How to Fix Fatal Error c000021a

If you encounter Error Code 0x80090016 while trying to create a PIN or when you are using Microsoft Store, then you’ve come to the right place as this post will guide you in how you can fix this problem. Recently some users reported that they were unable to sign in or set up the Windows 10 Login PIN. Note that the potential fixes for this issue are totally different in both scenarios. Here’s the error message you get when you encounter the PIN related error:

“Something went wrong, We weren’t able to set up your PIN. Sometimes it helps to try again or you can skip for now and do this later.”

On the other hand, here’s the error message you get for the Microsoft Store-related error:

“Try that again, Something happened on our end and we couldn’t sign you in.”

Here are some potential fixes you can try to fix the Error Code 0x80090016 in the Microsoft Store:

Option 1 – Try to sync the Date and Time

The first thing you can try is to sync the Date and Time of your computer as the wrong Date and Time settings are one of the most common causes of connection problems like the Error Code 0x80090016. This is because of the incompatibility between the SSL Certificate validation date and the System Clock. Thus, you have to sync your System Clock. Refer to the steps below to do so.

• Start by tapping the Win + I keys to open the Windows Settings.
• Next, go to Time & Language > Date & time.
• From there, turn the toggle on for the “Set time automatically and Set time zone automatically” option on the right-side panel.
• After that, click on Region & language located on the left side panel and make sure that the Country or region on the right-side panel is set to the country you live in.
• Now close the Settings app and restart your computer and see if it fixes the problem or not.

Option 2 – Try to re-register the Microsoft Store app via PowerShell

• Tap the Win + X key combination or right-click on the Start button and click on the Windows PowerShell (Admin) option.
• If a User Account Control or UAC prompt appears, just click on Yes to proceed and open the Windows PowerShell window.
• Next, type in or copy-paste the following command to re-register the Microsoft Store app and tap Enter:

powershell -ExecutionPolicy Unrestricted Add-AppxPackage -DisableDevelopmentMode -Register $Env:SystemRootWinStoreAppxManifest.xml

• Wait for the process to be completed and then restart your computer.

Option 3 – Try to reset the Microsoft Store cache

Just like browsers, Microsoft Store also caches as you view apps and games so it is most likely that the cache is no longer valid and must be removed. To do so, follow the steps below.

• Right-click on the start button and click on Command Prompt (administrator).
• Next, type in the command, “exe” and tap Enter. Once you do, the command will clear the cache for the Windows Store app.
• Now restart your PC and afterward, try opening Microsoft Store again and then see if Error Code 0x80090016 is resolved or not.

Option 4 – Try to run the Windows Store Troubleshooter

The Windows 10 Store Apps Troubleshooter will help you in fixing the Error Code 0x80090016. This is a great built-in tool from Microsoft that helps users fix any app installation issues. So this is worth a try to solve the problem. This built-in tool also helps you fix the Windows 10 Store if it isn’t working. To use the Windows Store Troubleshooter, follow the steps below.

• Tap Win + I keys again to open the Windows Settings panel.
• Go to Update & Security and then go to Troubleshoot.
• On your right-hand side, scroll down to find the Windows Store Apps and then click on Run the troubleshooter option and see if it fixes the problem.

On the other hand, you can use the options below if you encounter Error Code 0x80090016 while setting up your PIN.

Option 5 – Try to manage the NGC Folder

• You need to boot your computer into Safe Mode first.
• Next, delete all the contents of the NGC folder and you can do that by taking ownership of the folder first. To do so, refer to these sub-steps:
  • First, locate the concerned folder and right-click on it then select Properties.
  • Next, click on the Edit button in the Properties window and click OK to confirm if you got a User Account Control elevation request.
  • After that, select user/group from the permission windows or click on the Add button to add another user or group. It would be best if you add “Everyone” to give permission.
  • Then check “Full Control” under the “Allow” column to assign full access rights control permissions.
  • Now edit the permission to Full Control for “Everyone”.
  • Click OK to save the changes made and then exit.
• After you take ownership of the folder, you can now delete all of its contents.
• Once you’re done, restart your computer and see if the problem is fixed.

