How to Fix the Error 550

If the Sleep option is missing from the Power Menu then this could be caused by the power settings, local group policy configuration, etc. in your computer. Based on the reports of users who experience the same problem, the issue occurred after they’ve updated or upgraded their Windows 10 computers. As you know, the sleep mode is quite useful in certain cases and is utilized by most users. If you put your computer in sleep mode, it actually minimizes the power usage of your computer while at the same time keeps your current session running. So if sleep mode is suddenly missing, then that could be a problem but worry not for this post will give you possible fixes to resolve the issue. Make sure to follow each one of them carefully to achieve good results.

Option 1 – Check the Power settings

As mentioned, one of the reasons why the Sleep option is missing could be the power settings in your computer. To check this possibility, make sure that you’ve enabled the sleep mode in the Power options setting window. How? Refer to these steps:

• First, go to the Start menu, and from there open Control Panel.
• Next, set the View by Large icons and select the Power Options.
• After that, click on the “Choose what the power buttons do” option on the left-hand side.
• Then click on the “Change settings that are currently unavailable” option and make sure that Sleep is checked under the Shutdown settings.
• Afterward, click on Save changes.

Option 2 – Modify the Local Group Policy

If the Power setting isn’t the cause of the problem, then you might want to check the Local Group Policy and modify it. There is a dedicated policy for showing the sleep option in the power menu and if this policy is disabled, then it’s no wonder why you don’t see the sleep option in the power menu. To change this policy, refer to the steps below.

• Tap the Win + R keys to open the Run dialog box.
• Then type “gpedit.msc” in the field and hit Enter to open the Group Policy Editor.
• Next, navigate to this path: Computer Configuration -> Administrative Templates -> Windows Components -> File Explorer
• Look for the “Show sleep in the power options menu” option from the right-hand side pane and double click on it.
• Now change it to Enabled and click on the Apply and OK buttons to save the changes made and restart your computer.

Option 3 – Try to turn on Standby

Standby, also known as InstantGo, is a feature in Windows 8 and 10 that allows users to maintain network connectivity after a computer has been put into sleep mode. Thus, if this feature is disabled, it can cause the Sleep option to disappear from the power menu. To turn it on, follow these steps:

• Tap the Win + R keys to open Run.
• And type “Regedit” in the field and tap Enter to open the Registry Editor.
• Next, navigate to this path: HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlPower
• From this path, look for the “CsEnabled” key on the right-hand side of the pane and double-click on it.
• Set its value to “1” and click OK to save the changes made.
• Now reboot your PC.

Note: If you were not able to find the CsEnabled key, then this indicates that your computer does not support the Standby feature. And if that’s the case, proceed to the next given option below.

Option 4 – Try to install a Video Card driver

On the other hand, some users reported that the problem was caused by the video card driver. And if your computer lacks the video adapter driver, it can also cause the same problem. Windows 10 typically install the video card driver on its own, however, there are rare cases when it doesn’t which is why you have to do it yourself manually. All you have to do is go to your manufacturer’s website and look for the video card driver, download it and then install it. Once you’ve installed the video card driver, reboot your computer and check if it has fixed the problem.

Seeing a yellow triangle with an exclamation mark on the battery symbol on the System Tray of your Windows 10 laptop is not really uncommon especially if your battery is about to run out of power. However, if you just purchased your laptop recently and the first thing you’ve noticed when you first opened it is the yellow triangle with an exclamation mark in the battery, read on as this post will help you resolve this issue. Seeing this kind of icon on your computer does not necessarily mean that you have to replace your battery as there are still several potential fixes you can try to resolve the problem. So if you notice this icon, you can try running the Power troubleshooter as it will help you resolve any potential issues with the battery. Aside from that, you can also restore the default settings of the power plan manually or uninstall and reinstall the battery driver. For more information, refer to the given options below.

