A Quick Guide to Fixing Error 2738

Screen flickering in Windows 10 - What Is It?

Screen flickering when you’re using Windows 10 is quite a common problem. It is often caused by apps that are not compatible with the operating system, or faulty display drivers.

There are a lot of possibilities for why this issue occurs. If you are one of the many users that encounter this kind of problem, you might want to check on your task manager to see if everything is working fine. One common sign that something wrong has happened is if the task manager flickers, as well. To fix this, you will need to update an app, uninstall an app, or update your display driver.

Solution

Error Causes

Common causes of the screen flickering when running on Windows 10 are software issues. This is most likely caused by the following:

• Faulty display driver
• You have an application installed that is not compatible with your operating system

Further Information and Manual Repair

In order to fix the issue of your screen flickering when you have Windows 10 as your operating system, follow these simple steps.

Note: It is very important to consult with an authorized computer technician if you are not highly confident in solving this issue by yourself. Furthermore, you can also use software to fix this problem.

• The first method is by checking if your task manager is flickering. To open the task manager, all you have to do is right-click or press and hold the start button, then select task manager.

If you have confirmed that the task manager is the one causing the screen flickers, the display driver can possibly be your problem. To fix it, all you have to do is update your display driver.

How to update the display driver

1. You have to reset your computer and boot it on Safe Mode.

      -In order to do this, you have to hold the Shift key while selecting Power>Restart. When your computer boots up, you will be greeted by a Choose an option screen. From there, you have to select Troubleshoot, then Advanced Options, then Startup Settings, and then Restart. When your computer restarts, select 4 or hit the F4 key to enter into Safe Mode.

2. When your computer finally boots up in Safe Mode, right-click or press and hold the Start button. From there, click Device Manager.

3. From the Device Manager screen, you have to expand the Display Drivers section, right-click on the driver that might be causing the problem then select Uninstall. Don’t forget to tick the Delete the driver software for this device box, press the OK button, and then restart your computer.

            - When you have two, or more, drivers installed on your computer, all you have to do is disable the other drivers. You can do this by right-clicking on the driver in the Device Manager and click the Yes box next to disable. Shut down your PC after this, disconnect the installation, and boot your computer back on.

4. When your PC boots up after the restart, click on the Start button then click on Settings.

5. You need to go to Update & Security, then Windows Update, and then check for updates.

            - If you are using multiple drivers and this technique doesn’t work, repeat the process in Step 3 and try to disable a different driver.

Remove an incompatible app

There are two ways to remove an incompatible app to fix the issue of a screen flicker on Windows 10. Apps like Norton AV, iCloud, and IDT Audio are usually the ones causing the problem. Uninstalling these apps could solve the problem. Uninstall the apps by using the methods below:

First Solution: Uninstall an app in Settings

1. Click Start, and then click Settings.
2. Click on System, and then click on Apps & Features.
3. A window will pop up and from there you will need to select the application you wish to uninstall. Click the app, and then click uninstall. Follow the screen prompt to fully uninstall the program.

Second Solution: Uninstall an app in the Start Menu

1. Click Start, and then click All Apps.
2. Look for the application you will need to uninstall, right-click the said app, and then click Uninstall. Follow the screen prompt to fully uninstall the program.

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Researchers have discovered 16 vulnerabilities in Bluetooth connections that could be exploited and make from minor to some serious damage to your device. The flaw can be used on chips manufactured by Intel, Qualcomm, and Texas Instruments while connecting to external devices like speakers, headphones, keyboards, mice, etc.

Who is affected?

Mentioned chips are used by many in a vast range of devices including big players with their products like Microsoft Surface laptops, Dell desktops, Samsung Phones, Google Pixel, and OnePlus handsets. The Bluetooth bug affects a wide range of devices, including smartphones, laptops as well as smart home gadgets. In total, more than one billion devices that rely on Bluetooth are believed to be impacted.

What is the damage?

The amount of damage possible with this flaw depends on the type of device with the chipset. Some devices can only be crashed after a specially crafted packet is sent to the flawed chip. If that's the case with your gadget, it can be easily resolved with a simple restart. With other devices, hackers can take advantage of the Bluetooth Classic flaw to remotely run malicious code. That could allow malware to be installed remotely. Researchers say vendors were informed about these issues months ago before the findings were published. The good news is this should have given plenty of time for the relevant patches to be pushed out that remedy the flaws. However, you'll need to make sure that you're running the latest version of the operating system to be protected by the patch crafted by the manufacturers.

