A Quick Way to Fixing Error 0x8007045D

DRIVER_IRQL_NOT_LESS_OR_EQUAL will cause your computer to go to the blue screen of death but do not worry there are solutions around this and we are here to instruct you on how to solve this.

1.  Uninstall and install network drivers

   DRIVER_IRQL_NOT_LESS_OR_EQUAL is most commonly tied to bad network drivers, whatever that be a corruption of the driver files or their incompatibility. So first thing is to check if this is the case. Press ⊞ WINDOWS + X to open the hidden menu in Windows and click on Device Manager. In the Device Manager expand Network adapters, choose adapter, right-click on it and choose Uninstall. Install latest driver or reboot so Windows will install the driver automatically

2. Update driver

   If you do not want to reinstall the driver or you are unable to for whatever reason updating the driver might do the trick. To update driver: Press ⊞ WINDOWS + X to open the hidden menu in Windows and click on Device Manager. In the Device Manager expand Network adapters, choose adapter, right-click on it and choose Update Driver.

3. Fix via Command prompt

   If both of the beforementioned solutions fail, try running the command prompt and fix the issue from there. Press ⊞ WINDOWS + X to open the hidden menu in Windows and click on Command Prompt (administrator) In command prompt type next line and press ENTERDEL /F /S /Q /A “C:\Windows\System32\drivers\mfewfpk.sys Reboot the system

4. Scan your PC for malware

   Sometimes corruption in the system is caused by malware, Scan your system for malware, viruses, etc.

5. Check connections or other hardware issues

   If all methods fail, open your PC case and check to see if connections everywhere are properly connected and tight. Clean your PC and turn it back ON

6. Use system restore

   If anything fails, use Windows system restore and bring back computer into a state where everything was working fine.

Recently, several Windows 10 users have reported an issue with the Windows folder sizes in their PCs. If you are one of these affected users, read on as this post will walk you through fixing this issue. For instance, if you have a folder with 100 GB worth of data and when checking its size using its properties, you see the wrong size instead of 100GB. The size displayed will most likely be a random number which can either be bigger or smaller than the real size of the folder. This incorrect folder size issue does not happen to any specific drive or certain kinds of folders as any folder can be affected by this incorrect folder size issue. When you try to rename the affected folder, the size will change but its size still remains to be incorrect. The root cause of this particular issue is in Windows 10 itself. It is a known bug that came along with one of the latest Windows Updates which prevents the File Explorer to accurately read the metadata of a certain folder or file and leads to displaying incorrect and unexpected file sizes and the reason why you might also notice that your drive is also not correct. Since this is brought upon by one of the recent or latest Windows Updates the good thing is that Microsoft will most likely release a fix on its next upcoming updates but until then, you will be left with no choice but to deal with an incorrect folder or file size. To remedy that, here are some suggestions you can try that might fix the problem.

Option 1 – Try using the System File Checker

The System File Checker or SFC is a built-in command utility that helps in restoring corrupted files as well as missing files. It replaces bad and corrupted system files to good system files that might be causing the incorrect folder or file size in Windows 10. To run the SFC command, follow the steps given below.

• Tap Win + R to launch Run.
• Type in cmd in the field and tap Enter.
• After opening Command Prompt, type in sfc /scannow

The command will start a system scan which will take a few whiles before it finishes. Once it’s done, you could get the following results:

1. Windows Resource Protection did not find any integrity violations.
2. Windows Resource Protection found corrupt files and successfully repaired them.
3. Windows Resource Protection found corrupt files but was unable to fix some of them.

Option 2 – Try resetting Windows 10

To fix the folder and file size issue, you can try resetting Windows 10. Doing so won’t get rid of any file in your system – instead of erasing all your media files and documents, this reset option resets all the system settings and files. That way, you won’t have to deal with inaccurate folders or file sizes as you browse and use your files.

Option 3 – Wait for the Windows Update

As mentioned, this is already a known issue and a lot of Windows 10 users have already complained about it to Microsoft so a bug fix will be soon released in the latest Windows Updates.

