Type in about: flags on the Address (URL) bar.
  3. Under Networking, uncheck the Enable TCP Fast Open.
  4. Close your Microsoft Edge browser and open a new one.
Flushing the DNS also worked for other Users. Sometimes, the error code the inet_e_resource_not_found is caused by a corrupted DNS cache. There are 2 ways to flush your DNS. The first option is to use the command prompt to run the command.
  1. To access the Command prompt or CMD, you can search for it on Cortana or you can click on the Windows icon to access the Programs, scroll down to the Windows System folder and click on it.
  2. A drop-down menu will show up, click on Command Prompt which is the first on the list.
  3. Type in the code ipconfig /flushdns and press enter.
  4. There will be a message that will show that says Windows IP configuration successfully flushed the DNS Resolver Cache
  5. Exit the CMD by typing exit and press enter.
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Fix CAS System Was Unable to Initialize in WoW
After so many years World of Warcraft is still among the most played MMORPG games in the world. It is still constantly updated with new content and tweak graphically in order to be relevant and fresh. But even the best or most popular ones can still have some minor issues and bugs from time to time. CAS System Was Unable to Initialize is the error that was reported lately by WOW players all around the globe and it happens in multiple Windows systems. In this guide, we will take with this issue and provide you with solutions on how to fix it so you can get back to enjoying the game itself.
    1. Repair WOW

      In battle.NET launcher select WOW and click on Options Click on Scan and Repair Let the process finish and then launch the game again
    2. Clean Windows registry

      Windows cleaning registry operation is a complex task and we will not cover each possible scenario here, instead of trying manually to find issues and clean registry download and install third party registry cleaner software.
    3. Run WOW with command line argument

      One of the solutions for this particular error is to run WOW with a specific command line switch: Run battle.NET client as administrator by right-clicking on it and choosing run as administrator If you are not signed in, sign in now Click on World of Warcraft to select it Click on options Click on Game settings Check the box associated with Additional command-line arguments When the box is selected you should've able to add inline argument or switch, add -uid wow_engb and confirm Run World of Warcraft
    4. Enable Secondary logon service inside Windows

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    5. Delete the cache folder

      Both indices and cache folder needs to be deleted in order to reset corrupted data. Make sure that both World of Warcraft and battle.NET are fully closed For this step to work, you will need to go into the folder where you have installed the World of Warcraft game. By default this is in C:/Program Files/World of Warcraft/ but if you have used another folder go there via file explorer. Once you are inside the folder locate the indices folder and delete it After that locate and delete the cache folder as well Restart your computer and start battle.NET
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      Another reason for CAS System Was Unable to Initialize error is because the World of Warcraft folder has been set to read-only and since the client does not have write privileges it will throw this error. To remove the read-only attribute from the folder go to your World of Warcraft installation folder but do not enter it Right-click on it instead and choose properties Under properties uncheck the read-only box and confirm. Run World of Warcraft
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How to Fix Error Code 0xC004C020

Error Code 0xC004C020 (Code 0xC004C020) – What is it?

Error code 0xC004C020 (Code 0xC004C020) is an error that occurs when you attempt to activate a copy of Windows 7 with a key, but the key has already been activated multiple times. When receiving this error code, it means that you are trying to exceed the number of times that the Windows 7 key is allowed to be activated. Common symptoms include:
  • Attempting to install Windows 7 with a key and a dialog box with the code 0xC004C020 is displayed.
  • The computer is unable to install Windows 7 with the key.
  • Certain features will refrain from working until the correct key has been entered.

Solution

Restoro box imageError Causes

Error Code 0xC004C020 occurs when you are not able to install Windows 7 using a previously purchased key code that has been installed numerous times previously on the same computer.
  • You are not able to use your previously used key to install Windows 7.
  • You have used the Windows 7 key the maximum number of times allowed.
Error code 0xC004C020 simply means that the Windows 7 code that you are trying to use to install Windows 7 has already been used the maximum number of times allowed, even when installing it on the same computer that it was previously used on. This would indicate that the key is what is known as a volume key- meaning that there is a cap on the number of uses.

Further Information and Manual Repair

Many people encounter this problem when they are doing software development or testing and need to reinstall Windows 7. Some people might also encounter this error code when installing Windows 7 with a key that was used too many times previously. It should be noted that there are several ways to fix this problem, but if nothing is working, you should contact a computer repair technician.

Method One

Activate by phone- the long method.
  1. Click the start button, right-click Computer, click Properties, and then click Activate Windows.  This will open Windows Activation.
  2. Click on “Show me other ways to activate”.
  3. Find and enter the Windows 7 key, then click Next.
  4. Click on “Use the automated phone system”. If you are prompted for an administrator password or a confirmation, confirm or type the password now.
  5. Select the location nearest to you and then click the Next button.
  6. There will be a list of available phone numbers, choose one and call it. There will be an automated system that will guide the activation process.
  7. Enter the installation ID when prompted, it will be listed on your computer screen.
  8. The phone system will give you a confirmation ID, write this down.
  9. Type this confirmation ID into the space that is provided by step 3. This will be in the activation dialogue. Then, click NEXT and follow the instruction.
  10. If this is not successful, stay on the line and be transferred to a customer service representative that will assist you.

Method Two

Activate by phone- this is a much simpler method.
  1. Click on Start, type: slui.exe 4 into the Search box
  2. Press Enter on the keyboard.
  3. Pick your country.
  4. Choose the Phone Activation option; stay on hold to speak with a customer service representative.

