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Windows Defender Error 0X800705B4

Ways to Fix Windows Defender Error 0X800705B4

The error code 0x800705b4 commonly comes up on Windows versions causing your computer to slow down and eventually even crash. The error comes in the form of the message ‘Error 0x800705b4 application failed to initialize’.There were problems in installing updates.

Common Causes Of Error Code 0X800705B4

Here are some of the common causes for the error code to occur:

·       0x800705b4 error is caused by Windows Defender updates

·       When Windows system files are damaged or the system is corrupted

·       When the update service in the computer is not configured as automatic update

·       Virus or Malware can also cause this error on your Computer

·       Faulty Registry entries


Here are some common methods to fix this error code. You can go step by step and see if it resolves the issue.

Solution 1: Run Windows Troubleshooter

Take the help of Windows troubleshooter to fix this error code. It can identify and fix existing problems automatically after being launched.

1.       Go to Start and type, ‘Troubleshooter’ in the search box

2.       Click on Find and Fix problems

3.       Follow the given commands

4.       Check if the error is now resolved.

Solution 2: Disable Third Party Antivirus And Malware

1.       Click Start, and select Control Panel

2.       Click on Uninstall a program under programs

3.       In the list of installed programs, locate and then click the program that is faulty

4.       Click Remove

5.       Restart computer and check if the error is resolved.


Solution 3: Set The Windows Defender To Automatic

1.       Go to ‘Start’

2.       Type, ‘Services.msc’ in the search box

3.       Click on services on the program list

4.       Type the Administrator password and then click to Continue

5.       Double click on Windows Defender

6.       In the startup box, select Automatic

Solution 4: Update The System

1.       Click on Start button

2.       Select Control Panel

3.       Go to Systems and Security and click on Windows Updates

4.       Click check on Updates, download and install updates

5.       Restart computer and check if the error is resolved

Solution5: Run SFC Scan For System

SFC enabled Windows users to find corrupted Windows system files and repair them

1.       Start Command Prompt and then click the Start button and type cmd in the search box

2.       Right click on the icon and choose to run as Administrator

3.       Type the command sfc/ scannow and press Enter

4.       Allow the commands to run and then close it

5.       If the process is successful then you will get the following message:

‘windows resource protection found corrupt files and successfully repaired them’

‘windows resource protection found corrupt files but was unable to fix them’

6.       Let your system scan and fix the issue

7.       Once done, restart the computer.



The error code 800F0902 is related to a Windows update issue. The error is mostly seen in Windows 7, while trying to run updates. However, there can be more than one cause to this error. Here are some ways to resolve this error code easily.

Common Reasons For Windows 7 Update Error 800F0902

Here are some common reasons why you may get the Windows 7 update error code 800F0902

·       No Internet Connection

·       Corrupt System files

·       Windows update service issue

·       Windows module installer service issue


Windows update Error code 800F0902

Let’s look at the different methods to fix this Windows 7 update error.

Solution 1: Renaming Software Distribution Folder

Before you start with this solution, you need to stop the Windows update service. This can be done by going to Command Prompt. Just follow the steps given below:

1.       Open Command Prompt as Admin by clicking on Start > All Programs > Accessories> Right Click Command Prompt

2.       Click run as Administrator

3.       Type, ‘net stop wuauserv’ and hit Enter

4.       Type, ‘ren c:\windows\SoftwareDistribution softwaredistribution.old’ and hit Enter. (This will rename the Software Distribution Folder)

5.       Type, ‘net start wuauserv’ and hit Enter. (This will Start the Windows update Service once more)

6.       Close the Command Prompt and type Exit and hit Enter

7.       Check if the Windows update is now running successfully.

Solution 2: Restarting Windows Module Installer Service

Here we are going to restart Windows Module Installer Service. Here are the steps for it.