Option 6 – Try to use the Group Policy Editor

• Tap the Win + R keys to open the Run dialog box
• Then type “gpedit.msc” in the field and hit Enter or click OK to open the Group Policy Editor.
• Next, navigate to this setting: Computer Configuration > Administrative Templates > System > Logon
• After that, double click on “Turn on convenience PIN Sign-in” and set its radio button to Enable. This policy setting has the following description:

“This policy setting allows you to control whether a domain user can sign in using a convenience PIN. If you enable this policy setting, a domain user can set up and sign in with a convenience PIN. If you disable or don’t configure this policy setting, a domain user can’t set up and use a convenience PIN. Note: The user’s domain password will be cached in the system vault when using this feature. To configure Windows Hello for Business, use the Administrative Template policies under Windows Hello for Business.”

• After you set the radio button to Enable, it will turn on the Logins using the PIN. Note that setting the radio button to Disabled or Not Configured will turn off the Logins using the PIN.
• Now exit the Group Policy Editor and restart your PC so that the changes can take effect.

What is Error 0x8007042c?

0x8007042c is a Windows Firewall error code. This error hampers your ability to turn on Windows Firewall on your PC. Firewall is a network security system. It establishes a barrier between a trusted, secure internal network and another network (the internet) that is assumed unsecure. Error 0x8007042c is displayed in the following format: “0x8007042c” error message when you try to start Windows Firewall

Solution

Error Causes

Error 0x8007042c may pop up on your computer screen because of many reasons. These include:

• Firewall service is disabled
• Malware infection
• Registry corruption

Further Information and Manual Repair

The good news is that this error code is easy to resolve. To repair, you don’t to be technically sound or hire a professional for the job. Try our DIY methods illustrated below to fix the problem by yourself in a few minutes.

Method 1 - Start Firewall Manually

This method allows you to start Windows Firewall service manually and then make sure that it starts automatically in the future. This can be done by following these steps, first, go to the start menu and then type services in the search box. Right-click services and then click RUN as Administrator. Now scroll down until you see Windows Firewall. Then double click on it. After that, click the startup type box and then click Automatic. If ‘Service Status’ is stopped, then click Start. Now click ‘Apply’ and then press OK. Scroll until you see ‘Base Filtering Engine’, double click it. If again the ‘Service Status’ is stopped, click start. Press Apply and then OK to activate changes. Now restart Windows, Firewall will be enabled.

Method 2 - Remove Malware

If the error cause is a malware infection, use the Microsoft Safety Scanner to remove malware immediately from your PC. Download it from Microsoft’s official website, install, accept terms and then run it to perform a quick scan. The Microsoft Safety Scanner will scan and remove all malware infecting your PC. Once this is done, click Start and then type Windows Firewall in the Search box. Click Windows Firewall and the navigation pane of Control Panel; Click Turn Windows Firewall on or off. Click Turn on Windows Firewall for each network location and then press OK to activate changes.

Method 3 - Repair the Registry

Sometimes the underlying cause can be registry corruption. In such a situation, download Restoro. It is a PC Repair Tool deployed with a registry cleaner. It scans and removes all the bad entries and files infecting your PC, cleans and repairs the registry in a few minutes. Click here to download Restoro.

If you are one of the few users who is still burning CDs and DVDs, you might have come across an error that says, “Medium Speed Error” or “Power Calibration Error”. There are several factors that could cause this error but it’s most likely that the CD/DVD burner wasn’t able to determine the Optimum Power Calibration rate properly. So what is Optimum Power Calibration rate? It is a test that runs before the burning process to regulate the optimal laser power needed to complete the job. And if this process malfunctions, obviously, you won’t be able to burn the content on your CD or DVD. There are also cases when the Power Calibration error pops up for some small issues that have nothing to do with the regulation of laser power. Here are some quick fixes you can try to resolve the Power Calibration error when burning a CD or DVD.

Option 1 – Make sure you’re using good quality CD or DVD

A lot of burning issues stem down to the purchase of low CDs or DVDs to make sure that what you are using has good quality for it is not always a good idea to purchase cheap products as cheap products could also mean cheap quality.

Option 2 – Try burning at lower speeds

If you’re certain the problem is not with the CD or DVD you are using then you can try burning again, this time at lower speeds. There are instances when doing things quickly can end in a disaster such as the “Medium Speed Error” or “Power Calibration Error” you’re getting.  To fix the problem, you have to burn at a slower speed and just take the time to wait until the burning process is done.

