Fix MS Store error code 0x80073d12 in Windows

As you know, Microsoft’s Windows Media Creation Tool is a useful tool that helps you download and install the latest version of the Windows 10 operating system. However, there are times when it could encounter some problems during the update process. One of these programs is the following error message:

“0x8007001F-0x20006, The installation failed in the SAFE_OS phase with an error during REPLICATE_OC operation.”

The error pointed out the “Safe OS phase”. It is the phase that’s initiated to install all the required Windows Updates. Thus, the possible cause for this error could have something to do with an interrupted download, internet connection, and many more. Although this error could be caused by a lot of factors, fixing it shouldn’t be that hard. You can try to reset the Windows Update Components or delete the Windows Update cache. You could also disable both the Firewall and your antivirus program temporarily or run the Windows Update in a Clean Boot state, as well as run the Windows Update troubleshooter. To get started troubleshooting the error, follow each one of the suggestions provided below.

Option 1 – Try to reset the Windows Update components

Resetting the Windows Update components could help you resolve the Windows Update error 0x8007001f – 0x20006. How? Refer to the following steps:

• Open Command Prompt with admin privileges.
• After that, type each one of the following commands and hit Enter after you key in one after the other.
  • net stop wuauserv
  • net stop cryptsvc
  • net stop bits
  • net stop msiserver

Note: The commands you entered will stop the Windows Update components such as Windows Update service, Cryptographic services, BITS, and MSI Installer.

• After disabling WU components, you need to rename both the SoftwareDistribution and Catroot2 folders. To do that, type each one of the following commands below, and don’t forget to hit Enter after you type one command after the other.
  • ren C:WindowsSoftwareDistribution SoftwareDistribution.old
  • ren C:WindowsSystem32catroot2 Catroot2.old
• Now, restart the services you’ve stopped by entering another series of commands. Don’t forget to hit Enter after you key in one command after the other.
  • net start wuauserv
  • net start cryptsvc
  • net start bits
  • net start msiserver
• Exit Command Prompt and then restart your computer.

Option 2 – Try to delete the Windows Update Cache

You might also want to delete the Windows Update cache since there are times when existing corrupt or incomplete Windows Update files can cause some problems in downloading and installing Windows Updates. To achieve this, simply delete the “$Windows.~BT” & “$Windows.~WS” folders in your computer. Once you’re done, try to run Windows Update again and see if the error is now fixed.

Option 3 – Try to temporarily disable anti-virus and Windows Defender Firewall

As mentioned, the error could be due to the antivirus program or the Windows Defender Firewall installed on your computer. Thus, disabling them or any security software installed in your computer is always a good idea you can try when you’re not able to access the shared drive on your computer. There are times when you encounter problems like error 0x8007001f – 0x20006 due to interference of antivirus or security programs. Thus, you have to disable both your antivirus program and Windows Defender Firewall for the meantime and check if it fixes the error or not

Option 4 – Run the Windows Update in a Clean Boot State

It is possible that some third-party application is the one that’s causing the problem so it’s best if you put your computer in a Clean Boot state. During this state, you can start the system with a minimum number of drivers and startup programs that will surely help you in isolating the root cause of the issue.

• 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.)
• After that, try to run Windows Update again.

Note: If you are able to install the app without any trouble at all then it means that the error is caused by some third-party application on your computer. You need to look for the culprit and uninstall it once you found it.

Option 5 – Run the Windows Update Troubleshooter

You might also want to run the Windows Update Troubleshooter as it could also help in fixing error 0x8007001f – 0x20006. To run it, go to Settings and then select Troubleshoot from the options. From there, click on Windows Update and then click the “Run the troubleshooter” button. After that, follow the next on-screen instructions and you should be good to go.

When it comes to downloading and installing games in the Windows operating system, Steam is one of the well-known sources. You can find many big titles in Streams such as PUBG, Heaven Vaults, and a whole lot more. It is undeniably a great source of getting games in the Windows operating systems. However, just like other software, Steam is not immune to errors as you could encounter errors while using it. This isn’t caused by a bad code but also due to reliance on various factors in both respects to the software and hardware. One of these errors is the Application Load Error 5:0000065434. This kind of error can appear when you launch numerous game titles on your Windows 10 computer like Skyrim, Oblivion, Bully, Morrowind, Vortex, and many more. To fix this application error in Steam, you can try to copy the Steam executable file or use the Command Prompt. You could also try to verify the integrity of the game files feature or delete any conflicting files on your computer.

Option 1 – Try copying the Steam executable file

The first thing you can do to fix the error is to copy the executable file of Steam.