1.       Click On Start

2.       Type ‘Services.msc’ in search and hit Enter

3.       From the given Services, find Windows Module Installer

4.       Click and open its Properties

5.       General tab will show the ‘start’ and ‘Stop’ options

6.       Click on Stop. Again do the same and click on ‘Start’

7.       The service would now be restarted

8.       Check if the error is now resolved.

Solution 3: Scan For Corrupt System Files

1.       Open Command Prompt as Administrator

2.       Type, ‘sfc/scannow’ and hit Enter

3.       Let the scan complete and see if there are any corrupt files. The corrupt files will be automatically replaced.

4.       Check if the error is now resolved.






Windows error code 80070103 (0x80070103) is a common update issue that can occur in Windows 7, 8, 8.1 and Windows 10. The error is often followed by the message ‘Windows could not search for new updates. An error occurred while checking for new updates for your computer’ or ‘Error(s) found: Code 80070103 Windows Update encountered an unknown error’ or ‘Windows Update ran into a Problem’.

Common Reasons Why You Get Error Code 80070103

There can be many different reasons that you may encounter the error code 80070103. Here are some of the most common reasons associated with it.

  • While installing a device driver when the same driver is already installed in the system
  • When Windows update attempts to install a device driver that is not compatible with the existing one. It simply means, the current device driver is of a higher rating than one that Windows tries to install.
  • When updating the existing Windows operating system. This issue is mostly a proxy or an internal conflict issue.
  • Device driver is outdated or is not functioning properly.


There can be different reasons why you are getting this error code and ways to fix the issue as well. Let’s take a look at each one of them.

Solution 1:Update Device Drivers

The first thing that you need to do is check if all your device drivers are updated and working properly. This mainly applies where you recently installed a new device.

You need to update device drivers that has a yellow triangle besides its name in Device Manager. You can download and update all drivers for the system using the Driver Agent Tool. Download and install it and then scan the PC for outdated drivers and finally download all drivers that needs to be updated.

Steps to download device driver manually

  1. Click Start and type, ‘devmgmt.msc’ in the Run box and press Enter
  2. Expand the Device Manager and right click and select ‘Update Driver’
  3. Restart the computer once the update is complete.

Note: You may need to uninstall a device driver to update the latest one.

Solution 2:Hide Update

This method applies in case the error is encountered when upgrading the Windows operating system. The method will stop the Windows update from performing such reinstallation.

  1. Click and check for updates
  2. Click on ‘Optional updates are available’ link
  3. Right click on the update you need to hide before clicking on ‘Hide update’
  4. Complete by clicking to install remaining updates
  5. Click OK and restart the computer.

Solution 3:Configure Proxy Sever Settings

  1. Press Win + R and type cmd and hit Enter to open Command Prompt
  2. Type, ‘netshwinhttp show proxy’ into the prompt

You would be able to view the proxy server settings. Check the computer’s integrity and see if the message flashes, ‘Direct Access (no proxy server)’. Follow these steps from here:

  1. Press Win + R and type cmd in the Command Prompt
  2. Type, ‘sfc/scannow’ in the prompt and hit Enter
  3. Let the scan run through and then check if the error has resolved.



The Windows error code 0x80070426 is a security related issue that can come up in just about any version of the Windows operating system. The error message can come up on the screen suddenly with a message, An error occurred in program initialization. If this problem continues, contact your System Administrator. Error Code: 0x80070426”.

Common Reasons For Error Code 0X80070426

The most common instant when you may receive this error is after upgrading from any Windows operating system to Windows 10 operating system. While the other Windows OS have Windows Security Essentials, Windows 10 comes with Windows Defender which should replace Security Essentials after the upgrade.

However, sometimes the upgrade leads to incomplete replacement of Windows Essential files. This means that the computer will have both Windows Essentials and Windows Defender and none of them will be able to initiate properly. This can lead to the error code 0X80070426.

Other reasons for Error 0X80070426

  • Failure by thr mail app to sync with the computer to retrieve mails
  • Malware or virus infection due to failure of initialization of security feature
  • Possible freezing and crashing of Windows 10 operating system

DIY Solutions to Fix Windows Error 0X80070426

Let’s take a look at the different methods that can be used to resolve this error code.

Solution 1:Use Automatic Repair Utility

For this method, you need to download the automatic repair utility tool called Total System Care. The program will scan and fix any issues that may be there.