Option 1 – Try to run the Power troubleshooter

As pointed out, the Power troubleshooter can help you resolve any issues your battery might have automatically. It plans and detects system settings that can affect power usages like timeout and sleep settings, display settings, and screensavers and restores them to their default settings. To run this troubleshooter, follow these steps:

• Open the Windows Settings and go to the Update and Security option.
• Next, click on the Troubleshoot option under Update and Security and then scroll down until you see the “Power” option.
• Under Power, click on the “Run the troubleshooter” button to start running the Power troubleshooter.
• Wait for a couple of seconds until the Power troubleshooter is done scanning your computer for issues. Once it’s done, follow the next on-screen instructions that appear on the screen.
• If needed, restart your computer and see if it has fixed the problem.

Option 2 – Restore the default settings of the Power plan manually

• Open the Windows Settings again and select System.
• Next, scroll down until you see the “Power & sleep” option.
• After that, click on the “Additional power settings” option located in the right pane to open the Power Options.
• Now click on the link that says, “Change Plan Settings” and select the “Restore default settings for this plan” option.

Option 3 – Try to uninstall or reinstall the Battery driver

You might also want to uninstall or reinstall the battery driver as it can also resolve the problem. But before you start, you have to shut down your computer and remove the power chord as well as the battery. Once you’re done, follow these steps:

• Plug the power chord and restart your computer.
• Once your computer has restarted, tap the Win + R keys to open the Run utility and type “devmgmt.msc” in the field and tap Enter to open the Device Manager.
• After that, look for the “Batteries” driver from the list of drivers and expand it.
• Then right-click on the “Microsoft ACPI-Compliant System” driver and click on the “Uninstall device” option.
• Once it’s done, restart shut down your computer and remove the power chord and then attach the battery.
• Now attach the power chord again and restart your computer to automatically install the driver.

What Is Error 126?

Error 126 is a very commonly occurring error that is often the result of damaged system files of Windows. They usually occur during the installation of some Windows program or application. When Error 126 is generated, it terminates the installation process almost instantly. It is important to take corrective measures immediately to ensure that no such problems are encountered again in the future.

Solution

Error Causes

There are a variety of conditions that may trigger Error 126. These conditions are listed below as follows.

• Corruption of the service-related DLL file
• Missing or damage service-related DLL file
• Corrupt, damaged, or Misconfigured system files
• Improper hardware or application installations or uninstallations
• Existence of viruses, malware, adware, or spyware in the system
• Corrupt or incorrect registry entries in the system files

When any of the above-listed conditions occur, the corrupt system files will go to the improper links or missing information. Eventually, the problems with the files will keep the applications or programs from responding in the usual manner. Whatever are the reasons for error generation, it is of utmost importance that the error is removed to ensure smooth functioning of the system.

Further Information and Manual Repair

There are many different ways this error can be rectified. However, the two most effective solutions are listed below as follows.

• This solution is for the advanced user. Turn on the system and log on to it as the Administrator. Now click on the Start button. Now click on All programs -> Accessories -> System Tools. Here you will come across the option for System Restore. Click on it. A new window will appear. Select 'restore my computer to an earlier time' point. Now clock on Next. A list of restore points will now appear in front of you. Choose the latest restore point you come across from this list and click on ‘Next’. In the next window that opens, click on ‘Next’ again. This is the confirmation window. Once the restoration finishes, restart your computer.
• This solution is for novice users. Download an Error 126 repair utility program. Install it on your system. Now use it to scan your system for errors. Find out if there is an option to fix/repair error. When you come across it, click on it as soon as the scan is complete. Restart your computer. Your system is now free of Error 126.

KMODE_EXCEPTION_NOT_HANDLED – What is it?

Some users installing or upgrading to Windows 10 experienced the theKMODE_EXCEPTION_NOT_HANDLED Blue Screen of Death (or commonly known as BSOD) error. This error can be due to different types of things, ranging from software to driver issues. When you experience this BSOD error while trying to install Windows 10, it will prompt you to restart your computer every single time you experience it. In most cases, you will also not be able to proceed with the Windows 10 set-up.

Solution

Error Causes

The “KMODE_EXCEPTION_NOT_HANDLED” error is normally caused by:

• Hardware incompatibility
• A faulty device driver or system service

Further Information and Manual Repair

You won’t be able to successfully upgrade or set up Windows 10 if you continue to encounter this BSOD error. Note that this error will always prompt your computer to restart every time it happens, preventing you from completing the Windows 10 set-up.