Android Bluetooth threat

The researchers emphasize the lack of basic tests in Bluetooth certification to validate the security of Bluetooth Low Energy (BLE) devices. The BrakTooth family of vulnerabilities revisits and reasserts this issue in the case of the older, but yet heavily used Bluetooth classic (BR/EDR) protocol implementations. We would also advise users to disable Bluetooth on devices that do not need it. This way you can prevent attackers from sending you malformed LMP packets. Since BrakTooth is based on the Bluetooth Classic protocol, an adversary would have to be in the radio range of the target to execute the attacks. So, in a safe environment Bluetooth can be enabled.

Internal Error 2324 - What is it?

Internal Error 2324 occurs when you try to upgrade Firefox on your Windows 7 PC. The program fails to install and run successfully. The following error message is displayed:

‘The installer encountered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2324.’

Solution

Error Causes

This error may occur due to different reasons. These include:

• Viral infection
• Bad registry entries (cookies or traces of old version of Firefox program)
• Other programs running on your PC during Firefox program installation
• Installation was not performed from the Administrator account

To use the Firefox web browser successfully on your PC, you first need to resolve error 2324 on your system.

Further Information and Manual Repair

To repair error 2324, try the following methods:

Method 1 - Perform a Clean Reinstall.

This means to remove the Firefox program completely from your PC and then reinstall it. To do this, remove the Firefox installation folder saved in one of the locations by default: C:\Program Files\Mozilla Firefox C:\Program Files (x86)\Mozilla Firefox Now download the latest Firefox version on your PC and save the setup file on your computer. After that double click, the downloaded installation file and follow the steps illustrated in the wizard to install Firefox on your PC.

Method 2

Sometimes Firefox installation may fail because of the interference from other programs running on your PC. Therefore, it is advisable to close all programs running in the background when upgrading the Firefox program. You can also disable programs like Logitech QuickCam and Spybot Tea Timer.  These are some of the many programs that are notorious for interfering with Firefox updates.

Method 3 - Scan for viruses to resolve.

Viruses are malicious programs that often enter computers through files downloads from unreliable websites and phishing emails. These programs then hide in your PC and infect it. You may often experience problems during program installation if your PC is infected by viruses. To fix the issue and ensure smooth Firefox program installation on your system, simply run an antivirus. Antivirus scans and detects all viruses in a few minutes. Upon detection, remove them right away to ensure your PC is free from such malicious programs. Now try updating Firefox on your system again. If it is updated smoothly, then the error is resolved.

Method 4

The registry of your system stores all the activities performed on your PC. You may have uninstalled the old Firefox version from the Control Panel but the traces of the uninstalled program may still remain in the registry as bad entries. These bad entries may be causing error 2324 to pop up on your PC. To resolve, you need to remove these entries from the registry. For quick removal, download Restoro. It is a user-friendly PC Fixer with a registry cleaner that scans and removes all obsolete files stored in the registry such as incorrect registry keys, bad entries, cookies, and junk files. Click here to download Restoro.

Experiencing issues while using Remote Desktop connections is not uncommon. One of the issues that users encountered recently while trying to connect to their Remote Desktop network is the error saying, “Your credentials did not work, The login attempt failed”. If you are one of these users, then you’ve come to the right place as this post will walk you through fixing the problem. When facing this kind of problem, the first thing you can try before you do some troubleshooting steps is to verify the credentials. But if you are certain that you’ve entered the correct credentials just like what other users reported, then it’s completely a different matter. Based on the reports, this error is common on newly installed versions of Windows 10 or after reinstalling the operating system which could mean that the problem might be due to the Windows security policies or the username might have been recently modified. The latter case is a possibility especially if you’ve reinstalled Windows 10 and had entered a new username. In such a case, you will really have a difficult time connecting to your Remote Desktop connection since its credentials do not really automatically change. If you’ve verified that your credentials are correct, then now’s the time you troubleshoot the problem with the help of the potential fixes provided below. Just make sure that you follow each one of them in sequence.

Option 1 –Try to run the Network Adapter troubleshooter

To run the Network Troubleshooter, refer to these steps:

• 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.
• Restart your computer.