The Total System Care will scan the complete computer for Corrupt Registry entries, System Files and other possible threats. Once the scan is complete, you can fix them all. Let the process complete and check if the error is resolved.

Solution 2: Restart Security Service

It’s possible that you may encounter this error because the software licensing service is disabled or it didn’t start after the upgrade. Restarting the service can fix this error in no time. Here is how to go about it.

  1. Disable or remove hardware like DVDs and CDs from the computer and restart the computer
  2. Hold down F8 key before the Windows logo appears
  3. Type ‘services.msc’ in the Command Prompt and hit Enter
  4. Locate ‘Software Licensing’ on the list of services
  5. Right click on ‘Software Licensing’ and select ‘Properties’
  6. Change ‘Startup type’ to ‘Automatic’ and click OK
  7. Restart the computer
  8. Check if the error is now resolved.

Solution 3:Store Repair

  1. Press Win + X together and open Command Prompt
  2. Type, ‘WSReset.exe’ before hitting Enter
  3. Restart the computer if it doesn’t restart automatically
  4. Check if the error is now resolved.

Solution 4: Sync Settings Change

  1. Click ‘Mail’ in the search box top open the app
  2. Click ‘Settings’ before clicking on ‘Accounts’
  3. Click on the email account from the resultant list of email accounts
  4. Select ‘Change mail box sync settings’ and then select ‘email’ option
  5. Restart the computer
  6. Check if the error is now resolved.

Solution 5: Uninstallation of Microsoft Essentials

  1. Press Win + R key together
  2. Type, ‘taskmgr’ in the Run dialog box
  3. Locate Windows Defender Service (Windefend), right click on it and select ‘Stop’
  4. Open Control Panel
  5. Click ‘Programs & Features’ → ‘Uninstall a Program’
  6. Uninstall Windows Essentials and restart the computer
  7. You can also press Win + R and type ‘appwiz.cpl’ in the resultant open dialog box.
  8. Locate and uninstall Windows Essential and restart the computer
  9. Once the computer has restarted, go to Settings and then ‘Update and Security’ and select ‘Windows Defender’.
  10. The error should now be resolved.




The error code 0XC0000185 is a common startup issue that indicates that the computer has run into a serious problem and needs to be repaired. This error can also lead to the Blue Screen of Death (BSoD) and can often occur with Windows 7, Windows 8 and 8.1 operating system. Even Windows 10 has reported to face this error.

If you are getting the error code 0xc0000185 then it indicates that the computer cannot access the required Windows operating system files in the hard disk drive to start. It also indicates that the computer system cannot communicate with the hard disk and there is a problem with the files.

Common Reasons for theError Code 0XC0000185

Common reasons why you may be getting this error code are:

  • Loose connection of the cable connecting your system and the hard drive
  • Missing or damaged boot files
  • Error in the disk drive
  • Damaged disk drive

DIY Solutions to Fix Error Code 0XC0000185 In Windows

Solution 1: Check Wire Connection

  1. Shut down the computer and then unscrew the computer CPU
  2. Check the hard disk to ensure that the cable connection is properly in place
  3. Check if the hard disk and system is not damaged or loose.
  4. Check if the error is resolved.

Solution 2:Automatic Repair

The method will work if you have the Windows operating system recovery media

  1. Insert the recovery media in the right port
  2. Boot from the recovery media
  3. Click ‘Next’ on the resultant Windows setup screen
  4. Choose to repair the computer at the bottom of the screen
  5. Select, ‘Troubleshoot’ from the list of ‘Advanced Startup’ options
  6. Click on ‘Automatic Repair’
  7. Once the process is over, check if the error has resolved.

Solution 3: Check Hard Disk For Errors

  1. Press Win + X key
  2. Click ‘Command Prompt’
  3. Type, chkdsk/R in the resultant dialog and hit Enter
  4. Once the scan completes, restart the computer and check if the problem is fixed.

Solution 4: Restore your system

Sometimes a quick system restore can fix this issue. By doing a system restore the computer reverts to an earlier date. Here is how to go about it.