• First, right-click on the desktop shortcut of steam located on your Desktop and click on the “Open file location” option.
• After that, copy the executable file for Steam and navigate to the folder of the library of the games which is usually located in SteamSteamAppsCommon
• Now paste the Steam executable file you just copied inside the folder of the game and see if it fixes the error or not.

Option 2 – Try to use the Command Prompt

• In the Start Search, type “command prompt” and right-click on Command Prompt from the search results and then select the “Run as administrator” option.
• After opening Command Prompt as administrator, execute the following command:

cd "C:Program Files (x86)Steamsteamappscommon" mklink "steam.exe" "C:Program Files (x86)Steamsteam.exe"

• The command you entered will create a link between the executable file of Steam to the operating system. Once you see a message that states, “Operation completed successfully”, restart your computer.

Option 3 – Try to use the “Verify integrity of the game files” feature

The next thing you can do to get rid of the error is to use the “Verify integrity of the game files” feature. How? Refer to these steps:

• Open Steam and right-click on the entry of the game where you encountered the error in the Library and then select Properties.
• After that, navigate to the LOCAL FILES tab and click the “VERIFY INTEGRITY OF GAME FILES” button.
• Wait for the process to be completed and see if the feature has helped in fixing the error or not.

Option 4 – Try to delete any conflicting files

The error might be caused by some conflicting files on your computer which is why you have to delete them. To do that, follow these steps:

• Open the Documents folder and look for the folder created by the game that’s throwing the error. For instance, it could be stored in the “My Games” folder.
• Next, delete the folder and then try to launch the game again and see if the error is now fixed.

Instagram posting has been reserved for mobile phones for a very long time but in October 2021 that privilege has come to an end. Instagram added the long-awaited ability to post to Instagram from the website. You get nearly all of the same filters and editing tools that you can find in the iPhone and Android app, too. In order to post via computer on your Instagram account all you need is a browser. The first step, of course, is to go to instagram.com and login into your account, if you do not have an account, you can make one for free. Next, click on the + icon in the upper right corner. Create a new post screen will open, in this screen click on the Select from computer blue button on the bottom. The file manager will open, choose your desired photo and confirm. After that, you will be presented will an adjustment screen for a photo, here you can crop the photo, zoom in, adjust the aspect ratio, or if you wish add more photos to create a slide show. Once you are done will all of these adjustments, click on Next in the upper right. From there you will be taken into a filter screen where you can apply one of many filters or if you want, you can adjust brightness, contrast, saturation, temperature, etc. just like in the application on your phone. Once you have the desired result, again click on Next in the upper right part of the screen. Lastly, you will be given an option to write a caption for the photo if you wish and add a location. Once this step is finished you can post the feed by clicking on share in the upper right part. That is all to it, just like in a mobile application you can now use your computer for Instagram posting.

Besides Star Trek, Star Wars was one of my favorite movie franchises, as a kid, it was the first movie I have seen in Theatre and over the years I have rewatched and reached each entry in the franchise. It has significantly grown over the years, sometimes for worse, sometimes for better but what it always did is explored and expanded lore, characters and brought stories interesting and original enough. The Series has always been original and innovative enough with interesting characters and locations and it managed to capture the imagination of many viewers around the globe. If you or someone else is watching the franchise for the first time it is recommended actually to watch everything how it was released because of some information that is spoiled in prequels that could spoil some interesting revelations later. But if you have already watched everything and would like to follow the story from the beginning to end we are presenting you with the list of all TV series and movies in tar Wars canon in their chronological order so you can enjoy some good character developments and see the whole story unfold how it was meant to be. In the following list, as told, we are including TV series (both released and currently in production) in the Star Wars canon.

Chronological order of Star Wars franchise:

Star Wars: The Acolyte Acolyte is upcoming TV series exploring times in the old republic and the rise of the dark side within Star Wars Episode I: The Phantom Menace The first movie entry in the franchise introducing some key characters who will go through various adventures yet to come Star Wars Episode II: Attack of the Clones Continuation of story and deepening of the plot laid out in the previous movie Star Wars: The Clone Wars Animated TV series exploring war in more detail, set in the period between episodes 2 and 3, before series there is clone wars full length animated movie titles simply as Star wars clone wars serving as a pilot to series. Star Wars Episode III: Revenge of the Sith Last movie in so-called prequel trilogy finishing some stories and finalizing some character arcs Star Wars: The Bad Batch Upcoming animated series Bad batch will focus on few troopers find their way in changing the galaxy Solo: A Star Wars Story Story of everyone loved Han Solo character, this origin story will introduce you to some key characters in the later entry of series Obi-Wan Kenobi Upcoming series that will focus on everyone's favorite JEDI master Obi-Wan Star Wars Rebels Animated series exploring first sparks of forming rebel alliance against dreaded empire Andor Upcoming series set five years before the events of Rogue One, the series follows rebel spy Cassian Andor during the formative years of the Rebellion. Star Wars Rogue One Full feature movie setting up events for episode 4 Star Wars Episode IV: A New Hope First Star Wars movie, little outdated today with special effects but with a strong story and introducing some new characters which will become main icons of franchise Star Wars Episode V: The Empire Strikes Back Arguably the best movie in the whole series, leaning more to serious note and darker than previous entries. Besides Episode 3 this is the most serious and dark movie of the series. Star Wars Episode VI: Return of the Jedi Last movie entry in the so-called original trilogy, finishing some stories and wrapping up one era. Star Wars The Mandalorian Set after episode 6 show focuses on a Mandalorian bounty hunter character following his adventures in the galaxy. The Book of Boba Fett Upcoming Mandalorian spin-off TV series focusing on Bobba Fet, one of most loved bounty hunter characters in the Star Wars universe Ahsoka Star Wars: Ahsoka is an upcoming live-action television limited series exploring the character of Ashoka Tano first seen in Clone Wars Rangers of the New Republic Set within the timeline of The Mandalorian, Rangers of the New Republic is a new upcoming live-action series. Star Wars: Resistance Animated series exploring resistance against first-order setting up events to be followed in the newest trilogy of movies. Star Wars Episode VII: The Force Awakens First full feature movie set in the post-empire era introducing new characters and bringing back some fan favorites. Star Wars Episode VIII: The Last Jedi The second movie in the last order trilogy, continuing stories of previously establishes characters Star Wars Episode IX: The Rise of Skywalker Last entry in new order trilogy of movies, finishing some open stories and concluding arcs for characters previously introduced in Force Awakens. That's it, chronological order of canon TV shows and movies of the Star Wars franchise. We are sure there will be more movies and shows in the future and someday we will revisit this list to include them as well. Until then, may the force be with you. If you would like to read more helpful articles and tips about various software and hardware visit errortools.com daily.

As you know, the Videos folder can be found under “This PC” by default on your Windows 10 computer. However, as per the reports of some users, there are a few occasions where it somehow gets replaced by the Documents folder. In other words, the Videos folders are replaced by a duplicated copy of the Documents folder. Out of the two Documents folder, one Document folder will contain all the usual files and subfolders while the second one is empty. Although when you click the Documents icon on your Desktop (if you have a shortcut), it will still take you to the right Documents folder. To fix this particular issue and get the Videos folder back in the File Explorer, here are some potential fixes that should help.

Option 1 – Run System Restore

The first thing you can try to do to resolve the problem is to run System Restore. This can help you go back to the previous state of your computer before the issue with the Videos and Documents folder.

• Tap the Win + R keys to open the Run dialog box.
• After that, type in “sysdm.cpl” in the field and tap Enter.
• Next, go to the System Protection tab then click the System Restore button. This will open a new window where you have to select your preferred System Restore point.
• After that, follow the on-screen instructions to finish the process and then restart your computer and check if the problem is fixed or not.

Option 2 – Try to restore Defaults

The next thing you can do is to restore Defaults. How? Refer to these steps:

• Open File Explorer and then right-click on any of the two Documents folders.
• After that, select the Properties option from the context menu and switch to the Location tab and click on Find target.
• Next, copy the address and paste it in the field above the “Find target” option, and then click the “Restore Default” button.

Option 3 – Try to change the Registry Path

• Tap the Win + R keys to open the Run dialog box.
• Then type “Regedit” in the field and tap Enter to open the Registry Editor.
• Next, navigate to this registry path: HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionExplorerUser Shell Folders
• After that, edit the path for {35286A68-3C57-41A1-BBB1-0EAE73d76C95} under the “User Shell Folders” key to match the path shown for My Videos: %USERPROFILE%Videos.
• Once you’re done, open the folder under “This PC” that has the Documents icon and tap Shift + right-click in the folder background, and then select the “Open PowerShell window here” option to fix the naming of the Documents folder. The path should read: “C:users<UserName>Documents.
• Next, execute this command: ri desktop.ini –force
• The command you entered will delete the files and folders and so when added for Documents, it will get rid of the empty Documents folder.
• Now all you that’s left to do is to find where the target location is going to be for both folders and check if anyone foes to the user name location.
• Then delete the one which goes to the incorrect location.