If you encounter an error saying, “Boot Device Not Found” when you turn on your Windows 10 computer, then you’ve come to the right place as this post will guide you on how you can fix this problem. Apart from the error message, you will also see a message that states, “Please install an operating system on your hard disk, Hard Disk<xxx>”. You will then be asked to tap the F2 key to initiate the System Diagnostics. If you install the Windows operating system, it becomes the boot device, and when your computer boots, the UEFI or the BIOS looks for the operating installed on your drive and continues the process. So when you encounter the “Boot Device Not Found” error, this means that the UEFI or the BIOS wasn’t able to locate the drive where it can boot. There are several suggestions you can check out to resolve this error. You can try checking the connection with your boot drive or change the boot order. You can also fix the Boot Record from Recovery and see if the primary partition is active or not. But before you troubleshoot the problem, make sure that you have a bootable Windows USB drive ready since two of the options provided below will require you to boot into the Advanced Recovery mode. Once you have this covered, proceed to each one of the following options.

Option 1 – Try checking the connection with the boot drive

If you have a custom computer that comes with a cabinet, you might want to open it and remove any connected power supply, and then check the wires. As you know, drives are connected with the motherboard using a cable. So all you have to do is check if both ends are connected properly and make sure that the connection is not loose. You could also try to unplug the cable and plug it back in.

Option 2 – Try changing the boot order

You might also want to try changing the boot order of your computer. Each time a computer boots, the BIOS or the UEFI follows a boot order. It is the one that tells where to first look for the boot drive and if for some reason, a USB is connected to your computer and the first boot device found in the USB, then you have resolved the problem. All you have to do is to remove the USB device and boot or go into the BIOS and change the boot order yourself.

Option 3 – Try to rebuild the BCD files

The next thing you can do to resolve the issue is to Rebuild Boot Configuration Data or BCD files.

• You can start by booting into the installation environment for Windows 10 from an installation media.
• After that, click on Repair your computer and on the blue screen, select Troubleshoot and then select the Advanced options menu.
• From there, select Command Prompt and once you open it, enter each one of the commands given below by sequence.
  • bootrec /FixMbr
  • bootrec /FixBoot
  • bootrec /ScanOS
  • bootrec /RebuildBcd

• Once you’re done executing the commands given above, type “exit” to close the Command Prompt window and then restart your computer and see if it fixed the “Boot Device Not Found” error.

Option 4 – Try setting the System Partition to Active

Like the first given option, you also have to make sure that you have a bootable Windows 10 USB drive before you proceed to set the System Partition to Active. Once you have it covered, refer to these steps:

• Boot your computer using the bootable Windows 10 USB drive.
• Next, click Next when you get to the Welcome Screen.
• Then click on Repair your computer located at the bottom left part of the window and select Troubleshoot > Advanced Options > Command Prompt.
• After opening Command Prompt, type the following command and hit Enter to start the Diskpart utility. It is a command line-based utility just like Command Prompt but has a UAC prompt once you provoke it. So if you encounter a UAC prompt, just click on Yes to proceed.

diskpart

• Now type the following command:

list disk

• From there, select your primary disk by typing the following command:

select disk number

• After that, list all the partitions on the selected disk by entering the following command:

list partition

• The command you just entered will list all the partitions created on your PC including both types of partitions that are visible to a normal user in the File Explorer as well as the ones created by Windows 10 by default which helps it in storing the boot files and other important system files.
• Now type the following command to select the partition that is usually around 100 MB in size:

select partition number

• Finally, type the following command to mark the partition active:

active

• Then type the “exit” command to exit the disk part utility.

Once it’s done, the primary drive should now be active and you should now be able to boot into your computer without the “Boot Device Not Found” error.

Each time you connect to a Wi-Fi network your PC saves that network password. If for any reason you need to see this password or passwords there are ways you can do it and we are here to show you how. Hello and welcome to error tools where we aim to help you with all of your Windows problems and issues, where we offer our insight on various topics and sometimes go offroad and write something crazy. This time we will offer you a way on how to easily and quickly see how can you find out your memorized Wi-Fi password.

Find your W-Fi password

1. Make sure that you are connected to the Wi-Fi network you wish to find out the password of
2. Open Windows Settings app by pressing ⊞ WINDOWS + I
3. On the left side choose Network & Internet and click on it
4. Click on Advanced Network Settings
5. Inside Advanced Network Settings go to Related Settings
6. Select More Network Adapted Options
7. Right-click on your adapter and select Status
8. Click on Wireless Properties
9. Click on the Security tab
10. Click on enable on Show Character box beneath Network Security key to reveal Wi-Fi password

If you encounter the BAD_SYSTEM_CONFIG_INFO Blue Screen error in your Windows 10 PC, then read on as this post will guide you in fixing this issue. Usually, this kind of Blue Screen error is caused by some issues with the Boot Configuration Data file. The main issue inside of the Boot Configuration Data file is that either some boot order files or older files might be in conflict with the newer ones or the stable ones and thus triggering the BAD SYSTEM CONFIG INFO Blue Screen error. This kind of Stop error also indicates that there is an error in the Windows Registry which is why you need to update potential culprit drivers as well as edit some entries in the Registry if need be. But before you get started, make sure that you create a System Restore Point first. After creating a System Restore Point, try to boot your computer into Safe Mode and then restart your computer normally. However, if it doesn’t work, proceed to the given options below.