  1. Insert the Windows operating system installation media into the correct drive
  2. Press F12 once the computer has restarted.
  3. Select the installation media as the boot disk
  4. Select, ‘Next’ on the resultant Windows Setup window
  5. Select ‘Next’ to choose ‘Repair the computer’
  6. Select ‘Troubleshoot’ before you select ‘Advanced Options’ on the resultant screen.
  7. Select ‘Restore’ and pay close attention to the on screen instructions that need to be followed
  8. Check if the error is now resolved.
  9. Reinstall the programs that may have got deleted.

Solution 5: Windows Reinstallation

If none of the other methods has helped, then it is best to reinstall Windows. However, before you do this, take a back up of all your programs and files and avoid losing any important material. With new Windows installed, the error will be automatically resolved.

Windows update Error Code 0X80080008


The error code 0x80080008 comes up when you try to install updates using the Windows update feature. With this error you will be unable to update your copy of Windows. Here is how to fix it.


There are more than one reason for this error code to come and in the same way, there is more than solution to resolve this issue. Here are some simple methods to get started:

Solution 1:Tweak Registry Files

This method involves making changes to the registry entries. Here is how to go about this step.

  1. Open Notepad
  2. Copy and paste the following lines:









  1. Save the file as ‘Reg.bat’. You can name the file anything you want, but the extension has to be ‘.bat’
  2. Right click on the File and run it as Administrator. Provide permission if asked
  3. Reboot PC when everything is done
  4. Now go to Windows update and try installing it
  5. The error should now be resolved

Solution 2: Repair Windows Image

  1. Open Command Prompt as Admin
  2. Type, ‘dism.exe /online /cleanup-image /restorehealth’ and hit Enter
  3. Let the command run through
  4. Reboot the PC
  5. Now try to download the pending updates
  6. The error should now be resolved.




The Windows error code 0x80070017 is a simple updates error that can be fixed easily. The error code indicates, ‘Windows could not search for new updates. An error occurred while checking for new updates for your computer’, ‘Some updates were not installed. Failed: 57 updates’ or ‘Error(s) found: Code: 0x80070017 Windows update encountered an unknown error’. This error is seen in Windows 7, 8, 8.1 and Windows 10 operating systems.

You may also get the error message stating, ‘Windows Cannot Copy files required for installation. The Files may be corrupt or missing. Make sure all files required for installation are available, and restart the installation. Error code: 0x80070017’.


Common Reasons Why You Are Getting Error Code 0X80070017

Here are some common instances when you may get this error:

  • When installing or reinstalling the Windows operating system
  • When Window update is running
  • Upgrading Windows operating system
  • Virus or malware infection with damaged system files
  • Outdated system drivers
  • Corrupt Windows registry
  • Faulty DVD
  • Compatibility issues with hardware or program



Here are the different methods through which you can fix this error code:

Solution 1: Troubleshooting

These are some of the basic things that you need to do to resolve this error. Try to perform the following:

  1. Run antivirus software to get rid of any virus or malware
  2. Check that your system is updated by downloading and running the Driver Agent Software
  3. Run a reliable registry cleaner tool to fix any issues with Windows Registry
  4. Make sure that your installation drive is clean and working properly
  5. Use a separate DVD to perform installation
  6. Check there is enough memory to run the installation
  7. Check now if the error is resolved.

Solution 2:Disable Security Software

Sometimes the error is caused just because the computer system’s security software is restricting smooth installation of the Windows Installer files or has modified the installed files. Just disable the security software and then attempt another round of installation.

Check if that resolves the error.

Solution 3:Destination Disk Check

This solution will check for any errors and attempts to fix the error if found. Here are the steps to follow for it:

  1. Click Start and type cmd in Run to open Command Prompt
  2. Type chkdsk/r/f in the prompt and hit Enter
  3. Now restart the computer and scan to fix any issues in the destination disk
  4. Now try to do the installation once more
  5. Check if the error is now fixed.

Solution 4: USB Drive Installation

Installing the Windows operating system using a bootable USB drive goes smoothly, however you need the ISO file.