Windows 11 will bring some old applications in new looks and some will get additional features as well. One of the old apps that will get new stuff is a calculator. The calculator was always a way to go application for quick calculations but Microsoft aims to expand on that and make the calculator a little more useful. The first thing that you will notice is the calculator look, the calculator has now an application theme setting that allows you to change the look of the application. It comes in standard and professional mode as usual but this time calculator will come with features that will enable it to handle some programming and engineering tasks. The new calculator features a full graphing mode that lets you visually analyze a graph to identify key features. It also packs a deep converter that can switch between more than 100 units and currencies.

Other Windows 11 apps

A new snipping tool will be delivered with this latest update as well packed with new functionality. We have covered new features of the snipping tool in another article, if you are interested you can find the article here: https://errortools.com/windows/new-snipping-tool-redesigned-in-windows-11/ Mail and Calendar apps will also get a redesign, sadly all redesign that they will include will be of visual nature to fit in the overall Windows 11 theme, functionality will remain the same.

During Windows 10 installation, you will see all the beautiful user interfaces, however, what’s more, important are the drivers, your processor, and free storage disk in order for the installation to be successfully completed. So if you are getting the CompareExchange128 error during the installation of Windows 10, this means that the CPU lacks a very important instruction known as “CMPXCHG16B”. Thus, if you don’t have CMPXCHG16B, then it will result in the CompareExchange128 error when you install Windows 10. In fact, CMPXCHG16B, PrefetchW as well as LAHF/SAHF is a criterion for you to be able to use Windows 10 64-bit version when upgrading from an earlier version of Windows. So what exactly is the CMPXCHG16B instruction? The CMPXCHG16B instruction is the one that performs an atomic compare-and-exchange on 16-byte values. This instruction can also be referred to as “CompareExchange128”. The atomic compare-and-exchange means that the CPU compares the contents of a memory location with a given value. So if the values are the same, it modifies the contents of that memory location to a new given value. Note that this kind of issue only happens to the 64-bit Windows 10 version and the only way to resolve it is by getting an update on the hardware level from the OEM. On the other hand, if nothing really works, it’s maybe time for you to get a new CPU but before you resort to that, in the meantime, you can try following the options given below to fix the CompareExchange128 error during the installation of Windows 10.

Option 1 – Try to update the BIOS and Chipset Drivers

One of the best things you can do to fix the CompareExchange128 error is by updating the BIOS and chipset drivers which is why you need to check if your OEM has an update available for your computer’s BIOS as well as the related chipset drivers. But before that, you need to first check the BIOS version. To do so, follow these steps:

• Type “msinfo32” in the search bar and hit Enter to open the System Information Tools.
• After opening the System Information Tools, check the BIOS version.
• Then take note of that BIOS version. You also need to use the BIOS utility that came with your computer and use it for the upgrade. Note that it is different for every computer and if you don’t have it, you can just go to the OEM website and see if there is an option to download it there.

Option 2 – Try to downgrade to the 32-bit Windows 10 version

If option 1 didn’t work as the BIOS update is not available, you can also try downgrading to the 32-bit version of Windows 10. Keep in mind that this will bring restrictions on the amount of RAM installed and other places but that won’t be a problem as you can still switch.

Option 3 – Try buying a new hardware

If none of the first two options didn’t work for some reason then maybe it’s time for you to purchase new hardware especially if your computer is way too old. In such cases, it’s better to buy new hardware or better yet, a new computer that can keep up for the next couple of years.

Next-generation of RAM, DDR5 supposed to hit shelves around late summer or fall in 2021if everything goes as planned. Its goal is to increase speed and efficiency, wants to pack more memory in a single stick, and have better power management.

Hardware requirements for DDR5

Using the latest memory technology will require other hardware to follow certain standards and the first ones that will need to follow are CPUs and Motherboards. Intel is already prepared with its Alder Lake CPUs that suppose to come out also later this year. AMD on other hand has not stated anything at the time of this writing but it is a bet that their next generation that will come in 2022 will have full support. It is speculated that bot companies and their respective CPUs will have both support for DDR4 and DDR5. A story about motherboards is a little different. Motherboards will support DDR4 or DDR5 memory banks, not both, so make sure that your motherboard will support the memory you plan on getting.

Capacity of memory

The goal and aim for the DDR5 memory stick are to reach a whopping 126GB per stack. This will be done by using a dual in-line module or DIMM enabling larger capacity. That being said, the first modules that we will see are more likely to be 16GB as standard and 8GB as low entry ones.