Option 3 – Try updating your burning software

It’s always a good idea to check if the burning software you’re using requires an update especially if it’s throwing up “Medium Speed Error” or “Power Calibration Error”. Thus, you need to update your burning software right away and then try to burn your CD or DVD once the update has been completed.

Option 4 – Try cleaning the disk drive

You might want to consider cleaning the disk drive using several tools in the market that is designed to clean the disk drive. These tools work on removing dust particles from the lens which helps a lot in the burning quality. Aside from that, it also helps in reducing errors like “Medium Speed Error” or “Power Calibration Error”. So give this option a try as it might time for a disk drive cleanup.

Option 5 – Try to disable the IMAPI

If none of the options given above worked, you might want to disable the IMAPI or Image Mastering Applications Programming Interface. How? Refer to the steps below.

• Open Control Panel by simply clicking the Start button and then typing “control panel” in the field.
• Control Panel should pop up in the search results. Once you found it, click it to open it.
• Next, select System Security > Administrative Tools and then click Services.
• After that, you’ll have to search for the “IMAPI CD-Burning COM Service” option.
• Then right-click on it and select Properties.
• From there, switch the Startup Type from “Enabled” to “Disabled”.
• Now click on Apply and then restart your PC.

Microsoft has been bringing new lock-screen features with every iterative feature release of Windows 10 in order to improve user experience. However, Windows 10 users have different opinions regarding it. Some users are pleased with it while some users simply do not like it. So if you are one of the users who seem to not approve of this feature, read on as this post will be about enabling or disabling the Console Mode sign-in feature in Windows 10. Before you proceed, take note that you will not be able to use your mouse pointer in this Consol Mode login screen and you can only use your keyboard to navigate around various options. You might also want to create a System Restore point just in case. To enable or disable the Console Mode sign-in in your Windows 10 computer, refer to the given steps below. Step 1: Tap the Win + R keys to open the Run dialog box. Step 2: Then type in “Regedit” in the field and tap Enter to open the Registry Editor. Step 3: Next, navigate to the following registry path:

ComputerHKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionAuthenticationLogonUITestHooks

Step 4: From there, look for a DWORD named “ConsoleMode”. If you don’t see this DWORD, you can just create a new DWORD and name it as “ConsoleMode” and make sure that its base is set to Hexadecimal. Step 5: After that, double click on ConsoleMode and change its value to “0” to disable it and “1” to enable it. Step 6: Now restart your computer to apply the changes made. Like pointed out, you can only use your keyboard when you’re in the Console Mode login window or screen. You can just use the ESC button to go back to the menu while you can utilize the arrow keys so you can go through the options that are mostly vertically arranged and the Enter key to select an option. In the Console Mode, sign-in using the Passwords and PINs worked efficiently.

If your VPN software blocks and disconnects the Internet or Wi-Fi connection as soon as it is connected, read on as this post will give you fixes to resolve the problem. This kind of issue is odd but not unheard of. Many users use VPN for privacy and security but if it causes internet connection problems, you have to pin down the root cause of the problem and fix it in order to continue browsing the internet with privacy and security. Here are some suggestions you need to check out to resolve the issue between your VPN software and network.

Option 1 – Try installing the latest version of the TAP adapter

Since all VPN software uses a TAP adapter which is mostly from OpenVPN, you might want to download and install the TAP adapter driver to resolve the problem.

Option 2 – Run the Network Adapter Troubleshooter

• Open the Search bar on your computer and type in “troubleshoot” to open the Troubleshoot settings.
• Next, scroll down and select the “Network Adapter” option from the right pane.
• Then click on the Run Troubleshooter” button.
• After that, your computer will check for any possible errors and will pinpoint the root cause of the problem if possible.

Option 3 – Configure the client computer to use the default gateway

This kind of connection problem can occur when you configure the VPN connection as the default gateway on the remote network. In such a case, the VPN settings override the default gateway settings (TCP/IP settings). Thus, you have to configure the client computers in order to use the default gateway setting on your local network for internet traffic as well as a static route on the remote network for VPN-based traffic.

Option 4 – Try to use the Google Public DNS

You might want to change your DNS to Google Public DNS as it could help you resolve the internet connection problem caused by your VPN. To do so, follow the steps below.