Option 1 – Run System Restore

Performing System Restore might help you in fixing the BAD SYSTEM CONFIG INFO 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.

Option 2 – Update or rollback your device drivers

If the first option didn’t work for you, then it’s time to either update or roll back the device drivers. It is most likely that after you updated your Windows computer that your driver also needs a refresh. On the other hand, if you have just updated your device drivers then you need to roll back the drivers to their previous versions. Whichever applies to you, refer to the steps below.

• Open the Devices Manager from the Win X Menu.
• Then locate the device drivers and right-click on them to open the Properties.
• After that, switch to the Driver tab and click on the Uninstall Device button.
• Follow the screen option to completely uninstall it.
• Finally, restart your computer. It will just reinstall the device drivers automatically.

Note: You can install a dedicated driver on your computer in case you have it or you could also look for it directly from the website of the manufacturer.

Option 3 – Try fixing the Windows Registry files

In order to fix the Windows Registry files, you need to make a bootable Windows 10 USB drive and then boot your PC using it. To do so, refer to the steps below.

• Once you see the Welcome Screen, click on Next.
• Then click on the “Repair your computer” option located on the bottom-left section of the window.
• Next, click on Troubleshoot > Advanced Options > Command Prompt.
• After opening Command Prompt, execute each one of the commands listed below in the sequence that they are given:
  • CD C:WindowsSystem32config
  • ren C:WindowsSystem32configDEFAULT DEFAULT.old
  • ren C:WindowsSystem32configSAM SAM.old
  • ren C:WindowsSystem32configSECURITY SECURITY.old
  • ren C:WindowsSystem32configSOFTWARE SOFTWARE.old
  • ren C:WindowsSystem32configSYSTEM SYSTEM.old
• After executing the commands given above, type in the next ones below and make sure to execute them in the given sequence below.
  • copy C:WindowsSystem32configRegBackDEFAULT C:WindowsSystem32config
  • copy C:WindowsSystem32configRegBackSAM C:WindowsSystem32config
  • copy C:WindowsSystem32configRegBackSECURITY C:WindowsSystem32config
  • copy C:WindowsSystem32configRegBackSYSTEM C:WindowsSystem32config
  • copy C:WindowsSystem32configRegBackSOFTWARE C:WindowsSystem32config
• Now type “exit” to close Command Prompt.
• Restart your PC for the changes to take effect.

Option 4 – Run a Memory Check to test RAM

On the other hand, you can also fix the BAD SYSTEM CONFIG INFO Blue Screen error by running a Memory Check using the Windows Memory Diagnostic. Refer to these steps to do so.

• Tap the Win + R keys to open the Run dialog box.
• Then type “mdsched.exe” in the field and hit Enter to open the Windows Memory Diagnostic.
• After that, the Windows Memory Diagnostic will give out two options such as:

1. Restart now and check for problems (recommended)
2. Check for problems the next time I start my computer

• Select any of the given options. After that, your computer will restart and check for memory-based issues upon the restart. If there are any issues, it will automatically them.

Option 5 – Rebuild BCD files and repair MBR files

Like what you did on the third option above, you also have to make a bootable Windows 10 USB drive for this option and then boot your Windows 10 PC using it.

• Once you get to the Welcome Screen part, click on Next.
• Afterward, click on the Repair your computer option located on the bottom-left part of the window.
• Then click on Troubleshoot.
• Next, select the Advanced Options and then Command Prompt.
• Once Command Prompt has been pulled up, enter each one of the following commands and in the sequence that they are given to rebuild BCD files and repair MBR files:
  • bootrec /repairbcd
  • bootrec /osscan
  • bootrec /repairmbr

• Now type “exit” to close Command Prompt and then restart your computer to successfully apply the changes made.

D3dx9_43.dll – What is it?

D3dx9_43.dll is a type of dynamic link library. This is one of the many files contained in the DirectX software collection which is used to load and run most of the Windows PC based games and advanced graphics programs. D3dx9_43.dll error message is displayed when any one of the Microsoft games fails to load. The error message is displayed in either of the following formats:

“D3dx9_43.DLL Not Found" "The file d3dx9_43.dll is missing" "File d3dx9_43.dll not found" "D3dx9_43.dll not found. Reinstalling might help fix this."