Power consumption of DDR5 memory

The standard voltage that DDR4 operates under is 1.2V. DDR5 wants to lower this to 1.1V without sacrificing speed. Voltage regulation on modules themselves will be now integrated on memory banks instead of leaving that to motherboards which will help to detect memory errors directly on the memory bank.

Speed of memory

The most common speed of DD4 memory banks is 2,666MHz, more expansive ones go from 3,600 to 4,000MHz. DD5 aims to raise this bar to 4,800MHz and offers greater speed.

Should you get it right away?

Hardware is ever-evolving, we have PCIe 3.0 to PCIe 4.0, and taking into account that sometimes the newest tech can cause some unexpected behavior it is always the best strategy to wait for a little. Price for the newest tech has also been in its heist just when it is released and seeing how DDR5 will benefit mostly servers mostly since even today memory, processors, and other available equipment can tackle all daily tasks.

If you get an Error Code 15 or Error Code 16 while you are browsing the web and you notice that your access is blocked to a particular website, then read on as this post will guide you in resolving this problem. Both Error Code 15 and Error Code 16 have the same message that states, “Access Denied: This request was blocked by the security rules”. Note that the error depends on what kind of browser you are using, as well as the operating system and network that you are using. On the other hand, the fixes for this error are the same and there is a handful of them that you can check out just make sure to follow each one of them carefully.

Option 1 – Sync 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 Error code 15 or Error code 16. 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.

• Right-click on the Taskbar and click on the Adjust Date and Time option.
• Next, click on the Sync Now button to synchronize the Date and Time with the Microsoft Servers.
• Now make sure that the Time Zone that’s set on the same page is correct.

Option 2 – Try to reset the affected browser

Resetting the affected browser might help in fixing Error Code 15 or Error Code 16.

Mozilla Firefox

• Open Firefox and click the icon that looks like three stacked lines located at the top-right section of the browser.
• Next, select the question mark icon from the drop-down menu.
• Then select “Troubleshooting information” from the slide-out menu.
• After that, click on the “Reset Firefox” button located at the top-right section of the newly opened web page.
• Now select “Reset Firefox” in the confirmation pop-up window that appears.

Google Chrome

• Open Google Chrome, then tap the Alt + F keys.
• After that, click on Settings.
• Next, scroll down until you see the Advanced option, once you see it, click on it.
• After clicking the Advanced option, go to the “Restore and clean up option and click on the “Restore settings to their original defaults” option to reset Google Chrome.
• Now restart Google Chrome.

Internet Explorer

• Launch Internet Explorer.
• Next, click the wrench icon for Settings.
• Then click Internet Options.
• After that, go to the Advanced tab.
• From there, click the Reset button. This will reset Internet Explorer’s settings to their default condition.
• Now click OK to save the changes made.

Option 3 – Temporarily disable Firewall and third-party antivirus

Firewall and antivirus programs are known to block files the instant it detects a threat to the system. However, there are some cases when it can also block a file even when it’s a safe one. Thus, your antivirus or firewall programs might be the reason why you can’t download anything on your Windows 10 computer. To isolate the issue, you need to temporarily disable both the Firewall and antivirus programs and then check if you can now download anything from the internet. Do not forget to enable them again as disabling them can leave your computer vulnerable to cyber threats.

Option 4 – Disable the Proxy server

You can also try to disable the Proxy server for your LAN to fix Error code 15 or Error code 16 especially if your computer was attacked by some malware or adware recently. In such cases, there is a chance that the malware or adware has changed your network settings in order to generate intrusive advertisements. Thus, you have to disable the proxy server and you can do that by following these steps:

• Tap the Win + R keys to open the Run dialog box.
• Then type “inetcpl.cpl” in the field and hit Enter to pull up the Internet Properties.
• After that, go to the Connections tab and select the LAN settings.
• From there. Uncheck the “Use a Proxy Server” option for your LAN and then make sure that the “Automatically detect settings” option is checked.
• Now click the OK and the Apply buttons.
• Restart your PC.

Note: If you are using a third-party proxy service, you have to disable it.

Option 5 – Check your VPN

If you are using a VPN application, there are times when it causes some issues like this error. If that’s the case, you can try to disable your VPN temporarily and see if the error is resolved or not and if turns out that your VPN is the culprit, you have to uninstall it and install a new one or its latest version. To uninstall it, follow the steps below.

• Tap the Win + R keys to open the Run dialog box
• Then type “appwiz.cpl” in the field and hit Enter to open the Programs and Features in Control Panel.
• From there, look for the VPN service you are using, select it and then click on Uninstall to remove it.
• After that, restart your computer and try to install the latest version of the program again. It should work now. If not, proceed to the next available option below.

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.