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Windows stop code 0xca and How to Fix It | DiskInternals

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Many users report getting this stop code after upgrading Windows 10 to a newer edition. Because of this, you might be tempted to turn to a professional for help. Windows stop code 0xca can be caused by Winlogon. In this case, you have to fix the malfunctioning processes.

Windows 10 should start now. If Safe Mode was successful, you can run a clean Windows 10 boot to make the changes permanent, at least until you get the chance to thoroughly troubleshoot the 0xca error. You can troubleshoot the errors that prevent your operating system from booting by running the Startup Repair tool in the troubleshoot menu before boot.

However, you need to use your Windows 10 installation disc. In turn, this leads to the 0xca error. Hard disk failure could cause problems with the Winlogon.

To repair corrupt operating files such as Winlogon. But you should be able to solve this problem by using a driver update tool in Safe Mode. Or, you can update drivers without having to install any third-party applications:. If you get the The best drivers for your device are already installed message for any driver, click Search for updated drivers on Windows Update.

You just have to do this once since Windows Update should download and install all available drivers. Make sure to get drivers that are compatible with your devices and operating system. Then, retrace the steps above but choose Browse my computer for drivers to perform a manual installation.

Unsupported drivers can cause serious problems on your computer, including blue screen errors like 0xca. After disabling Driver Signature Enforcement see Solution 4 , you should roll back these malfunctioning drivers to be able to update them correctly.

The Windows registry could have corrupt entries that are essential for system boot. However, you can restore the registry to its default configuration from the command-line environment before boot.

For instance, two antivirus solutions with distinct real-time engines are likely to clash and cause blue screen errors. To solve this problem, you just have to uninstall any programs added to your PC lately:. Not only software applications but also malfunctioning system updates can be dangerous for your computer. You can remove them before boot:.

If you have recently attached new devices to your computer, such as a Wi-Fi adapter, a webcam, a printer, or a USB pen drive, there could be compatibility issues that result in BSOD errors like 0xca. It can even happen with plug-and-play devices. An incorrect BIOS configuration could be fatal for your computer. If you or someone else with access to your PC has accessed BIOS mode in order to enable overclocking, shadowing, caching, or something else, you should restore the BIOS configuration to default to remain on the safe side.

BIOS needs to be regularly updated, just like software applications or your operating system. If you have never done this, you should get on it right away.

But you need to use a pen drive and a working computer to download the BIOS installation files. Here are the complete steps:. Fast Boot preloads the Windows drivers in order to boot your PC faster.

You can use this information to perform an online search and discover more workarounds for your specific problem.

You can roll back Windows 10 to a restore point that was recorded on your PC before you started experiencing error code 0xca. However, this means losing all applications installed after the restore point was created. A likely scenario is that a malware agent infected your computer and damaged the Winlogon.

However, you can check the system memory without having to install third-party software applications, thanks to the internal utility named Windows Memory Diagnostic. Before Windows boot, Windows Memory Diagnostic will run a standard test to evaluate the system memory. However, we suggest performing an extended text since it shows more relevant information. Press F1 to visit the options area, select Extended , and press F10 to confirm. You might have to remove and reset the RAM card and then perform a new test using this tool.

However, if the memory card is malfunctioning, you must replace it with a new one. If you have created a system backup at some point on your computer, you can use System Image Recovery to restore the backup and regain the functionality of your operating system. Before doing that, though, you can create and use a Linux live distro to access your hard disk files and create backups.

You just need a tool that creates bootable USB drives, like Rufus, a user-friendly Linux distro like Ubuntu, and a working PC for creating the live disk. Once you have successfully backed up your files and application keys using a Linux live distro like Ubuntu, you can focus on repairing your operating system. And the easiest way to do this is by resetting Windows 10 to factory mode.

However, all applications and files will be deleted. To review, 0xca is a Blue Screen of Death error that usually occurs when the Winlogon. There are multiple approaches to fixing this problem at both software and hardware level. For instance, you can start Windows 10 in Safe Mode with or without networking features, perform a clean system boot, run Startup Repair, disable Driver Signature Enforcement, fix hard drive corruption and damaged system files, update old drivers or roll back unsupported ones, repair the system registry and BCD, as well as uninstall third-party apps or system updates.

Before doing so, however, you can create and use a disk with a Linux live distro like Ubuntu to access your hard drive and back up important files and application serial numbers. How did you manage to get rid of the 0xca stop code? Tell us all about it in the comments below. Save my name, email, and website in this browser for the next time I comment. Necessary cookies are absolutely essential for the website to function properly.

This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website. Clean boot Windows 10 If Safe Mode was successful, you can run a clean Windows 10 boot to make the changes permanent, at least until you get the chance to thoroughly troubleshoot the 0xca error.

Do this for all enabled apps Restart your computer 3. Run Startup Repair You can troubleshoot the errors that prevent your operating system from booting by running the Startup Repair tool in the troubleshoot menu before boot. If it displays the The operation completed successfully message, try to boot Windows Fix hard drive corruption Hard disk failure could cause problems with the Winlogon.

Do this for multiple drive letters until you spot the Windows folder 6. Repair corrupt system files To repair corrupt operating files such as Winlogon. Or, you can update drivers without having to install any third-party applications: Start Windows 10 in Safe Mode with Networking After the system boots, right-click the Start button and select Device Manager Double-click a device to access its properties Switch to the Driver tab and inspect the Driver Date.