If you’re not tech-savvy or not capable of debugging this issue, it’s highly advisable to proceed with the basic troubleshooting techniques available in this link.

After troubleshooting, below you’ll find a few solutions to rectify the issue.

Method 1 – Check The Cause of The BSOD Error

Two common causes of the KMODE_EXCEPTION_NOT_HANDLED issue are hardware incompatibility and faulty device driver or system service.

If you experience this error, check first if any of your newly installed hardware is compatible with Windows 10. You can find the required hardware for Windows 10 from this link. 

If all your hardware is compatible with Windows 10, you might need to check the device driver or system service. Review the bug check message. If any of the drivers you have is listed in the message, either disable or uninstall them before upgrading or setting up Windows 10.

You might also find it useful to check the System Log available in the Event Viewer for other error messages that can help you figure out the driver or device that’s causing the error. Running hardware diagnostics can also be useful.

Method 2 – Disable (or preferably uninstall) Software Before Upgrading

If you’re upgrading Windows 10 from Windows 7 or Windows 8.1, you might need to disable or uninstall the software first. First, try uninstalling your Antivirus utility before starting the upgrade. Restart a few times before starting the Windows 10 installation. If you’re upgrading using the Windows 10 update, make sure that you disconnect from your Wi-Fi or Internet LAN (Ethernet) connection as soon as the download reaches 100% before attempting to start the set-up. Other users also reported that the cause of the KMODE_EXCEPTION_NOT_HANDLED issue is BitDefender. If this is what happened in your case, it will show in the error message such as KMODE_EXCEPTION_NOT_HANDLED (bdselfpr.sys). Users reported that a common solution for this is renaming the file. In the case of BitDefender, try renaming it to bdselfpr.s__. However, make sure to do this cautiously. Sometimes, renaming a file will even do more damage than good.

Method 3 – Disable/Disconnect From Hardware

If you’re connected to any general USB devices (such a smart card reader), disable it. If your computer is connected to other external devices, disconnect all of them. Examples of this include gaming controllers, printers, external hard disk, USB keys, and other non-essential devices).

Method 4 – Other Troubleshooting Steps

Other troubleshooting steps include:

• Upgrade using an .ISO file, instead of directly upgrading from Windows Update. When you do this, make sure you’re disconnected from the Internet during installation. If the process started and you forgot to disconnected, it’s best to restart the installation.
• If you’re connected to a domain while trying to set up Windows 10, disconnect and use a local account.
• If you’re using a SCSI hard disk, connect a thumb drive with the drivers for your storage device. While Windows 10 is setting up, click on the Custom Advanced Option. Using the thumb drive, use the Load Driver command to load the SCSI drive.
• Another possible cause of this error is due to BIOS incompatibility. BIOS issues can be solved by upgrading your version of your system BIOS. If you don’t know how to do this, refer to your BIOS manufacturer’s website.

Method 5 – Use A Trusted Automated Tool

If you still experience the error after doing the methods above, you might want to try a powerful and trusted automated tool to fix the job.

If you are using a Windows Update Standalone Installer to install Windows Updates in your Windows 10 computer but you suddenly encounter an error saying, “Installer encountered an error: 0x80096002, The certificate for the signer of the message is invalid or not found”, read on as this post will guide you on how you can fix it. This kind of error could be due to the vendor’s certificate that might have become invalid, compromised, or pulled. Aside from that, it is also possible that the update is not targeted at your OS version. You could get this error when you try to install an incompatible update or software on your computer. This error can also appear due to misconfigured system files or when you try to install BitLocker To Go Drive Encryption or BitLocker Drive Preparation Tool. To fix this error, you can try to run the standalone installer in Compatibility mode or enable the Windows Identity Foundation or run the Windows Update troubleshooter. Make sure to check if the error was resolved after every suggestion. It will help you learn what fixed the problem.

Option 1 – Try to run the installer in Compatibility mode

• Look for the setup file.
• Once you find it, right-click on it and select Properties from the context menu.
• After that, go to the Compatibility tab and mark the checkbox for “Run this program in compatibility mode for:” and from the drop-down list, select the Windows OS version you want the installer to run on.
• You also have to check the “Run as administrator” option.
• Now click the Apply button and then click OK to save the changes made and check if it has resolved the issue or not.