Solution

Error Causes

D3dx9_43.dll error may occur due to multiple reasons. These include:

• D3dx9_43.dll files get corrupt or damaged
• Missing Microsoft DirectX file
• Viruses and malware on your system
• Driver issues
• Registry overloaded with invalid entries

If the D3dx9_43.dll error is not fixed timely, it not only causes you a great deal of inconvenience as it hampers your ability to play Microsoft games but since the underlying causes of the error are critical, it can result in serious PC damages like system failure, system crash, and data loss. Therefore to avoid it, it is advisable to resolve the error code immediately.

Further Information and Manual Repair

Though this is a critical PC error but the good thing is that it is easy to resolve. To fix it, you don’t always have to pay hundreds of dollars to a professional technician or be technically sound. Here are some of the best ways to repair and resolve D3dx9_43.dll error on your system:

Check the Recycle Bin

If you get the error message "The file d3dx9_43.dll is missing" then the best method to resolve this error from your system is to check your recycle bin. The Microsoft Direct X file could be there especially if you recently uninstalled a gaming program. Here’s why: dll files are shared by multiple programs. So, it is possible that the program you deleted from your PC also shared the same file to load and run. And because of this reason, the file also got removed from your PC when you uninstalled that particular program. Therefore, check your recycle bin. If you find the d3dx9_43.dll in there, restore it and try running the desired Microsoft game again. See if it works.

Re-Download DirectX

Nonetheless, if you can’t relocate it, try installing the latest version of DirectX on your system. This can be done by downloading the DirectX End-User Runtimes Web Installer on your system from the official Microsoft website.

Update Your Drivers

If the error is related to video card driver, then it is advisable to update the driver. By updating the driver for your video card you can fix the D3dx9_43.dll error instantly.

Repair the Registry

Other reasons for the D3dx9_43.dll error could be corrupt and damaged dll files. It triggers registry issues and sometimes even malware infections. DLL files often get corrupt when the registry overloads with too many files these include mostly unnecessary and obsolete files like junk files, cookies, temporary internet history, invalid and bad registry entries. As the clutter and overload the registry, the important files like dynamic link libraries get damaged. Here cleaning and restoring of the registry is the best way to resolve the error pop-ups like D3dx9_43.dll. You can repair the registry manually however, it is time consuming and somewhat technical. But if you are looking for a simple and a quick fix, then download Restoro.

Try Restoro.

Restoro is a next-generation and multi-functional PC repair tool. It is embedded with a variety of PC fixing and performance-boosting utilities all in one. It includes a registry cleaner with an intuitive algorithm that detects all types of registry issues on your system and resolves them in seconds. It cleans the registry, restores the damaged D3dx9_43.dll files, and repairs the registry. Furthermore, Restoro also includes utilities like an antivirus, Active X controls and class detector. With the help of the in-built antivirus you can scan for viruses and malware infecting your system and remove them right away. It also functions as a system optimizer boosting the speed of your PC dramatically. It is safe, efficient, and compatible with all Windows versions. Click here to download Restoro, resolve the D3dx9_43.dll error, and resume enjoying Microsoft games on your PC.

As you know, the Win + X menu, which is the shortcut context menu, is a useful way to launch several utilizes in Windows such as Power Options, Windows PowerShell, Event Viewer, Device Manager, and so on. However, there are times when you might experience difficulty in identifying the required utility. This is actually a part of the Windows 10 shell that goes out of scope in the customization of Windows 10. However, there is an easy trick you can use to do that. So in this post, you will be guided on how you can rename the options in the Win + X menu in Windows 10. In case you don’t know, the context menu is divided into three groups. Microsoft has categorized the bottom-most part as Group 1, while the middle part is categorized as Group 2 and the first part as Group 3. To rename these options, you need to use File Explorer and follow the instructions laid out below. Step 1: First, tap the Win + E keys to open File Explorer. Step 2: Next, navigate to this path: %LocalAppdata%MicrosoftWindowsWinX Step 3: From there, you should see three folders as Group 1, Group 2, and Group 3. Open the appropriate folder of your choice. Step 4: After that, right-click on the shortcut option you want to rename and then select Properties. Step 5: Next, navigate to the Shortcut tab under the Properties window. Step 6: Now in the text field of Comment, enter the new name of the option you selected. Step 7: Click on the Apply and OK buttons to save the changes made. Note: You can now either Sign back in or sign out of your Windows 10 User Account to see the result of the changes you’ve made. You could also restart the process of File Explorer via Task Manager. This will close the File Explorer as well as the shell components and then only launch the shell components again. In addition, you can check the Win + X menu to see the customized name that you’ve just set for a particular option. As you can see, even though it does not add anything extra, it is still a lot better in knowing how you can customize it.