  1. Download and run Power ISO
  2. Insert the USB drive
  3. Click on Tools in the menu and select, ‘Create Bootable USB Drive’
  4. Click to open the ISO file in the resultant dialog box
  5. Restart the computer and boot from the bootable USB drive to perform the Windows operating system installation
  6. Check if the error is now resolved





Blue Screenerror 0xc000021a is one of the various Blue Screen of Death (BSoD) error codes. This error can happen in any version of the Windows operating system. The error can happen while installing a program or adding a new hardware component. You may see the error, ‘Your PC ran into a Problem and needs to restart’. Here are some of the things that you can do, if you are facing this error.

Common Reasons for Error 0XC000021A

There can be more than one reason, why you may see this error code. Here are some of the most common reasons for this error to occur.

  • Damaged Csrss.exe or Winlog.exe files
  • Premature unloading of Wbemprox.dll library
  • Incorrect configuration or corrupt device drivers
  • Insufficient space in the hard disk or partition
  • Damaged or corrupt Windows registry
  • Installed software that is not compatible with OS


Even though this error may signify Blue Screen of Death, there is no need to panic about it. Here are the different solutions you can try that can help fix this error in no time.

Solution 1: Uninstall Software or Hardware

The very first thing that you can do is uninstall the recent software or hardware that you added to your system. Uninstalling the same can fix the error as incompatible software can also cause this error. Just go to the Control Panel and uninstall it from there. If you have added more RAM or Graphic Card, then you can remove it as well. Now Boot the PC and check if the error is fixed.

Solution 2: Startup Repair

  1. Insert the installation device in the right port or drive
  2. Select the preferred language, time, currency format, input method and then click Next
  3. Click, ‘Advanced Options > Automatic Repair’ and then select the operating system
  4. The computer should automatically launch repair
  5. Once the process completes, check if the error is resolved

Solution 3: Use A Configuration That Worked Previously

  1. Start or restart the computer and then press F8 repeatedly before the appearance of Windows logo
  2. Select the configuration in the options menu
  3. Press Enter
  4. The computer will restart automatically
  5. Check if the error is now resolved

Solution 4 – Disable Mis-configured Services

  1. Start or restart the computer
  2. Press Win + R keys to open Run box
  3. Type, ‘msconfig’ in the run box and hit Enter
  4. Navigate to ‘Services’ and check the box that says, ‘Hide All Microsoft Services’
  5. Click on ‘Disable All’
  6. Go to Startup tab and click on ‘Open Task Manager’
  7. Disable all programs that loads Startup
  8. Restart the computer and enable the services one at a time

Solution 5: Restore System

  1. Restart the computer
  2. Press F8 till Windows logo appear
  3. Select Safe Mode and press Enter
  4. Open Command Prompt as Admin
  5. Type, ‘%systemroot%\system32\restore\rstrui.exe’ and follow instructions that come on the screen
  6. Restart the computer now and check if the error is resolved or not.








Error Code 0x80070570 is one of the most common errors and can come up in any Windows operating system. This error code shows a problem with the Windows installation. This error might occur when installing a Microsoft update. The installation may start as expected with the message, ‘Windows cannot install the required files. The file may be corrupt or missing. Make sure all files required for installation are available and restart the installation. Error code: 0x80070570’

Common Reasons For Error Code 0X80070570

  • Virus or malware infection
  • Damaged or corrupt registry files
  • Conflicts in your computer operating system
  • Damaged/faulty installation media
  • Damaged or missing drivers in the installation location (hard disk).


There can be more than one reason for the error code 0X80070570 to occur. Here are some possible solutions for the same.


Solution 1: Simple Troubleshooting Steps

  1. Check if the installation media used is not damaged or faulty
  2. Check the status of the installation drive in use
  3. Check that the DVD drive or USB ports are not damaged and functioning properly


Solution 2 – Attempt Re-Installation

  1. Go for another round of installation, immediately after the error has occurred.
  2. Click ‘OK’ to resume installation
  3. Check if the error has resolved.

Solution 3 – Run Disk Check Utility

The Windows operating system built-in disk check (chkdsk) can help resolve the error in no time. The utility scans the hard disk and tries to repair the damaged files. These steps are specifically for Windows 10, however works for other versions as well.