Option 2 – Try to troubleshoot compatibility

This option is almost the same as the first one except it is an alternative way of fixing the error 0x80096002 in case the first one didn’t work. In this option, you will troubleshoot the compatibility issue.

• Look for the setup file.
• Then right-click on it and select the “Troubleshoot compatibility” from the context menu.
• After that, click on the “Try recommended setting” option. Once the process is done, the error message should be gone.

Option 3 – Try to enable the Windows Identity Foundation

You might also want to enable the Windows Identity Foundation as some users reported that it helped in resolving the error for them. To do so, follow these steps:

• In the Windows Start Search, type “Turn Windows features on or off” and click on the matching result.
• This will open a list of Windows Features and from there, look for the Windows Identity Foundation.
• Once you found it, click on its checkbox and click OK to enable it and save the changes made.
• Now see if it has fixed the error or not. If not, you have to disable the feature.

Option 4 – Run the Windows Update Troubleshooter

Running the built-in Windows Update troubleshooter is one of the things you can first check out as it is known to automatically resolve any Windows Update errors like error 0x80096002. 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.

Like in Windows 10, Windows 11 will also support God mode to be enabled and used. For those readers that do know what God mode is, let me explain it in simple terms. God mode is the icon on the desktop that once clicked will open and let you adjust every option in the control panel and some hidden features for Windows inside one application. There are a lot of advantages to having this one-click fast access to features, especially if you are a power user. Luckily creating such an awesome icon and enabling God mode is very easy to accomplish, all you have to do is:

1. Create a new folder where you want to have the God mode icon
2. Rename folder exactly: {ED7BA470-8E54-465E-825C-99712043E01C}
3. Enjoy God mode

As you can see creating and accessing all settings at your fingertips is much easier than most people think. Enjoy your ultimate access to Windows 11 features and if you wish you can drag and drop sections from it into the desktop or anywhere for easy access to that specific topic.

Recently, a number of Windows 10 users reported that they were not able to use Cortana properly because it wasn’t able to connect to the internet. According to these users, Cortana won’t connect to the internet even when their internet connection is stable. According to security experts, this issue is confirmed to occur only with Microsoft accounts. This problem might have something to do with a proxy server that interferes with Cortana. There were reports that this issue was caused by a proxy that was filtering the network connection which also happens to interfere with Cortana’s ability to adapt search results and queries based on the user’s location. It could also be caused by some glitch in the home network or your Microsoft account information is inconsistent or your Microsoft account has to be verified. Here are some suggestions that could help fix the connection issue in Cortana, just start with the first one and work your way down until you encounter an option that fixes the problem.

Option 1 – Restart or reset your modem or router

The first thing you can try is restarting or resetting your modem or router. All you have to do is unplug the power cable of the modem and then plug it back in after a few seconds. You could also use the reset button of the modem at the back if it is one. But before you press the reset button, keep in mind that it will erase all the connection credentials and it will be set back to its default settings. After rebooting the network, you can restart your computer to force your modem or router to reassign an IP address to your computer.

Option 2 – Restart Cortana

Restarting Cortana can help you resolve the issue.

• To restart Cortana, open the Task Manager, right-click on Cortana and select the “End process” option.
• Then go to the File tab and select “Run new task”.
• After that, type in “cortana.exe” and press Enter to restart the process.

Option 3 – Try to remove Proxy

Removing the Proxy might also help you in fixing the connection issue in Cortana. Here’s how you can do it:

• 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 4 – Open another app that uses a Microsoft account

This might seem like an odd fix, however, a couple of users tried doing this and it worked for them as it allowed Cortana to connect to the internet again. In this option, you just have to launch another app that uses your Microsoft account information in the same way as Cortana, for instance, the Store app. Once you open the app, a prompt should appear along with a dialog box that allows you to update your Microsoft account with the information required. After that, restart your computer and check if Cortana is now able to connect to the internet or not.

Option 5 – Verify your Microsoft account

In some cases, Cortana might not be able to connect to the internet because your Microsoft account is no longer verified. This usually happens when you use a two-step authentication system with your Microsoft account. To verify it, just open Settings and click on Accounts. After that, check if you have a Verify hyperlink under your Microsoft account or not then click on Verify. Afterward, follow the next on-screen prompts to verify your Microsoft account. Once your account is verified, restart your computer.