If you’ve been using your Windows 10 PC for a long time now, you might have come across a couple of issues – from minimal ones to critical ones like the Blue Screen of Death or BSOD stop errors. One of these BSOD errors you can encounter is the DRIVER_IRQL_NOT_LESS_OR_EQUAL Blue Screen error. This particular BSOD error is caused by iaStorA.sys, iaisp64 sys, Netwtw04.sys, nvlddmkm.sys, ndis.sys, wrUrlFlt.sys, and other driver files on Windows 10. This error indicates that a kernel-mode driver tried to access pageable memory at a process IRQL that was too high. When you encounter this error, just like a typical BSOD error, your computer will abruptly stop and you will see a blue screen with an error message saying:

“Your PC ran into a problem and needs to restart. We’re just collecting some error info, and then we’ll restart for you. (100% complete) If you’d like to know more, you can search online later for this error: DRIVER_IRQL_NOT_LESS_OR_EQUAL (wrUrlFlt.sys)”

The iaStorA.sys file is a software component that’s related to the Intel Rapid Storage Technology by Intel. It is a software solution supported by Intel Smart Response Technology which allows the PC to communicate with the hardware as well as externally connected devices. The Intel Rapid Storage Technology enables the Peripheral Component Interconnect Express or PCIe storage support, serial ATA RAID or Redundant Array of Independent Disks 0, 1, 5, and 10 support, and the PUIS or power-up in standby is also supported. To resolve this kind of BSOD error, you have to update, roll back or fresh-install the problematic driver. Refer to the options laid out below for detailed instructions.

Option 1 – Try removing the Intel Rapid Storage Technology or IRST drivers

The first thing you can try is to fix the Wi-Fi driver or the Ethernet driver on your computer to resolve the BSOD error. Take note that this option works not only on Windows 10 but also other Windows versions.

• Tap the Win + R keys on your keyboard to open the Run dialog box.
• After that, type “devmgmt.msc” in the field and hit Enter or click OK to open the Device Manager.
• After opening the Device Manager, click on the “IDE ATA/ATAPI Controller” entry and expand it.
• Next, right-click on all the driver entries that are appropriately labeled, and then click on Uninstall device.
• Now restart your PC and check if the problem’s fixed or not. If not, proceed to the next given option below.

Option 2 – Try updating the Intel Rapid Storage Technology or IRST drivers

If you’ve already tried uninstalling the IRST driver but you’re still getting the DRIVER IRQL NOT LESS OR EQUAL Blue Screen error when you use your Windows 10 PC, then this means that the drivers might be corrupted or not compatible with the operating system version that you are using right now. So to fix the problem, you have to update your drivers. To do that, follow the steps below.

• The first thing you need to do is to go to your OEM’s website.
• Once you’re already on the OEM’s website, go to the Drivers section and get the latest version for your device and then try to overwrite it.

Alternatively, you can also update the drivers via the Device Manager:

• Tap the Win + R keys on your keyboard to open the Run dialog box.
• After that, type “devmgmt.msc” in the field and hit Enter or click OK to open the Device Manager.
• After opening the Device Manager, click on the “IDE ATA/ATAPI Controller” entry and expand it.
• Next, right-click on all the driver entries that are appropriately labeled, and then click the Update driver option.
• Now restart your PC and check if the BSOD error is fixed or not.

Option 3 – Try using the System File Checker via Command Prompt

System File Checker or SFC is a built-in command utility that helps in restoring corrupted files as well as missing files. It replaces bad and corrupted system files to good system files that might be causing the DRIVER IRQL NOT LESS OR EQUAL Blue Screen error. To run the SFC command, follow the steps given below.

• Tap Win + R to launch Run.
• Type in cmd in the field and tap Enter.
• After opening Command Prompt, type in sfc /scannow

The command will start a system scan which will take a few whiles before it finishes. Once it’s done, you could get the following results:

1. Windows Resource Protection did not find any integrity violations.
2. Windows Resource Protection found corrupt files and successfully repaired them.
3. Windows Resource Protection found corrupt files but was unable to fix some of them.