Option 2 – Try to change the network profile from public to private

According to some reports, this error occurs on systems where the network profile was set to public. Thus, you need to change the network profile to private to resolve the problem. How? Refer to these steps:

• Go to Start and from there click on Settings > Network & Internet > Status.
• Next, click on the “Change connection properties” option.
• After that, set the radio button of Network Profile from Public to Private.
• Wait for a couple of seconds until the system is done applying the changes you’ve made and then see if you can now connect to the Remote Desktop connection.

Option 3 – Try changing the account username

As mentioned, one of the possible causes for this error is the reinstallation of the operating system. You might have changed the username for the system but it does not really change the username of the Remote Desktop connection as well. Thus, you have to change the username back to what it was before you’ve reinstalled Windows 10.

Option 4 – Try modifying the Windows Security Policy

You can also try to edit the Windows Security Policy as it could help in resolving the error. This Windows Security Policy, when enabled, will not allow non-admin users to log on to the Remote Desktop connection. So if you want to allow non-admin users to use the Remote Desktop connection, then you need to modify this policy. Note that you can only do that if you are the admin of the system yourself.

• Tap the Win + R keys to open the Run utility.
• Then type “secpol.msc” in the field and tap Enter or click OK to open the Local Security Policy.
• After opening the Local Security Policy window, select Local Policies > User Rights Agreement located on the left pane.
• Next, double click on “Allow log on through Remote Desktop Services” located in the right pane.
• And in the next window that appears, select Add user or group.
• After that, type in the username of the intended non-admin user under the “Enter the object names to select” column.
• Once done, click on the Check Names button to fix the username and then click OK to save the changes made.
• Restart your computer.

Option 5 – Use the Group Policy Editor

• Tap the Win + R keys to open the Run dialog box and then type “gpedit.msc” in the field and tap Enter to open the Group Policy Editor.
• Next, navigate to this path: Computer Configuration > Administrative Templates > System > Credentials Delegation.
• Double click on the “Allow delegating default credentials with NTLM-only server authentication” policy setting located on the right pane to edit it.
• After that, shift its radio button to Enabled and click on Show.
• Then type “TERMSRV/*” in the Value box and click OK.
• Now repeat the same for the following policy settings:
  • “Allow delegating default credentials”
  • “Allow delegating saved credentials”
  • “Allow delegating saved credentials with NTLM-only server authentication”

• Once you’re done, restart your computer and see if the problem is fixed.

Although it’s easy to set up wired printers in most cases and they have their charm, you don’t have to be around the printer if you are connected to the same network. So in this post, you will be guided on how you can install and set up a wireless printer on your Windows 10 computer. The idea here is to ensure that your Wi-Fi printer and your Windows 10 computer are connected on the same network and to do that, you need to carry out the following steps:

• You have to connect the printer to the Wi-Fi network.
• You have to add the printer or scanner to Windows 10.
• You have to install the printer software.
• You have to change the default printer.
• And troubleshoot the printer.

For more details, follow the instructions below.

Step 1: Connect your printer to the Wi-Fi network. In this step, you need to turn on your printer and look for the option to connect to a Wi-Fi network. Note that the step to connect to the Wi-Fi network depends on what kind of printer you use as well as its OEM since there will be a user interface or a Wi-Fi button that will get the job done for you. Once your printer is connected to the Wi-Fi network, you need to keep it turned on until the setup is completed. Step 2: Next, add a printer or scanner to Windows 10

• Since you’re already connected to the Wi-Fi network, you now have to go to Settings > Devices > Printers & scanners.
• From there, click on the Add a printer or scanner option.
• After that, the scanning process will begin as Windows 10 looks for the printer and once it finds it, it will display the printer in the result.
• Choose the Wi-Fi printer from the results and click on the Add device option. Once you click this option, Windows will install the drivers via Windows 10 update. Note that this process will apply to all the printers – connected, wireless, and so on.