• The first thing you have to do is right-click on the network icon in the Taskbar and select Network and Sharing Center.
• Next, click on the “Change Adapter Settings” option.
• After that, search for the network connection that you are using to connect to the internet. Note that the option might be “Wireless Connection” or “Local Area Connection”.
• Right-click on your network connection and click on Properties.
• Then select the new window to choose the “Internet Protocol 4 (TCP/IPv4)” option.
• After that, click on the Properties button and click the checkbox in the new window for the option “Use the following DNS server addresses”.
• Type in “8.8.8.8” and “8.8.4.4” and click OK and exit.

Option 5 – Try checking the settings of your VPN software

If your VPN software has a built-in “kill switch” it prevents any internet usage every time there is a problem in connecting with the VPN server which explains why your internet connection is disconnected when your VPN software is connected. In addition, you could also try to change your VPN software’s protocol since all VPNs support multiple protocols. It could be that the protocol your VPN uses is blocked so try changing to another protocol and see if it fixes the problem.

Option 6 – Update the Network Adapter drivers

You might also want to update the Network Adapter drivers by following 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.
• 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 “Windows could not find a driver for your network adapter” error, 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.

To reinstall the network adapter driver, refer to these steps:

• Open the Devices Manager from the Win X Menu.
• Then locate the device drivers and right-click on them to open the Properties.
• After that, switch to the Driver tab and click on the Uninstall Device button.
• Follow the screen option to completely uninstall it.
• Finally, restart your computer. It will just reinstall the device drivers automatically.

Recently, a number of users reported seeing plain white icons on their “.docx” files instead of the Word icon. This kind of issue is mostly caused by a conflict with the default program settings in Windows which is why you may not see any Microsoft Word icon on your .docx files. So if you suddenly find that the Microsoft Word icon is either blank or missing and does not show properly on .doc and .docx document files of Office on your Windows 10 computer, then you can check out the potential solutions outlined below. Before you proceed, you can try to restart your computer as there are instances when a simple system restart can resolve some issues like this one. However, if it does not help, create a System Restore point first. This is to ensure that you can always undo the changes you are about to make in case something goes wrong. Once you have that covered, proceed to the following options.

Option 1 – Try to configure .docx files to open with “winword.exe”

You can try configuring the .docx files to open with the winword.exe in order to fix the problem.

• Right-click on a .docx file and select the “Open with…” option.
• After that, if a prompt appears with a message saying, “How do you want to open this file”, select the “More apps” option to proceed.
• Next, scroll down and check the checkbox that says, “Always use this app to open .docx files” option.
• Then click on the “Look for another app on this PC” link and choose the WINWORD.exe application from one of the following paths based on the installed Office version in your computer and click Open:
  • Word 2016 (64-bit): C:/Program Files/Microsoft Office/root/Office16
  • Word 2016 (32-bit): C:/Program Files (x86)/Microsoft Office/root/Office16

• Now check if you can now see the Word icon on the .doc or .docx files.

Option 2 – Try changing the default Word icon via Registry Editor

• Tap the Win + R keys to open the Run utility.
• Then type “Regedit” in the field and hit Enter to open the Registry Editor.
• Next, navigate to this path located in the left pane: HKEY_CLASSES_ROOTWord.Document.12DefaultIcon
• From there, double click on the default value at the right pane and based on the Word version you are using as well as the architecture (32 bit or 64 bit) and then copy-paste the corresponding value in the Value data box:
  • For Word 2016 (64-bit) keep it as C:/Program Files/Microsoft Office/root/Office16/wordicon.exe,13
  • For Word 2016 (32-bit) Keep it as C:/Program Files (x86)/Microsoft Office/root/Office16/wordicon.exe,13

• Once you’re done, tap Enter and then close the Registry Editor.
• Restart your computer and see if the problem’s fixed.

Option 3 – Try to rebuild the Icon cache

You may want to rebuild the Icon cache as it could also help fix the issue.

• Tap Win + E to open File Explorer and then click Folder Options and click Views to show Hidden System Files.
• After that, go to C:Users%username%AppDataLocal folder and look for a file named Iconcache.db and delete it.
• Next, go to C:Users%username%AppDataLocalMicrosoftWindowsExplorer.
• From there, look for the following files and delete them.
  • iconcache_32.db
  • iconcache_48.db
  • iconcache_96.db
  • iconcache_256.db
  • iconcache_1024.db
  • iconcache_1280.db
  • iconcache_1600.db
  • iconcache_1920.db
  • iconcache_2560.db
  • iconcache_exif.db
  • iconcache_idx.db
  • iconcache_sr.db
  • iconcache_wide.dd
  • iconcache_wide_alternate.db
• Restart your computer. This will purge and rebuild the icon cache.

