How to Fix Error 421

Error Code “Windows 10 isn’t activated after upgrading for free” – What is it?

Windows 10 isn’t activated error occurs when Windows users attempt to upgrade to Windows 10 for free and end up in a non-activated state. It is a Windows 10 activation error affecting PC owners who attempt to upgrade their Windows 7 or Windows 8.1 operating systems. A message box will appear with the following message: “Windows 10 isn’t activated after upgrading for free from Windows 7 SPI or Windows 8.1 update.”

Common symptoms of this error code include the following:

• Inability to upgrade for free to Windows 10
• The appearance of activation error code in the message box

Solution

Error Causes

To understand the cause of this activation error, users will need to understand activation within Windows. Activation is a process that allows Windows to verify that you are upgrading your operating system based on the Microsoft Software Licensing Terms. These terms specify, for instance, the number of devices upon which you can use Windows.

Once you have a genuine copy of Windows and you are following the terms mentioned earlier, you should be able to activate and complete the upgrade to Windows 10. However, the activation fails when these conditions are not met. Note also that the error may occur if users fail to upgrade to Windows 10 before reinstalling, requiring them to repeat the installation process by first going back to the previous version of Windows present on their system. Once the upgrade process is not done as should, you might encounter other Windows 10 errors such as error code 0xc0000142

If you see this error code, “Windows 10 isn’t activated after upgrading for free” proceed to rectify it using manual repair methods below.

Further Information and Manual Repair

To fix this activation error code in Windows 10, users will need to employ at least one manual repair procedure. This process can successfully be completed by non-technical Windows users. However, you may also consider getting assistance from a Windows repair technician if you are not certain you have the requisite skills needed to complete the manual repair tasks below.

The main methods to resolve the error code “Windows 10 isn’t activated after upgrading for free from Windows 7 SPI or Windows 8.1 update” is as follows:

Method One: Manually Activate Windows

If you attempted upgrading for free to Windows 10 and ended up with the activation error you will need to first perform a manual activation. Follow the steps below to complete the process.

• Step one: Tap or click the Start button
• Step two: Select Settings then Update & security
• Step three: Select Activation
• Step four: Once activation status is Connect to the Internet to activate Windows, click or tap Activate

The steps above enable users to successfully activate Windows 10 if the issue involves a connection problem. However, if Windows is not activated, it may mean your copy of Windows is not genuine. This may require you purchase a copy of Windows to rectify the issue. However, if you have a genuine copy of Windows proceed by applying the steps found in method two.

Method Two: Use Product Key to Verify Copy of Windows

A valid product key is one way you can verify your copy of Windows is genuine. This will enable you to complete activation and allow you to access the free upgrade to Windows 10. Follow the steps below.

• Step one: Click or tap the Start button
• Step two: Select Settings then Update & security
• Step three: Click Activation
• Step four: Select Change Product Key then type in the product key. (Ensure you type the 25 characters in the correct order.)

Method Three: Use an Automated Tool

Error codes in Windows often occur due to poor maintenance of one’s PC. To improve your system and reduce your machine’s risk of experiencing error codes, download a powerful automated tool. This tool is both powerful and user-friendly, making its benefits accessible to even the most non-technical Windows users.

Windows 11 has some cool animations including fading effects which make working in it feels nice and futuristic but the cost of this is that there is a slight delay to certain actions performed. If you want the snap fast feature in Windows 11 and do not care about this eye candy there is an easy way to turn animations off inside it.

• First, open Windows Settings by pressing ⊞ Windows + I on your keyboard
• Alternatively, click on Start, search for Settings, and then click its icon.
• When Settings appears, look in the sidebar and select Accessibility.
• In Accessibility settings, click on Visual Effects.
• In Visual Effects, switch Animation Effects to Off.

That’s it, changes will be applied automatically, you can close settings and continue working inside Windows 11 without animations and fades. You can always switch animations back On via settings if you change your mind.