Step 3: You have to install a printer software In this step, you need to use the driver software from the OEM even though the default printer software works since in most cases, the driver software from OEM works better compared to the default ones and offers much better functionality like ink-saving modes, and many more. Step 4: You now have to change the default printer After installing the printer software, you now have to set or change the default printer in your computer. If you have not installed any printer, the default printer in Windows is the one that saves the files. Now since you have already installed your printer, all that’s left for you to do is to change the default printer of Windows 10 to the one you installed earlier. To do that, follow these sub-steps:

• Go to Settings and navigate to Devices > Printers & scanners.
• From there, check the checkbox labeled, “Let Windows manage my default printer” if there are many printers. This will recommend you to use the most used printer. But if you don’t want to switch to the most used printer, then uncheck the checkbox.
• Once done, click on the printer you want to set as the default one and go to Manage, and then click on the Set as default button.

Step 5: If you have any issues with your newly installed printer, then you need to troubleshoot it One of the first basic troubleshooting you can perform to resolve the printer issue is running the Printer Troubleshooter. This built-in troubleshooter can detect and automatically fix the problem for you. To use it, follow these steps:

• Tap the Win + R keys to open the Run dialog box.
• Next, type “exe /id PrinterDiagnostic” in the field and click OK or hit Enter to open the Printer Troubleshooter.
• Then click the Next button and follow the next on-screen instructions to fix the issue with the printer.

Microsoft has cut out Russia from downloading ISO files for Windows 10 and Windows 11 as well as installation tools without any explanation or reason behind this.

If you connect via VPN to a Russian server and try to download either ISO files or installation tools you will be greeted with the error 404 and an explanation of File or Directory not found or There was a problem with your request.

At this time you can still download Windows 11 Media creation tool but once you run it will throw a 0x80072F8F-0x20000 error with text: For some unknown reason, this tool failed to run on your computer.

People in Russia can still download files if they connect via VPN and go to a server located outside Russia.

Microsoft has not published any explanation why is this happening, it might be technical difficulty or it could be on purpose.

Other histories of Microsoft vs Russia

Since the beginning of the Russian military operation in Ukraine Microsoft has been putting restrictions on Russia starting with a suspension of all sales in March, next month in April Microsoft started suspending developer's accounts on GitHub linked to sanctioned companies and the suspension was even if the developer is not working for a given company or left it.

At the beginning of this month, Microsft laid off 400 employees inside Russia as they began scaling back operations in the country but has also stated that they would continue to provide services to all contractors and customers inside Russia so this sudden blocking of downloads is unexpected and it goes against their statement.

It is officially confirmed, Windows 11 release date is October 5^th. Windows 11 will be released as a free upgrade to all registered Windows 10 users that have supported hardware for it. The rest of the users will be able to install it via ISO file as a clean installation if their computer supports Windows 10 hardware requirements. The official price for the license for Windows 11 has not yet been set but I assume after release it will be set. Priority for W11 will have users who are upgrading from W10 as stated by Microsoft. Also, it was officially confirmed that Android apps will not be running natively in this first release of Windows 11, that feature will come in a future update, official statement below:

"We look forward to continuing our journey to bring Android apps to Windows 11 and the Microsoft Store through our collaboration with Amazon and Intel; this will start with a preview for Windows Insiders over the coming months,"

The rest of the features will be all included inside Windows 11 on launch.

If you encounter the MUP_FILE_SYSTEM Blue Screen error with a value of 0c00000103, then it indicates that the multiple UNC provider or MUP has got an invalid of unexpected data. This can lead to the fact that the MUP cannot channel a remote file system request to a network redirector, the UNC, or Universal Naming Convention provider. There are several ways you can fix the MUP_FILE_SYSTEM Blue Screen Error on your Windows 10 computer, you can try to check the hardware of your computer physically, update or rollback some device drivers, run the Driver Verifier Manager, remove any hardware you’ve installed recently or fix issues related to IRQ. Use the given options below as reference to fix the MUP_FILE_SYSTEM Blue Screen Error.

Option 1 – Try to physically check the hardware

The first thing you can do is to check the physical status of the hardware in your computer. You can clean the dust off the hardware components like the Network Card of the computer. You might want to use a small blower or you could also use a soft cloth and run the components gently. Make sure that you don’t damage any parts with moisture or cause harm to any circuits while you carry out this task.

Option 2 – Try to rollback, update several device drivers

You can try to roll back, update or disable certain device drivers on your computer to resolve the MUP_FILE_SYSTEM Blue Screen error.