Option 6 – Reset Cortana settings

• Open Cortana and go to the Settings section where you’ll see the “Turning off Cortana clears what Cortana knows on this device, but won’t delete anything from the Notebook. After Cortana is off, you can decide what you’d like to do with anything still stored in the cloud” option. Turn this option off.
• Restart your PC.
• After your computer boots, launch Cortana again and check.

The SearchUI.exe file is the one that manages the search feature of Cortana. However, a number of users have recently reported that this feature stops responding within minutes of booting their Windows 10 computer. This kind of problem could be caused by missing system files or some issues with the Cortana program itself. And so if the SearchUI.exe file is not responding, then you wouldn’t be able to use the search feature of Cortana. But worry not for this post will walk you through fixing this problem. Before you troubleshoot the problem, you can try to restart your computer and see if it helps, if it doesn’t, then proceed to the given options below.

Option 1 – Try to run the Search and Indexing troubleshooter

You might also want to run the Search and Indexing troubleshooter in Windows 10 as it checks whether the settings for Cortana are in place and automatically corrects any issues if the update or software installation has changed the settings. To run it just click on the Start button and select Settings > Updates and Security > Troubleshoot. From there, select the Search and Indexing Troubleshooter.

Option 2 – Restart Cortana’s process in the Task Manager

Restarting Cortana’s process in the Task Manager could also help you resolve the problem. Refer to the steps given below to do so.

• Tap the Ctrl + Alt + Del keys to open the Security options window.
• From there, look for the Task Manager in the given list and open it.
• Next, look for the process of Cortana and right-click on it, and then select the End Task option to end its process.
• After that, the Cortana process will restart by itself and re-initialize.

Option 3 – Try resetting Cortana

• Open Cortana and go to the Settings section where you’ll see the “Turning off Cortana clears what Cortana knows on this device, but won’t delete anything from the Notebook. After Cortana is off, you can decide what you’d like to do with anything still stored in the cloud” option. Turn this option off.
• Restart your PC.
• After your computer boots, launch Cortana again and check.

Option 4 – Try running the DISM tool

You can try running the Deployment Imaging and Servicing Management or DISM tool to fix the Windows Upgrade problem. Using this built-in tool, you have various options such as the “/ScanHealth”, “/CheckHealth”, and “/RestoreHealth”.

• Open the Command Prompt with admin privileges.
• Then type in the following commands and make sure to hit Enter right after you type each one of them:
  • Dism /Online /Cleanup-Image /CheckHealth
  • Dism /Online /Cleanup-Image /ScanHealth
  • exe /Online /Cleanup-image /Restorehealth
• Do not close the window if the process takes a while as it will probably take a few minutes to finish.

Option 5 – Try to reinstall Cortana

If none of the options given above works, you must consider reinstalling Cortana.

• First, right-click on the Start button and click on the Windows Powershell (Admin) option from the list.
• Next, type the following command and hit Enter to execute it:

Get-AppXPackage -Name Microsoft.Windows.Cortana | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)AppXManifest.xml"}

• Restart your computer and check if Cortana is now able to connect.

Option 6 – Try troubleshooting the problem in a Clean Boot State

There are instances that some conflicting programs installed in your computer might be the one that’s causing some issues with Cortana or causing the SearchUI.exe process to stop. To identify which program is causing the problem, you need to put your computer in a Clean Boot State. To do so, follow the steps below.

• Log onto your PC as an administrator.
• Type in MSConfig in the Start Search to open the System Configuration utility.
• From there, go to the General tab and click “Selective startup”.
• Clear the “Load Startup items” check box and make sure that the “Load System Services” and “Use Original boot configuration” options are checked.
• Next, click the Services tab and select the “Hide All Microsoft Services” check box.
• Click Disable all.
• Click on Apply/OK and restart your PC. (This will put your PC into a Clean Boot State. And configure Windows to use the usual startup, just simply undo the changes.)
• From there, start to isolate the problem by checking which one of the programs you installed recently is the root cause of the problem.