If you have multiple keyboards, things can get quite tricky. There are times when the keyboard language changes on its own since the keyboard changes while you are typing. The thing is, the keyboard changes because sometimes we accidentally tap shortcuts like Win key + Space key or Alt + Shift or Ctrl + Shift which changes the keyboard pairs or language. Thus, if your keyboard language changes on its own, there are two ways to resolve it. First, you have to make sure that Windows 10 does not add keyboards without your permission. Second, you have to make sure that the shortcut keys don’t change the keyboard language. This second option is what we’re going to discuss in this post. You need to first set a different input method for each app window. To do that, you have to disable the change in layout. Refer to these steps:

• Go to Settings > Language and input.
• Next, type “switching input methods” to open the Advanced keyboard settings with this option inside.
• After that, select the checkbox labeled as “Let me set a different input method for each app window” and then click the Save button.
• Restart your computer.

Now that you’ve disabled the change in layout, you now have to find the keyboard settings. Just go to Settings > Devices > Typing > Advanced Keyboard settings. From there, you have the option to select which keyboard is going to be used for any app. When you change the keyboard every time you use an app, usually, Windows remember it so that you won’t have to set it up all over again. In addition, the Advanced keyboard settings page also allows you to override the default input method which could be different from the first one in your language list. Aside from that, there is also a Language bar option that comes in handy as you can quickly switch between keyboards. And if you removed it, you have the option to restore the language bar back as well. Now all that’s left for you to do is to change the Language Settings under the Administrative tab. A user from a forum that came up with this solution, reported that the issue occurred when he started typing in some program with non-Unicode characters which caused Windows to use the default system local language to interpret these characters even though the language is unavailable in the Language bar. To change the Language Settings under the Administrative tab, follow these steps:

• Go to Settings > Time and Language > Language > Administrative language settings.
• After that, click on Copy Settings under the Administrative tab.
• Now make sure that all the Display language, Input language, and Format are English (United States) or any language you prefer.
• Then mark the two checkboxes in “Copy your current settings to Welcome screen and system accounts & New user accounts”.
• After that, click OK and then exit.

Note: You also have the option to disable those shortcut combinations which can change your keyboard settings accidentally.

Error Code 0xc004f034 – What is it?

Error code 0xc004f034 occurs when Windows 10 users fail to activate their operating system. This activation error code affects not only Windows 10 but those using other versions of the Windows operating system including Windows 8.1. Users experiencing this problem will notice the following common symptoms which occur:

• Inability to activate Windows 10 operating system
• Message box with error code 0xc004f034

Solution

Error Causes

Error code 0xc004f034 usually results from issues related to activation servers. In such cases when servers are busy, users will not be able to complete the activation process which would result in access to their Windows 10 edition of choice. The error code may also result from issues related to your product key. For this reason, be sure to use the correct product key when you attempt to activate Windows 10.

Further Information and Manual Repair

The completion of manual repair methods can be an effective way to correct issues like error codes in Windows 10. To begin, however, ensure you follow the instructions as given as making even a slight mistake will result in unfavorable results. If, for whatever reason, you have trouble completing the steps suggested below, feel free to contact a Windows repair technician. This type of IT professional is usually equipped with knowledge and expertise to access your particular situation. Otherwise, see the manual repair methods listed below and complete at least one method to fix error code 0xc004f034.

Method One: Ensure You Enter a Valid Product Key

If there is a problem with your product key, you will need to ensure you fix it before you can resolve error code 0xc004f034. Follow the instructions below after ensuring you have a valid product key.

• Step one: Click the Start button then select Settings
• Step two: Select Update & security then Activation
• Step three: Click the Change product key
• Step four: Type in your valid product key with its 25 characters in the correct order

Your system will activate Windows 10 if the issue was related to the use of an invalid product key. However, attempt manual method two if error code 0xc004f034 reappears and you are unable to complete the activation process.

Method Two: Reattempt Windows 10 Activation Until Process Completes

In many cases, error code 0xc004f034 occurs simply due to a busy server. This was the case in 2015 in particular when Windows users first received access to editions of Windows 10 like Windows 10 Pro. To complete this process, you will need to follow the instructions below, repeating the last step until the activation occurs.

• Step one: Click the Start button then select Settings
• Step two: After selecting Settings, click Update & Security
• Step three: Select Windows Update then the Check for updates tab
• Step four: Click Activate Windows 10 update

If this method is successful, you will finally be able to update your system to the Windows 10 edition of your choice. This process may take just a few minutes – and several attempts – before you resolve the issue. Remember to be patient. However, contact a Windows repair technician to evaluate your system if the issue persists for more than a few days.