Method Three

Error code 0xC004C020 occurs if you have used your Windows 7 activation key on multiple computers, or multiple times on the same computer. You are not allowed to exceed the uses of the key—you should consider purchasing a new key if this is the case. A Windows 7 key is available for purchase online through the Microsoft website, in the shop section. The new product key must then be activated within 30 days, or it becomes no longer valid. It can be activated online or through the telephone. If it is not activated on time, features will stop working until the new key has been activated. This should be the last resort method, as you should not have to purchase a new Windows 7 key code if it is not necessary. 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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Fix Netwtw04.sys BSOD Error in Windows 10
Blue Screen of Death errors or Stop errors are indications that something’s wrong with your computer. So when you encounter one, you must find out what the root cause of the problem is before it gets out of hand. One of the BSOD errors you might encounter on your Windows 10 computer is the “DRIVER IRQL NOT LESS OR EQUAL or SYSTEM THREAD EXCEPTION NOT HANDLED, Netwtw04.sys failed” error. As you know, system files or .sys files are some of the essential parts of the Windows operating system. It is a repository of system driver settings used by the Windows operating system in order to communicate with the connected hardware and devices. They are essential for the normal functioning of the operating system. A lot of Windows 10 users are facing this particular Blue Screen of Death error whenever they open an app or disconnect external devices from the system. The Netwtw04.sys file is a part of the Intel PROSet/Wireless Wi-Fi software. And so when you might encounter two kinds of Stop errors for the Netwtw04.sys driver file such as:
  1. “DRIVER_IRQL_NOT_LESS_OR_EQUAL What failed: Netwtw04.sys.” – This kind of error message signifies that a kernel-mode driver tried to access pageable memory at a process IRQL that was too high.
  2. “SYSTEM_THREAD_EXCEPTION_NOT_HANDLED What failed: Netwtw04.sys” – This error message indicates that the root cause of the error might be incompatible drivers with the operating system. In general, the root cause of the Netwtw04.sys BSOD error might be due to several reasons such as corrupted files, incorrect device driver configuration, malicious programs, outdated drivers, bad drivers, corrupted Windows Registry as well as some damaged or corrupted system files.
Whichever of the two error messages you got, you can try the troubleshooting options given below to fix the “DRIVER IRQL NOT LESS OR EQUAL or SYSTEM THREAD EXCEPTION NOT HANDLED, Netwtw04.sys failed” BSOD error.

Option 1 – Try to rollback your Network driver

If you have updated the driver software as of late and you suddenly got this BSOD error, you might have to roll back the device driver – in other words, switch back to the previous working version. To do that, follow these steps:
  • Tap the Win + R keys to launch the Run window and then type in the “devmgmt.msc” command and hit Enter to open the Device Manager window.
  • Under the Device Manager, you will see a list of drivers. From there, look for the Network Adapters and expand it.
  • Next, select the driver entries that are labeled appropriately other than anything in the context of the WAN Miniport.
  • Then select each one of them and double-click to open a new mini window.
  • After that, make sure that you’re on the Driver tab and if you are not, just navigate to it then click the Roll Back Driver button to switch back to the previous version of your Network adapters.
  • Now restart your computer to successfully apply the changes made.

Option 2 – Try to update the Network drivers

If the present Network driver is giving you a headache that is the “DRIVER IRQL NOT LESS OR EQUAL or SYSTEM THREAD EXCEPTION NOT HANDLED, Netwtw04.sys failed” BSOD error, then you need to update the Network drivers. To do so, here’s what you have to do:
  • Tap the Win + R keys to launch the Run window and then type in the “devmgmt.msc” command and hit Enter to open the Device Manager window.
  • Under the Device Manager, you will see a list of drivers. From there, look for the Network Adapters and expand it.
  • Then right-click on each one of the Network drivers and update them all.
  • Restart your PC and see if it helped in fixing the BSOD error.
Note: If updating the network drivers didn’t help in fixing the problem, you can also try to uninstall the very same drivers and restart your Windows 10 PC. After that, the system itself will reinstall the drivers you just uninstalled. Alternatively, you can also download and install the drivers from the manufacturer’s website directly.

Option 3 – Try running the System File Checker Scan

The SFC or System File Checker scan could detect and automatically repair damaged system files that could be causing the Netwtw04.sys failed BSOD error. SFC is a built-in command utility that helps in restoring corrupted files as well as missing files. It replaces bad and corrupted system files to good system files. To run the SFC command, follow the steps given below.
  • Tap Win + R to launch Run.
  • Type in cmd in the field and tap Enter.
  • After opening Command Prompt, type in sfc /scannow
The command will start a system scan which will take a few whiles before it finishes. Once it’s done, you could get the following results:
  1. Windows Resource Protection did not find any integrity violations.
  2. Windows Resource Protection found corrupt files and successfully repaired them.
  3. Windows Resource Protection found corrupt files but was unable to fix some of them.

Option 4 – Run the DISM Tool

The DISM tool is another command-line tool in the Windows operating system that could help users fix various corrupted system files. To use it, follow these steps:
  • Open the Command Prompt as admin.
  • Then type in this command: DISM /Online /Cleanup-Image /RestoreHealth
  • The DISM command you entered will repair the corrupted system image. Do not close the window if the process takes a while as it will probably take a few minutes to finish.

Option 5 – Run the CHKDSK Utility

Running the CHKDSK utility might also help you resolve the Netwtw04.sys failed BSOD error. If your hard drive has issues with integrity, the update will really fail as the system will think that it’s not healthy and that’s where the CHKDSK utility comes in. The CHKDSK utility repairs hard drive errors that might be causing the problem.
  • Open Command Prompt with admin privileges.
  • After opening Command Prompt, execute the following command and hit Enter:
chkdsk /f /r
  • Wait for the process to be completed and then restart your computer.
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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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