Error Code 0xC004C770 – What is it?

If the Error Code 0xC004C770 popped up on your computer during your activation of the Windows 10 software, don’t worry. This is a fairly common error, especially for people who own more than one computer upon which Windows 10 is installed and activated. The gist of this error code is that the product key that you have entered has already been claimed or used on a different computer. Because there are limitations on the number of computers that can use any given license activation code or product key, this error code can arise when you have exceeded that limit. If you have a single-use license and have already entered the particular product key onto another machine, you may see this error come up during activation.

Both Error Code 0xC004C770 and Error Code 0x803FA071 arise from the same problem and the same steps can be used to resolve both error codes.

Solution

Error Causes

Error Code 0xC004C770 is likely to appear on your screen during activation of Windows 10 if you or anyone else in your organization have already entered in the product key used on another computer. If you have a multiple-use license, the product key that you are entering may already have been used for the maximum number of computers allowed under that license.

Further Information and Manual Repair

There are two basic methods for addressing the issues associated with Error Code 0xC004C770. These methods can easily be implemented by anyone who is comfortable interacting with the Windows Store from their computer, which makes the resolution of this particular error code fairly simple and straightforward.

If you are unable to complete the steps below or Error Code 0xC004C770 has not been resolved after following the guides below, contact a Windows technician who is familiar with the Windows 10 activation process to assist you in the process. You can also get in touch with the Windows technical support team to assist you in the process if needed.

Method One: Purchase A New Product Key from Windows

If you have already used the product key on another computer or have used it on the maximum number of allowed devices, you may need to purchase an additional product key for the computer with Error Code 0xC004C770. Product keys can be purchased physically from a retailer that sells Windows 10 software licenses or purchased directly from the Windows store.

To purchase a new product key directly from the Windows Store, follow the steps below:

• Step One: Select the Windows start button at the bottom of your toolbar. Click on “Settings,” then select the option for “Update and Security.”
• Step Two: Click on the “Activation” option.
• Step Three: In the menu that appears, choose the option to “Go to Store” and follow any on-screen instructions to finalize a purchase of the Windows 10 software and product key.
• Step Four: Use the new product key to complete the installation and activation of the Windows 10 software on your computer.

If you are unable to see the “Go to Store” option when you reach the “Activation” page, you may not be set as an administrator of your machine. In this case, get in touch with the support personnel from your company to complete the purchase, installation, and activation process on your computer.

Method Two: Attempt to Finish Activation via Phone

For users who have changed out parts of their computer’s hardware, like putting in a new motherboard or activating a new hard drive, you may have more success if you attempt activation through a phone.

In order to activate your copy of Windows 10 from your phone, follow the steps below:

• Step One: On your mobile device, open up the search box from the taskbar.
• Step Two: In the search box, enter the phrase “SLUI 04.”
• Step Three: Select the “SLUI 04” option that appears.
• Step Four: Follow the directions given on the screen to complete the activation process for your copy of Windows 10.

As with any error code resolution, if the methods above are not successful or if you are not comfortable with your ability to successfully complete the steps above, get in contact with a qualified professional who is trained in the Windows 10 activation process to assist you or download a powerful automated tool to get the job done.

Are you trying to update your Windows 11 OS and are receiving a 0x800f0905 error? Do not sweat and do not worry we have a couple of solutions that you can try in order to fix this issue. How this error is tied to various things like misconfigured settings, corrupt system files, and more there is no way to present one simple solution that will solve everything in one click.

Therefore we are presenting a couple of solutions that will fix your issue, it is advisable to follow them as presented since they will go from the most common to the more complex one.

Run the troubleshooter

The most common fix and one that will actually repair things most of the time is simply running the Windows Update troubleshooter.

1. Press ⊞ WINDOWS + I to open the Settings app
2. Click on System on the left
3. Click on Troubleshoot in the right part
4. Click on Other Troubleshooters
5. Find the Windows Update section and click on Run
6. Let troubleshooter finish

Reset Windows update components

If the previous solution did not work we will need to do things manually. Follow the steps as presented in order to reset Windows update components.