Method Three: Use an Automated Tool

If you wish to always have at your disposal a utility tool to fix these Windows 8 and other related issues when they do arise, download and install a powerful automated tool.

If you are using a multi-monitor, then you might find it quite useful. It helps many users with their work and brings more productivity. And over the past few years, Windows has managed to offer one of the excellent multi-monitor features where users can plug in an additional monitor and access their work or use their computer seamlessly on both displays. This is really handy, especially for users who are graphic designers, gamers, and other professionals who have to use a larger screen for their work. One of the biggest inconveniences for users who use multi-monitor is that the Taskbar is switched on, on both displays, by default. This default arrangement is most likely to cause clutter on the second display. So if you are one of these users who find such a thing annoying, then you will find this post useful for you as we will walk you through how you can move the Taskbar to a second monitor. To get started, follow the instructions laid out below. Step 1: The first thing you have to do is right-click on the Taskbar. Step 2: Next, uncheck the “Lock the taskbar” option. Step 3: After that, click and hold the taskbar and drag it to the second monitor. Step 4: Once done, click the mouse button on the place where you want to place the taskbar. Step 5: Now right-click on the “Lock the taskbar” option to lock the taskbar. Once you’re done carrying out the steps given above, there are Advanced Options you can explore. This array of advanced options are offered by Windows 10 to fine-tune the multi-monitor experience of users. For instance, you have the option to choose to show the taskbar on an active screen only or combine the buttons on other taskbars. It would be better if you try out different variations and stick with the best one. In addition, you could also move the taskbar from one display to another.

If you are using UEFI and you encountered an error message that says, “Selected boot image did not authenticate”, then read on as this post will show you what to do it fix it. This kind of error indicates that UEFI is having an issue in figuring out if the boot image has tampered with. UEFI offers Secure Boot and if the boot image seems to be invalid, you won’t be allowed to boot into your computer. Aside from that, it could be that you may be using endpoint encryption and the software can’t validate the certificate. To fix the “Selected boot image did not authenticate” error in UEFI, you need to first check if the error has given any reference to any software that you might have for encryption. If it has, then you need to disable the Encryption tool to resolve the problem. In addition, you could also try to disable Secure Boot or perform Startup Repair in case the disabling Encryption tool didn’t work. For more details, make sure to use each one of the options provided below as a reference.

Option 1 – Try to disable the Encryption tool

The first thing you can do to fix the “Selected boot image did not authenticate” error is to disable the Encryption tool. Many users reported that some encryption tools like the ESET Endpoint Encryption won’t let them boot into the computer if the system manufacturer does not include the correct certifications as a part of the UEFI BIOS. And since there is no way to bypass this, you have to disable Secure Boot in order for you to boot into your computer.

Option 2 – Disable the Secure Boot in the BIOS

Disabling the Secure Boot in the BIOS settings is definitely recommended to resolve the error. To disable Secure Boot, here’s what you have to do:

• First, boot your computer into Windows 10.
• Next, go to Settings > Windows Update. From there, check if there is anything that you have to download and install if you see any available updates. Usually, OEMs send and update the list of trusted hardware, drivers, and operating systems for your computer.
• After that, go to the BIOS of your computer.
• Then go to Settings > Update & Security > Advanced Startup options. If you click on Restart Now, it will restart your computer and give you all the advanced options.
• Next, select Troubleshoot > Advanced Options. As you can see, this screen offers you further options including System restore, Startup repair, Go back to the previous version, Command Prompt, System Image Recovery, and UEFI Firmware Settings.
• Select the UEFI Firmware Settings which will take you to the BIOS.
• From there, go to the Security > Boot > Authentication tab where you should see Secure Boot. Note that every OEM has its own way of implementing the options so it varies.
• Next, set Secure Boot to Disabled and set Legacy Support to On or Enabled.
• Save the changes made and exit. Afterward, your computer will reboot.

Option 3 – Try to run the Automatic Repair Utility

If disabling Secure Boot did not fix the problem, you might also want to run the Automatic Repair utility in fixing the error. To do so, follow the steps below.