Do this for all outdated drivers If you get the The best drivers for your device are already installed message for any driver, click Search for updated drivers on Windows Update. Roll back incompatible drivers Unsupported drivers can cause serious problems on your computer, including blue screen errors like 0xca.

Repair the system registry The Windows registry could have corrupt entries that are essential for system boot. To solve this problem, you just have to uninstall any programs added to your PC lately: Start Windows 10 in Safe Mode Right-click the Start button and go to Apps and Features Set Sort by to Install date to view the latest programs first Select the first app in the list, click Uninstall , and again to confirm Do this for all programs recently installed Try to boot your OS normally now Uninstall system updates Not only software applications but also malfunctioning system updates can be dangerous for your computer.

Unplug external devices If you have recently attached new devices to your computer, such as a Wi-Fi adapter, a webcam, a printer, or a USB pen drive, there could be compatibility issues that result in BSOD errors like 0xca.

Roll back Windows 10 You can roll back Windows 10 to a restore point that was recorded on your PC before you started experiencing error code 0xca. You can also click Scan for affected programs to see which applications will be lost Click Next and follow the remaining instructions. Your PC will restart to complete the operation Run a malware scan A likely scenario is that a malware agent infected your computer and damaged the Winlogon.

Run System Image Recovery If you have created a system backup at some point on your computer, you can use System Image Recovery to restore the backup and regain the functionality of your operating system. F12 Choose the USB flash drive and press Enter to boot Ubuntu Once Ubuntu boots, copy all important files from your hard drive and write down all serial numbers from your licensed software applications Reset Windows 10 Once you have successfully backed up your files and application keys using a Linux live distro like Ubuntu, you can focus on repairing your operating system.

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Windows 10 boot error 0xc00021a free download

 

We understand the inconvenience caused and we will try our best to resolve the issue. As you are unable to boot in the system, I suggest you to download the media creation tool to install windows 10 and create Windows 10 installation DVD media and try Repairing your Computer.

Press any key. Click Repair your computer in the lower left corner. Hope it helps, reply to us with the status of your issue. We will be happy to assist you. Was this reply helpful? Yes No. Sorry this didn’t windows 10 pro license key ebay download. Thanks for your feedback. Thanks for trying to help. So far nothing has worked. Made the media creation tool and the first time I put it in gave me choices.

I should have picked Safe mode, but instead picked a boot one. That did not work. Адрес I windows 10 boot error 0xc00021a free download get back to that screen. I get into the same loop. I started the computer and held down F11 in order to get the DVD to boot up. When it did get to a screen it was blue not grey and Продолжение здесь got the square symbol till it either went into the same loop.

I finally got to a screen that is giving me a choice of continue with upgrade, or do clean install. The upgrade does not work. I am scared to try the clean install as I don’t know if it is going to wipe out all my files, or even Windows 7!! I had got a update on windows I ran Advanced System Care Proand it said it needed to check my disc for errors of which it found one.

So I think it was going to try to fix it on start up. Then it never would go to my desktop as Windows wanted to fix my disc. And hence this loop I am in.

So now I don’t have a clue what to do. I never had trouble with Advanced System care before. I have ran it on all the computers I have. Any more help you can give me would be so appreciated as right now windows 10 boot error 0xc00021a free download computer is just a big “brick” Threats include any threat of suicide, violence, or harm to another. Any content of an adult theme or inappropriate to a community web site.

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Any image, link, or discussion related to child pornography, child nudity, or other child abuse or exploitation. Details required : characters remaining Cancel Submit. Choose where you want to search below Search Search the Community. Search the community and support articles Windows Windows 10 Search Community member.

Windows 10 boot error 0xc00021a free download to Windows Worked fine at first. Now I am in the loop others have talked about. Can not get to desktop. Turn on and get blue screen trying to repair disk.

I have pressed F10 and F8 and others to not avail. Sometimes if I press F11 at start up will go to screen that wants me to put in CD. I don’t have this, as did update from Microsoft. One time when pressing one of these keys did get to my desktop. But i thought it was fixed so shut it down, and have not been able to get it to boot for a few weeks. Windows 10 boot error 0xc00021a free download is so frustrating as this is my newest computer less then 2 years old I was running Windows вот ссылка on this computer and it did not come with a CD, so I have no idea what to do next.

I can’t afford to buy another computer and the one I am using now is old and so slow. Any help would be appreciated. I feel like this is a Microsoft problem and why should I lose my newest computer cuz of this?

This thread is locked. You windows 10 boot error 0xc00021a free download follow the question or перейти на страницу as helpful, but you cannot reply to this thread. I have the same question Report abuse. Details required :. Cancel Submit. Hi Robin, Thanks for posting your query on Microsoft community. We appreciate you for trying the troubleshooting steps. To assist you better, please provide few details. Follow the below steps: Create windows 10 boot error 0xc00021a free download media for windows Select the correct time and Keyboard type.

Follow the on screen instruction. How satisfied are you with this reply? Thanks for your feedback, it helps продолжить improve the site. In reply to A. User’s post on February 9, In reply to RobinSpeicher’s post on February 9, Hi Robin, Thanks for replying to us with the status of your issue.

As the issue still persists, I suggest you to re-build windows BCD and check if it helps. Follow the below steps: 1 Create installation media for windows This site in other languages x.