Option 4 – Try fixing Office apps

Fixing the Office apps can help you resolve the Word icon issue. All you have to do is open Settings > Apps. From the app list, look for the Microsoft Office Desktop apps and select it and then click on the Advanced options and click Fix. After that, wait until the process is completed and restart your PC. However, if the problem still persists, repeat the steps again but this time, click on Reset instead of Fix.

Option 5 – Try to repair Office Installation

If the options given above didn’t work, you can try to repair the Office installation and see if it can fix the problem.

• Open Control Panel and click on Programs and Features.
• Next, right-click on the Office program that you want to repair which in this case is, Word.
• Select Change and click Repair > Continue. After that, Office will start to repair Microsoft Word.
• Wait until the process is done and then reboot your computer.

One of the most critical processes in the Windows 10 operating system is the Explorer.exe. And there are times when you might encounter an error that says, “System call failed”. You can encounter this error when you try to launch File Explorer, and in such case when the File Explorer does not work, it could cause issues in accessing folders and files on your computer. This kind of error pops up when the explorer.exe system file has become corrupted or if there is some process that interferes with its smooth functioning. To fix this error, you can try to restart the explorer.exe process, run both the System File Checker scan and DISM tool. You could also put your computer in a Clean Boot State or uninstall any programs you’ve installed recently. For more details, follow each one of the given suggestions below.

Option 1 – Try to restart the Explorer.exe process

The first thing you can do is try to restart the Explorer.exe process. To do so, refer to these steps:

• First, right-click on the Taskbar and select the Task Manager.
• Next, expand the Task Manager window to see all the active processes.
• From there, look for the Windows Explorer process, right-click on it and select Restart.
• After that, check if the error is now fixed.

Option 2 – Run System File Checker scan

If restarting the explorer.exe process 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 this command: sfc /SCANFILE=c:windowsexplorer.exe

Note: If you are using a 64-bit Windows operating system, enter the “sfc /SCANFILE=C:WindowsSysWow64explorer.exe” command instead.

• Wait until the process is completed and then restart your computer.

Option 3 – Run the DISM tool

You might also want to run the DISM tool. This tool is known to repair potentially corrupted files in your system as having them could also system issues like the “System call failed” error. To repair these corrupted system files, you can run the DISM commands:

• Tap the Win + X keys and click on the “Command Prompt (Admin)” option.
• After that, input each one of the commands listed below sequentially to execute them:
  • Dism /Online /Cleanup-Image /CheckHealth
  • Dism /Online /Cleanup-Image /ScanHealth
  • Dism /Online /Cleanup-Image /RestoreHealth

• Once you’ve executed the commands given above, restart your computer and check if the problem is now fixed.

Option 4 – 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 c: /f /r
• 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 5 – Put your computer in a Clean Boot State

As pointed out, there are some instances that some conflicting programs installed in your computer might be the one that triggers the “System call failed” error to appear when you try to open File Explorer. To identify which program is causing the problem, you need to put your computer in a Clean Boot State. To do so, follow the steps below.

• 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.)
• Once your computer has restarted in a Clean Boot State, perform your scan again and see if it now works, and then start to isolate the problem by checking which one of the programs you installed recently is the root cause of the problem.

Option 6 – Try to uninstall the programs you’ve installed recently

In case you don’t know, freeware software packages aren’t always free as some of them could contain malicious software that can cause serious damage to your computer. Thus, if you have installed a program recently prior to getting the “System call failed” error, then you have to uninstall that program.

• Tap the Win + R keys to open the Run dialog box.
• Then type “appwiz.cpl” in the field and tap Enter to open the Programs and Features in Control Panel.
• Next, arrange the list of installed programs in the order of the installation date.
• After that, look for the problematic program and right-click on it, and then select Uninstall.
• Once the process is done, restart your computer and see if the error is fixed.

Stop C00002lA Fatal System Error- What is it?