Error 0xA00F4244 or 0x200F4244 is when Windows can not detect the WEB camera in your system and it is usually accompanied by the message: We can’t find or start your camera. There could be several reasons for this error and in this guide, we will cover all of them in order to help you to get back on track and start using your WEB camera which is perhaps now more required than ever in this world we live in.

1. Check privacy settings

   With the latest Microsoft Windows updates come the latest issues and it is not strange that privacy settings can become reset or changed when an update is applied. This is a quick fix to this issue and can be the sole reason why you get this error, go to Windows settings, then to privacy and check to see if the WEB camera is turned OFF, if this is the case turn it back ON and make sure that option Allow apps to access your camera is also set to ON.

2. Check if the camera is enabled

   Sometimes it is by mistake, sometimes by an update but the web camera could be disabled in the device manager of Windows. Right-click on the Windows Start button and click on device manager to open it up, find and expand the cameras category. Right-click on your camera, if it is disabled, you will have the option to enable the camera, if it is enabled and Windows is detecting that it is working fine you will have the option to disable it.

3. Check antivirus settings

   Antivirus and firewall applications are in today's world and life-essential piece of software but they can sometimes create more harm than good, from stopping windows updates to killing important services of applications and preventing internet access being just some examples of their paranoid behavior. Try disabling or turning your protection software OFF and see if your WEB camera will miraculously come back to life. If this is the case, somewhere in the settings of software there is an option that controls this aspect, try to locate it and set it in that way so you are able to use your camera.

4. Reinstall camera driver

   If the previous three solutions failed to produce a satisfactory solution then reinstalling the camera driver might fix the problem. Go to your manufacturer's camera website and download the latest driver for your camera. Go to the device manager and uninstall the driver for the camera, then apply the latest driver and reboot the system.

5. Check connections and cable

   Sometimes an issue is not due to software nature, sometimes it is hardware. Try checking connections and plug the camera in another USB port, twist and turn the cable a little to see is issue cable-related.

6. Check to see if the application supports your camera

   If Windows has detected the camera and is not reporting any issues with it check your application to see if it can detect your camera and that it supports it fully. Sometimes newer applications tend to support only newer camera models. Try to use the camera in other software as well to see if the problem is with the application you are using.

7. Try camera on another computer

   If everything else fails, try the camera on another computer to see if it will work there. If the camera is not working there as well it is probably malfunctioned and broken for good. If it does work there, try to find out what is different in that computer in comparison to yours, maybe it is some service running in the background, certain application configuration, Windows version itself, USB port version, or something else.

Windows defender error 0x800700AA, service can not be started comes when the user is trying to run Windows defender scan on their system. This kind of behavior happens for two reasons mostly, third-party application conflict or corrupted system files. In this article, we will tackle both scenarios and provide you with solutions in both cases.

Third-party application conflict

In this rare scenario when Windows defender can not start scan due to conflict with installed service or application in the system solution is quite simple. Restart your PC into safe mode and run the scan from there. In a safe mode environment, minimum drivers and services are only loaded eliminating any conflicts that might occur when everything is booted. If Windows defender can not run the scan in safe mode and you get the same 0x800700AA error then you can eliminate application conflict as a reason and move to the next solution which will tackle corrupted system files. If you, however, managed to run a scan then you have a rare third-party application conflict, you can boot normally into windows and try to eliminate one by one to see which one is causing the issue. The safest bet would be to start with security software because most of the time that is what causes conflicts in running services and applications.

Corrupted system files

If the previous solution has not provided you with results then you have system file corruption that needs to be fixed. Move from one solution to another as presented below:

1. Run SFC scan

   SFC scan is a built-in Windows tool for solving corrupted system files issues, it is fully automated and does not require from the user any kind of knowledge or information. To run it and scan the system do the following: Press ⊞ WINDOWS + X to open the secret menu Left-click on the command prompt (admin) In command prompt type SFC /SCANNOW and press ENTER Wait for the process to finish, do not interrupt it and once it is done, restart your computer

2. Run DISM scan

   DISM scan is similar to SFC scan but it tackles different types of system file corruption and it is recommended to run it also after SFC has been completed. Please note that for DISM scan to be successful you will need a stable internet connection since DISM will replace corrupted files with new ones downloaded from Microsoft. To run it do the following: Press ⊞ WINDOWS + X to open the secret menu Left-click on the command prompt (admin) inside command prompt type: exe /online /cleanup-image /scanhealth followed by ENTER, then type: Dism.exe /online /cleanup-image /restorehealth also followed with ENTER. Leave scan to finish and reboot your PC