• You can start by booting into the Advanced Recovery Mode.
• After that, select Troubleshoot > Startup Repair.
• Next, follow the on-screen instructions that appear on the screen and finish the Automatic Repair process.
• Now check if the block is gone once the reboot is completed.

EverydayLookup is a browser extension for Google Chrome developed by Mindspark Inc. This extension allows users to find what mobile network a certain number belongs to, to find out an area code of a country/town, or locate a town by zip code. While these features look promising and interesting, this extension comes with a downside.

When installed, this extension will change your default search engine, the home page, and new tab to search from MyWay.com, it will monitor user browsing activity, log searches, visited links, opened websites, and other information. This information is forwarded to Mindspark ad servers, then later sold/used to better target ads.

While browsing the internet with this extension you will see additional injected ads and sponsored content throughout your browsing sessions (even if the ads do not match your search queries). It can inject banners to websites, and sometimes even put an ad above website content making it extremely annoying to deal with.

About Browser Hijackers

Browser hijacking means that a malicious code has taken power over and modified the settings of your web browser, without your permission. Browser hijackers are capable of doing many different things on your computer. Typically, browser hijacking is used for earning ad revenue that comes from forced advert mouse clicks and site visits. Even though it might seem naive, all browser hijackers are damaging and thus always classified as security threats. Browser hijackers can also permit other destructive programs without your knowledge to further damage the computer. How one can determine if your browser is hijacked Signs that a browser is a hi-jacked include: 1. your home page is reset to some unknown webpage 2. new bookmarks pointing to pornographic websites have been added to your favorite pages 3. the essential web browser settings are modified and unwanted or unsafe resources are added to the trusted sites list 4. find new toolbars that you simply did not add 5. you find lots of pop-ups on your screen 6. your web browser starts running slowly or presents frequent errors 7. Inability to navigate to certain websites, particularly antivirus and other security software webpages.

Exactly how browser hijacker finds its way to your computer

Browser hijackers can get into a computer in some way or other, for instance via file sharing, downloads, and e-mail too. Many web browser hijackings come from add-on programs, i.e., browser helper objects (BHO), toolbars, or extensions added to browsers to give them additional features. Sometimes you may have mistakenly accepted a browser hijacker as part of a software bundle (generally freeware or shareware). A good example of some well-known browser hijackers includes Conduit, Anyprotect, Babylon, DefaultTab, SweetPage, Delta Search, and RocketTab, but the names are continually changing. Browser hijackers can record user keystrokes to gather potentially invaluable information leading to privacy concerns, cause instability on computers, severely disrupt user’s browsing experience, and eventually slow down the computer to a stage where it becomes unusable.

How to get rid of a browser hijacker

Certain browser hijacking could be simply stopped by discovering and removing the corresponding malware application through your control panel. Many times, it could be a tough job to find and delete the malicious program because the associated file will be running as part of the operating system process. Moreover, manual removal requires you to perform many time-consuming and tricky procedures that are very hard to conduct for new computer users. Industry experts always suggest users eliminate any malware including browser hijacker by using an automatic removal tool, which is easier, safer, and faster than the manual removal solution. If you’d like to eliminate persistent hijackers effectively, install the award-winning anti-malware software Safebytes Anti-Malware. And employ a system optimizer, such as Total System Care, to erase all related files from the registry and fix browser issues.

Can't Install Safebytes Anti-malware because of a Virus? Try This!

Practically all malware is inherently harmful, but certain types of malware do a lot more damage to your computer than others. Some malware types modify browser settings by adding a proxy server or modify the computer’s DNS configuration settings. In such cases, you will be unable to visit some or all sites, and thus unable to download or install the required security software to remove the infection. So what to do if malicious software prevents you from downloading or installing Anti-Malware? There are some fixes you could try to get around with this problem.