C00002lA Fatal System Error is a blue screen of death error that may occur when you start your Windows NT 4.0 based computer. This error causes the screen to turn blue and the system also shuts down. The stop C000021A error message is displayed in the following format:

Stop c000021a {Fatal System Error} The session manager initialization system process terminated unexpectedly with a status of 0xc0000017 (0x00000000, 0x0000000) The system has been shut down.

Error Causes

The stop C000021A error occurs when either Crsrss.exe or Winlogon.exe fails. When the Windows NT kernel identifies that either of these processes has failed, it stops and the error code stop C000021A appears on the computer screen. Here are some of the underlying causes for the stop C0000021A error:

• The incompatible third-party program
• Hard disk issues
• Service pack installation has failed
• Mismatched system files have been installed
• Bad and invalid registry keys

Further Information and Manual Repair

To resolve the stop C000021A Fatal System Error on your PC try the following solutions:

• Remove Incompatible Third Party Programs

If the error occurred after you recently installed a new program, then it is advisable to remove that program. The error occurs due to the incompatibility of the program. To remove the program go to the start menu and click on the control panel. Now click on Add/Remove Program tab and double click on the program name that you recently installed and remove it from the list. Once removed, not reboot your PC. Reinstall a compatible program and run it. It is most likely to resolve the issue. However, if the stop C000021A error still occurs, then it means the problem is critical. It is related to the registry.

• Repair and Restore the Registry

This procedure is slightly long and tricky. To try it, you need to be technically sound. Here’s what you have to do: first create a parallel installation of Windows NT. Start your PC to the parallel installation and then open the Registry Editor. On the Registry Editor’s Windows menu click HKEY_LOCAL_MACHINE on Local Machine and then click Load Hive. Now type the path %systemroot%system32configsystem into the System hive of the prior installation. Then click open. Here you will be prompted to enter the name of the key, type TEST. Note the setting for the current DWord value in the preceding registry key. This is 0x1 and is denoted by CURRENT:Reg_Dword: 0x1. This value indicated that the Current Control Set for your original Windows NT installation corresponds to ControlSet001 in this window. Now if the value is 2, it indicated that the Current Control Set corresponds to ControlSet002. Now locate the following registry key: HKEY_LOCAL_MACHINETESTControlSetXXXControlSession Manager. XXX is the Current Control Set Value. And delete any pending file rename operation entries. Then click TEST hive and then click Unload Hive. After that again repeat the process, open the registry menu and click load hive, here type the path %systemroot%system32configSoftware to the Software hive of the prior installation and then click open. Now you type TEST 2 when you are prompted for the name of the key. Remove any pending file rename operations entries in the following registry keys: HKEY_LOCAL_MACHINETEST2MicrosoftWindowsCurrentVersionRunOnce HKEY_LOCAL_MACHINETEST2MicrosoftWindowsCurrentVersionRunOnceEx Now click TEST2 hive and then click unload hive. Quit the Registry Editor and then restart your original installation. This will resolve the stop C000021A error.

Code 39 - What is it?

Code 39 is a device driver error code that pops up when the Windows operating system cannot load the driver for the hardware you want to use.

This hampers your ability to use the hardware properly. The error code is almost always presented in the following format:

“Windows cannot load the device driver for this hardware. The driver may be corrupted or missing.” Code 39

Error Causes

A device driver is a software program that tells the operating system how to control a particular hardware device. Each hardware device has a different driver.

There are separate device drivers for printers, CD-ROM readers, and keyboards, to name a few.

Many device drivers are already built into the operating system. But sometimes you will need to install a new device driver when you want to use a new piece of hardware device that the operating system is not familiar with, or does not anticipate.

Regardless of whether or not the drivers are already integrated into the operating system, you may still experience code 39, typically because of the corrupted or outdated drivers.

Outdated and corrupted drivers cause hardware malfunction and failure, which trigger device driver error codes like code 39. Other causes include incorrect registry values.

Further Information and Manual Repair

Below are some of the easiest and most effective methods to resolve Device Manager error code 39 on your PC.

To follow and implement these methods, you don’t require any technical knowledge or expertise. Simply follow these instructions to fix the error right away.

Method 1 - Fix with a Simple Reboot

There is a possibility that the error code 39 is caused by some fluke within the Device Manager or your BIOS.

If that’s the reason, then a simple PC reboot can resolve the issue immediately. Therefore, before you try anything, it is advisable to restart your system.