• First, boot your computer into Safe Mode.
• After that, tap the Win + R keys to launch Run.
• Type in devmgmt.msc into the box and tap Enter or click OK to open the Device Manager.
• After that, a list of device drivers will be displayed. From there, look for the device drivers related to the Network Card, Chipset, Disk Drive, and the Graphics Drivers and any other driver related to MUP.sys and SwapBuffers.sys system files
• After that, right-click on each entry of the device drivers and select the “Update Device” option from the menu.
• Now follow the next on-screen instructions that appear and then restart your computer.
• After restarting your computer, check if the Stop error is now fixed.

Option 3 – Configure the Driver Verifier Manager

The Driver Verifier Manager is another tool in Windows that could help you fix driver-related issues. And so if you want to fix the MUP_FILE_SYSTEM Blue Screen error you need to use the Driver Verifier Manager:

• Type in the keyword “Verifier” in the Cortana search box to search for Verifier in Windows 10.
• After that, select the option “Create custom settings”.
• Make sure that you have checked everything except the options “DDI compliance checking” and “Randomized low resources simulation”.
• Next, select the option “Select driver names from a list” option.
• Afterward, you have to select all the drivers from any unofficial or third-party provider. To simply put it, you have to select all the drivers that are not supplied by Microsoft.
• Then click on the Finish button.
• Open Command Prompt as administrator and execute this command – verifier /querysettings
• The command you just executed will display the Driver Verifier settings so if you see any of the flags enabled boot your Windows 10 PC into Safe Mode.
• Open the Command Prompt as admin again and run this command – verifier /reset
• The command will reset the Driver Verifier. Once the process is done, restart your PC and check.

Option 4 – Try to disconnect or disable newly installed hardware

In this option, you will have to disable or remove the hardware you’ve just installed recently since external devices could be the one that’s causing the Blue Screen of Death error to appear. To do that, just disconnect any external device that’s connected to your computer physically and then check if it fixes the MUP_FILE_SYSTEM Blue Screen error.

Option 5 – Try fixing IRQ-related issues

The Stop error might have something to do with an issue related to IRQ. You can verify it by switching your PCI Cards around. Aside from that, you can also check if the IRQ2 is assigned to a COM Port that is unavailable at that time.

Option 6 – Run the Blue Screen Troubleshooter

The Blue Screen troubleshooter is a built-in tool in Windows 10 that helps users in fixing BSOD errors like MUP_FILE_SYSTEM. It can be found in the Settings Troubleshooters page. To use it, refer to these steps:

• Tap the Win + I keys to open the Settings panel.
• Then go to Update & Security > Troubleshoot.
• From there, look for the option called “Blue Screen” on your right-hand side and then click the “Run the troubleshooter” button to run the Blue Screen Troubleshooter and then follow the next on-screen options. Note that you might have to boot your PC into Safe Mode.

Option 7 – Perform a System Restore

Performing System Restore might help you in fixing the Blue Screen error. You can do this option either by booting into Safe Mode or in System Restore. If you are already in the Advanced Startup Options, just directly select System Restore and proceed with the next steps. And if you have just booted your PC into Safe Mode, refer to the steps below.

• 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.

What is Active History? A new feature has been introduced in Windows 10 that allows users to stay connected to their tasks across their devices. This new feature is called “Windows Timeline” and using this feature, users could continue their tasks all over their Windows 10 computers as well as on devices that run Android and iOS as well. This new feature was included in Microsoft Launcher and Microsoft Edge on Android devices as well as in Microsoft Edge for iOS devices. In order for the feature to work, you have to send either Basic or Full data and diagnostics of your computer to Microsoft which would sync it all over your devices with the help of the cloud. And now since all your data is stored on your Windows 10 computer and with Microsoft under your account, it is easier for you to access the back and start where you left off. This kind of option is called Active History. In this post, you will be guided on how you can permanently disable Active History using either the Windows Registry or Group Policy. Before you go on further, it is recommended that you create a System Restore Point first in case anything goes wrong. This is a precautionary measure you must take so that you can easily undo the changes you’ve made. After creating a System Restore Point, proceed to the given instructions below.

Option 1 – Disable Active History via Registry Editor

• Tap the Win + R keys to open the Run dialog box and type in “Regedit” in the field and hit Enter to open the Registry Editor.
• Next, navigate to this registry key: ComputerHKEY_LOCAL_MACHINESOFTWAREPoliciesMicrosoftWindowsSystem
• From there, check if you can find a DWORD named “PublishUserActivities”. If you can’t find this DWORD, just create one with the same name and make sure that the base is selected to Hexadecimal.
• After that, double-click on the DWORD and change its value from 1 to 0 to disable Active History.
• Restart your computer to apply the changes you’ve made successfully.