Install in Safe Mode with Networking

In the event the malware is set to load at Windows startup, then booting in safe mode should avoid it. Since only the bare minimum applications and services launch in “Safe Mode”, there are rarely any reasons for issues to take place. To start your Windows XP, Vista, or 7 computers in Safe Mode with Networking, do as instructed below. 1) At power on, press the F8 key while the Windows splash screen starts to load. This will conjure up the Advanced Boot Options menu. 2) Choose Safe Mode with Networking with arrow keys and hit Enter. 3) Once you get into this mode, you should have an internet connection once again. Now, utilize your browser to download and install Safebytes Anti-malware. 4) After installation, run a full scan and let the program delete the threats it discovers.

Obtain the security software using an alternate browser

Malicious program code may exploit vulnerabilities on a specific browser and block access to all anti-malware software sites. In the event you suspect that your Internet Explorer has been hijacked by a computer virus or otherwise compromised by online hackers, the ideal approach would be to switch to a different internet browser like Mozilla Firefox, Google Chrome, or Apple Safari to download your chosen security software – Safebytes Anti-Malware.

Install and run anti-virus from your Thumb drive

Another way is to download and transfer anti-malware software from a clean PC to run a scan on the affected computer. Abide by these steps to run the anti-malware on the infected computer. 1) On a clean computer, install Safebytes Anti-Malware. 2) Insert the USB drive into the uninfected computer. 3) Double-click the executable file to open the installation wizard. 4) Pick the USB drive as the location when the wizard asks you exactly where you want to install the application. Follow the directions to complete the installation process. 5) Now, transfer the pen drive to the infected PC. 6) Double-click the EXE file to open the Safebytes software right from the pen drive. 7) Hit the “Scan Now” button to start the virus scan.

A Look at the Best AntiMalware Program

Today an anti-malware tool can protect your computer or laptop from different types of internet threats. But how to choose the right one amongst various malware protection application that’s available on the market? Perhaps you might be aware, there are numerous anti-malware companies and tools for you to consider. A few are well worth your money, but most aren’t. You need to be careful not to select the wrong application, particularly if you purchase a premium program. One of the highly recommended tools by industry leaders is SafeBytes Anti-Malware, the most dependable program for Windows computers. SafeBytes anti-malware is a trustworthy tool that not only secures your computer permanently but is also quite easy to use for people of all ability levels. This program can easily identify, remove, and protect your personal computer from the latest malware attacks such as spyware, adware, trojan horses, ransomware, PUPs, worms, parasites along other potentially harmful software programs.

SafeBytes has excellent features when compared to various other anti-malware programs. Listed here are some of the great ones:

Anti-Malware Protection: Using its advanced and sophisticated algorithm, this malware elimination tool can detect and eliminate the malware threats hiding in your computer system effectively. Active Protection: SafeBytes provides round-the-clock protection for your computer limiting malware attacks instantly. This software will constantly keep track of your computer for suspicious activity and updates itself continuously to keep current with the latest threats. Web Protection: Through its unique safety rating, SafeBytes alerts you whether a website is safe or not to access it. This will assure that you’re always certain of your online safety when browsing the internet. High-Speed Malware Scanning Engine: SafeBytes’s high-speed malware scanning engine lessens scan times and extends battery life. At the same time, it’ll effectively find and eradicate infected computer files or any internet threat. Low Memory/CPU Usage: SafeBytes is renowned for its minimal influence on computer resources and great detection rate of diverse threats. It runs quietly and efficiently in the background so you’re free to use your computer or laptop at full power all of the time. Premium Support: For any technical inquiries or product guidance, you can obtain 24/7 professional assistance via chat and e-mail. To conclude, SafeBytes Anti-Malware is really great for securing your computer against all sorts of malware threats. Malware trouble will become a thing of the past once you put this software program to use. If you’re looking for the very best malware removal application out there, and when you don’t mind shelling out some dollars for it, go for SafeBytes Anti-Malware.

Technical Details and Manual Removal (Advanced Users)

If you’d like to manually get rid of EverydayLookup without using an automated tool, it might be possible to do so by removing the application from the Microsoft Windows Add/Remove Programs menu, or in cases of browser plug-ins, going to the browsers AddOn/Extension manager and uninstalling it. You will likely also want to reset your internet browser. To be certain of complete removal, find the following registry entries on your computer and delete them or reset the values appropriately. However, this is a complicated task and only computer experts can perform it safely. Furthermore, certain malware is capable of replicating or preventing removal. It is recommended that you carry out the removal procedure in Windows Safe Mode.