1. Press ⊞ WINDOWS + S to open search
2. Type in Terminal
3. Select Run as administrator
4. Click on Yes on the User account control (UAC) pop up
5. Press CTRL + SHIFT + 2 to open Command prompt
6. Inside command prompt type each line of a command followed by ENTER after each line:
   net stop bits
   net stop wuauserv
   Del “%ALLUSERSPROFILE%Application DataMicrosoftNetworkDownloaderqmgr*.dat”
   Ren %Systemroot%\SoftwareDistribution\DataStore DataStore.bak
   Ren %Systemroot%\SoftwareDistribution\Download Download.bak
   Ren %Systemroot%\System32\catroot2 catroot2.bak
   exe sdset bits D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;BA)(A;;CCLCSWLOCRRC;;;AU)(A;;CCLCSWRPWPDTLOCRRC;;;PU)
   sc.exe sdset wuauserv D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;BA)(A;;CCLCSWLOCRRC;;;AU)(A;;CCLCSWRPWPDTLOCRRC;;;PU)
   cd /d %windir%\system32
   regsvr32.exe atl.dll
   regsvr32.exe urlmon.dll
   regsvr32.exe mshtml.dll
   regsvr32.exe shdocvw.dll
   regsvr32.exe browseui.dll
   regsvr32.exe jscript.dll
   regsvr32.exe vbscript.dll
   regsvr32.exe scrrun.dll
   regsvr32.exe msxml.dll
   regsvr32.exe msxml3.dll
   regsvr32.exe msxml6.dll
   regsvr32.exe actxprxy.dll
   regsvr32.exe softpub.dll
   regsvr32.exe wintrust.dll
   regsvr32.exe dssenh.dll
   regsvr32.exe rsaenh.dll
   regsvr32.exe gpkcsp.dll
   regsvr32.exe sccbase.dll
   regsvr32.exe slbcsp.dll
   regsvr32.exe cryptdlg.dll
   regsvr32.exe oleaut32.dll
   regsvr32.exe ole32.dll
   regsvr32.exe shell32.dll
   regsvr32.exe initpki.dll
   regsvr32.exe wuapi.dll
   regsvr32.exe wuaueng.dll
   regsvr32.exe wuaueng1.dll
   regsvr32.exe wucltui.dll
   regsvr32.exe wups.dll
   regsvr32.exe wups2.dll
   regsvr32.exe wuweb.dll
   regsvr32.exe qmgr.dll
   regsvr32.exe qmgrprxy.dll
   regsvr32.exe wucltux.dll
   regsvr32.exe muweb.dll
   regsvr32.exe wuwebv.dll
   netsh winsock reset
   net start bits
   net start wuauserv

Well, that was a lot of typing or copy and pasting line by line followed by ENTER after each one but hopefully, your issue is solved. These provided solutions fixed most users' issues with this error but if for some reason this is not the case for you, move to the next step.

Run the SFC scan

If you are still having 0x800f0905 error after previous attempts do the following:

1. Press ⊞ WINDOWS + S to open search
2. Type in Terminal
3. Select Run as administrator
4. Click on Yes on the User account control (UAC) pop up
5. Press CTRL + SHIFT + 2 to open Command prompt
6. Type in sfc /scannow and press ENTER
7. Wait for the scan to finish
8. Reboot the computer

Perform a system restore

If for any reason previous solutions have not provided you with the solution we will try to fix the issue by performing system restore.

1. Press ⊞ WINDOWS + S to open search
2. In the text box type in Create a restore point
3. Click on the closest match in search results, should be Create a restore point
4. Click on System Restore or on Next if there are no points created
5. Choose to restore a point from the list and click on next
6. Review settings and click on Finish
7. Wait for the process to finish and for the computer to restart

Manually install update

If for any reason Windows still cannot install the update, try installing it manually.

1. Go to Windows 11 update history and find the Knowledge base (KB) number for the latest version
2. Go to the official Microsoft Update Catalog
3. Paste the KB number in the search box and press ENTER
4. Click on DOWNLOAD
5. Double click on the downloaded file to launch the installer
6. Follow on-screen instructions and install the update

Perform Windows 11 reset

If nothing worked, reset your Windows 11 to its factory settings to fully repair and reset the whole operating system.