If it works, then that is great, but if it doesn’t, then don’t worry, try other methods given below to fix this problem successfully.

Method 2 - Uninstall and Reinstall Drivers

If the error code 39 is generated due to faulty or outdated drivers, then simply uninstall and remove them and then reinstall new driver versions. There are two ways to remove faulty drivers.

Method One

• One is, to go to the start menu, click on Control Panel, and then Add/Remove Programs.
• Remove the program and the driver you think is causing problems. This will thoroughly remove all traces of the faulty driver.
• To reinstall, follow the same steps but this time install the new device driver version.

Method Two

• The other way is to go to the start menu, type Device Manager in the search bar, and then press enter to continue.
• In the Device Manager, find and locate the problematic device.
• After that, double-click the category of device that you wish to uninstall. Let’s say, Windows is unable to load the graphics card driver.
• This means you will have to click on the Display Adapter category in the Device Manager to uninstall the graphics card.
• After you have successfully uninstalled, Windows will prompt you to confirm device removal.
• Simply click OK to confirm and proceed. To activate the changes, restart your PC.
• To reinstall, go to the Device Manager, click on the Action tab and then select the option ‘Scan for Hardware Changes.’

This method, although effective in resolving error code 39,  can be time-consuming. To avoid the hassle and save time, try method 3.

Method 3 - Update Drivers Automatically with DRIVERFIX

If you would like to read more helpful articles and tips about various software and hardware visit errortools.com daily.

Error Code 0x8000ffff - What is it?

Error Code 0x8000ffff is an error that is often experienced while attempting to install updates on a Windows machine. It has been found in Windows 10, although the error has been present in the Windows operating systems dating back to Windows Vista.

Common symptoms include:

• Inability to download updates for the operating system
• Inability to successfully run updates for the operating system through to completion

There are several basic Windows tools that can be used to attempt to resolve Error Code 0x8000ffff on your machine. While some of these tools may be familiar for basic users, others may require advanced competency in order to be used correctly. If you are unsure of your ability to complete the methods listed below in order to resolve this error code on your system, you may need to get in touch with a computer repair technician who is competent in dealing with Windows Update repairs.

Solution

Error Causes

The most common cause of Error Code 0x8000ffff is that there is a problem within one of the system files or the registry entries on the computer. There are a number of reasons why a device could have an error in these places, from conflicting software commands to updates that were not installed correctly, to bugs within the system, to viruses or malware that have corrupted the necessary files.

Further Information and Manual Repair

There are several common ways that users can attempt to resolve the appearance of Error Code 0x8000ffff on their Windows devices. If you are not sure that you can follow these steps through to completion, you would be well advised to get in touch with a qualified computer repair technician to help you to finish out the repair process.

Here are the best methods to resolve Error Code 0x8000ffff on your Windows machine:

Method One:  Restart Your Computer

It may sound obvious, but one of the most effective ways to resolve Error Code 0x8000ffff on your machine is to simply reboot your computer. In some cases, the error shows up because there are processes that the system believes are still running when they really aren’t. Restarting your machine also allows your system to apply any previous changes that have been made and to mark any installations that have been undertaken as being complete.

Reattempt your update installations after you have restarted your computer to see if you are able to finish them out successfully.

Method Two:  Run the Windows Registry Repair Tool

The Windows Registry Repair tool is an asset that can make it easy for your system to scan for potential problems in the registry and notify you as to their status. In many cases, the Registry Repair tool can fix the problems that it finds all on its own, although in some cases, you may receive a message that states an error was found that could not be resolved through the program.

The simplest way to access the Windows Registry Repair tool is to do a search for it within the search bar in the Start menu. Once you begin to run the Registry Repair tool, it can take a while to complete its scan, so be prepared to wait for some time once you start it.

Once the tool has completed its scan of your system, it’s always a good idea to reboot your computer so that all of the changes that have been made to the system can be applied successfully to the operating system.

Method Three:  Run the Windows Fix It Tool

Another great tool to help in the resolution is the Windows Fix It tool. You can download it directly from the Microsoft website. Once you run it, it will complete a scan of your system to find any potential hang-ups and to attempt to resolve them. After you run the scan, it is a good idea to reboot your computer to allow all changes to be recognized and applied properly.

Method Four: Use An Automated Tool

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