  1. Press Win + X key and open up menu
  2. Select ‘Command Prompt’ with Admin access
  3. Click ‘Yes’ to run Command Prompt as Administrator
  4. Type ‘chkdsk’ leave space and type C (drive that needs scanning)
  5. Let the disk run and present damaged files if any.
  6. Type ‘/f/r/x’ immediately after the drive letter.

Note: Letter ‘f’ tells the utility to fix errors, letter ‘R’ tells to identify any bad sectors in the disk and the letter ‘X’ tells it to dismount the drive before the scan starts.

  1. Press ‘Enter’ to run the scan and let it complete before restarting the computer try installation once more.
  2. Check if the error is resolved.

Solution 4: Run Troubleshooter

Simply running Windows Update Troubleshooter can help in fixing the error.

  1. Press Win + W together
  2. Type, ‘Troubleshooter’ and then select ‘View All’ on the resultant screen
  3. Click on ‘Windows Update Troubleshooter’
  4. Follow the on screen instructions and restart the computer
  5. Try installation again and check if the error is resolved.


Solution 5: Update System Drivers

Drivers are very important components of the computer system. They make it possible to communicate between the system and all installed programs and applications.

  1. Right on ‘My Computer’ and select ‘Properties’
  2. Select ‘Device Manager’
  3. Navigate through all listed devices and check for any device with yellow exclamation mark
  4. Right click on such device and select ‘Update Driver’
  5. Restart the computer after the update and then attempt installation once more.






If you are getting the error code 0x8007007B it means that there is a problem with your Windows Activation. The error code is followed by a message, ‘The filename, directory name or volume label syntax is incorrect’. It will then direct you to go to the Control Panel to find how you can activate the Windows. The error can happen when you use a volume licensed media to install Windows 7, 8 and 10. It can also occur when installing Windows Vista and Windows Server 2008 and 2012.



Solution 1: Activate Windows Via Phone Call

One easy way to fix this issue is by calling Microsoft and telling them to activate it for you. Here is how to go about it.

  1. Open the search menu and click on the ‘Start’ key if you are using Windows 7 or Win + F to access search menu if you are on Windows 8, or 10.
  2. Type slui.exe 4 and press Enter. A new window will open. You can also access this window using Run command
  3. Press the Win + R keys and then type slui.exe 4 in the new window
  4. Click ‘OK’ and the phone activation window will open.
  5. Select the country from the drop down list and then select the phone activation option
  6. A new window will open with a toll free number that you can call
  7. You will be asked to provide the installation ID by the caller on the other side. They will then provide you with the activation code.

Solution 2: Activate With Product Key Dialog

To resolve this error, you can use the Command Prompt

  1. Press the Windows key and type cmd
  2. Right click on the Command Prompt and select open as Administrator
  3. Type slui 3 in the Command window and press Enter
  4. A new dialog box opens where you can enter the Windows product key
  5. Restart the computer once the process is complete
  6. The Windows will be activated and the error code will be resolved.

Solution 3: Activate Via The Command Prompt

  1. Click on ‘Start’ and search ‘cmd’.
  2. Right click on Command Prompt and select run as Administrator
  3. Press Win + X and then click Command Prompt with Admin access
  4. Type the code together with the activation key and press Enterslmgr.vbs -ipk<ACTIVATION KEY GOES HERE>
  5. Once the process is complete, confirmation of the product key will be displayed
  6. Type slmgr.vbs -ato and press Enter to activate the Windows
  7. Restart the computer for the changes to take effect

Solution 4: Activate With Previous Product Key

If you bought a computer with pre-installed Windows and then you upgraded it, then you would require the activation key. Here’s how to identify it.

  1. Press Win + X and select Command Prompt
  2. Enter the code ‘wmic path SoftwareLicensingService get OA3xOriginalProductKey’ and press Enter
  3. The previous product key will be displayed. You will require this for activation
  4. Click on Start and select ‘Settings’.
  5. Select the option for update and security and select the activation option
  6. Click the option to change the product key and enter the code. Accept the code and your Windows will be activated without any error.






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