Over the years, the Windows 10 updates have smoothened but that does not mean that it no longer encounter some issues. One of these issues is when it gets stuck. As you know, Windows automatically checking for updates regularly or when you click the “Check for updates” button. However, if the Windows 10 update is taking forever and seems to be stuck, then you’ve come to the right place as this post will guide you on what you can do to resolve the problem. This kind of scenario in Windows Updates can be quite confusing especially since there is no response or any indication of what is really happening since you don’t know if the update is still downloading or if it’s already getting installed. To resolve this problem, there are several options you can check out. You can try to exit settings and restart your computer. You could also try to restart the services related to Windows Update or clear both the Software Distribution and Catroot2 folders, as well as run a System File Checker scan. For more details follow each one of the given steps below.

Option 1 – Restart your computer

The most basic thing you can do to fix the problem is to restart your computer. It usually works in fixing common issues like the Windows Update getting stuck at the “Checking for updates” screen. However, if it didn’t work, proceed to the next given options below.

Option 2 – Reset Windows Update components

If the first two options did not work then you might want to reset the Windows Update components manually. Follow the steps below to reset them.

• 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
• Next, 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
• Close Command Prompt and reboot your PC.

Option 3 – Try checking Services Dependencies

Dependencies of a Windows Service in Windows 10 are when windows services depend on other services. Such is the case with the Windows Update service – it also depends on three different services such as the Remote Procedure Call or RPC service, DCOM Server Process Launcher, and the RPC Endpoint Mapper. Meaning to say, if two of these services are not working as expected, then the dependent service will also be affected. This could be the reason why the Windows Update service could not start.

• Tap the Win + R keys to open the Run dialog box.
• Next, type “services.msc” in the field and hit Enter to open Windows Services.
• From the list of Services, look for the following services:
  • Remote Procedure Call (RPC) Service
  • DCOM Server Process Launcher
  • RPC Endpoint Mapper
• After you find these services, double click on each one of them and check whether the Startup type for all is set to Automatic and the Service status is set to Running or not.
• If the service status is not running, then click the Start button. Afterward, check if you can now run the Windows Update service.

Option 4 – Check the Background Intelligent Service and the Cryptographic Service

• Tap the Win + R keys to open the Run dialog box.
• Next, type “services.msc” in the field and hit Enter or click OK to open Services.
• From the list of Services, look for the following services and make sure that their Startup type is as follows:
  • Background Intelligent Transfer Service – Manual
  • Cryptographic Service ­– Automatic
• After that, check if the Service status of the listed services above is set to Running. If they’re not, click on the Start button to start these services and then check if you can now enable the Windows Update service or not.

Option 5 – Try running the 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 your screen is stuck at “Checking for updates”. 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.

• Restart your computer.

If you wish to continue where you have left off when you signed out of Windows follow this guide and learn how to continue your work after signing in, restart apps in your Windows. You can set Windows 10 to Automatically save your restartable apps when you sign out and restart them after you sign in. Here’s how:

1. Right-click on the Windows logo to open the secret menu
2. Select Settings
3. Click open Accounts
4. From the left side, select Sign-in options
5. Scroll down till you see Restart apps setting
6. Toggle the Automatically save your restartable apps when you sign out and restart them after you sign in setting to On position

A few days ago we celebrated fixing of months-long PrintNightmare vulnerability by Microsoft, sadly a new bug and issue have been found. Firstly discovered Microsoft stated:

A remote code execution vulnerability exists when the Windows Print Spooler service improperly performs privileged file operations. An attacker who successfully exploited this vulnerability could run arbitrary code with SYSTEM privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

A few days ago, Microsoft officially released a patch that was supposed to finally fix it. As you might recall this vulnerability was present for quite some time, Microsoft's solution after a long struggle was to elevate certain privileges to administrator account only and remove user accounts from managing printers. It complicated things a little bit but it was stated payoff was worth it. The new issue now is that on a system that already had accounts created and set, old accounts still can hijack the system, patch issues address only accounts that are created after the fix is administrated, old ones can still do whatever they want. Once again of course Microsoft has stated that until it is again resolved you should again disable the Print Spooler service as a temporary workaround.