Option 2 – Disable Active History via Group Policy Editor

Note that this second option won’t work if you are using the Home edition of Windows 10. This is because the Group Policy Editor does not come with Windows 10 Home. So if you are not using Windows 10 Home, follow the given steps below.

• Tap the Win + R keys to open the Run box.
• Then type in “gpedit.msc” in the field and hit Enter to open the Group Policy Editor.
• Next, navigate to this path: Computer ConfigurationAdministrative TemplatesSystemOS Policies
• After that, double click on the configuration listing named “Allow publishing of User Activities” to open the configuration page which has the following description:

“This policy setting determines whether User Activities can be published. If you enable this policy setting, activities of type User Activity are allowed to be published. If you disable this policy setting, activities of type User Activity are not allowed to be published. Policy change takes effect immediately.”

• Now you have to select Disabled or Not Configured if you want to disable Publishing of User Activities or Enabled to Enable Publishing of User Activities depending on your preferences.
• Next, click OK and exit the Group Policy Editor and then restart your computer to successfully apply the changes made.

A copy of Windows gets into a grace period when it is installed on a computer which means that you can use your Windows computer without any constraints on its feature. However, if you suddenly encounter an error code 0xC004F009 then this means that the grace period has already expired. In such cases, you will see the following error message on your screen:

“Error Code 0xC004F009, The Software Licensing Service reported that the grace period expired.”

One of the possible causes of this error is that it could be that the grace period has already expired way before the system was activated which is a result of which the system is in the Notifications state at this moment. The error code 0xC004F009 has something to do with MAK-enabled computers in an enterprise when it comes to Volume Licensing. One of the reasons that this error pops up is due to the possibility that the computer was not activated yet even when it was already connected to the Enterprise. Another most likely cause of the error is when the system was never connected with the Enterprise at all and the given grace period has expired before your computer system is activated. Whatever the real cause of this error, this post will guide you in fixing it. Just refer to the instructions given below to fix it.

Option 1 – Try activating Windows using the command-line tool

• First, you need to obtain your MAK key from the IT administrator.
• Once you have it, tap the Win + R keys on your keyboard and then type “cmd” in the field and hit Enter to open an elevated Command Prompt.
• After that, type this command and hit Enter to install the product key or replace the existing one: Slmgr.vbs –ipk <your mak key>
• Next, type another command and hit Enter: slmgr.vbs –ato
• Once you’ve executed the given commands, Windows should be activated after it connects to Microsoft servers and then gives it some time and try to check if error code 0xC004F009 is now fixed or not.

Option 2 – Try activating Windows using your mobile phone

Activating Windows 10 can also be done using your phone. Just note that you have to call Microsoft to do so.

• In the Start Search box, type in “Slui 4” and tap Enter.
• Next, select your country and click on Next.
• Keep the window open and call the toll-free number of the country you’re from.
• Afterward, a confirmation ID should be given by the automated system which you must take a note of.
• Finally, in the box on the window, type in the confirmation ID and click on the Activate button. That should do it.

Option 3 – Try to prolong the grace period

On the other hand, it is also possible for you to prolong the grace period but you might have to get another genuine Windows key for that. Before you proceed, you need to create a System Restore point first afterwards, refer to the steps given below to increase the grace period of the Software Licensing Service on your Windows 10 computer.

• Tap the Win + R keys to open the Run dialog box and type “Regedit” in the field then hit Enter to open the Registry Editor.
• After that, navigate to this registry key: HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionSetupOOBEmediabootinstall
• Next, change the value of the “mediabootinstall” key to “0”.
• Now open Command Prompt with admin privileges and then type this command and hit Enter: slmgr –rearm
• The command you just entered will add another grace period to your system activation. After that, you have to obtain a new key and then activate Windows.

Option 4 – Try running the Windows 10 Activation Troubleshooter

You can also try to run the Windows 10 Activation troubleshooter to help resolve the error code 0xC004F009.

• Go to Settings and then select Activation.
• After that, click on the Windows Activation and then troubleshoot. This will help you address most of the commonly found activation issues in Windows devices.