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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.
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.
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:
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
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
While running your Windows 7/Windows Server 2008 R2, your system suddenly stops responding out of complete randomness and you see an error message popping up which says something like this:
0x00000050 (parameter1, parameter2, parameter3, parameter4)
The stop error 0x00000050 signifies that there’s a PAGE_FAULT_IN_NONPAGED_AREA problem. If you’ve seen this error on different occasions then you will find the parameters in the message to be varying. That is because they are dependent on your PC’s configuration. Not all Stop errors "0x00000050” occur due to a single issue.
However, the most common problem which is encountered which results in the stop error popping up is due to a pool corruption occurring in the Srvnet.sys file.
This issue might be caused because of software incompatibility or a defective physical memory which resulted in requests for data for a hardware driver or service which was not found in the memory.
If you find the error occurring after you’ve installed a new application or a device driver then you should access Safe Mode and uninstall, disable or remove that application or driver.
For this you have to follow the below-mentioned steps:
“We’re having trouble restarting to finish the install, Error 0x8024a11a, 0x8024a112, 0x80070005 or 0x80070032”And so to fix this problem, this post will give you a couple of possible solutions. Refer to the options given below to get started.
SC config trustedinstaller start=auto
diskpartStep 5: Afterwards, type in either of the following commands to help you in either listing all the Disk connects or all the partitions on those disks formed.
diskpart or list volumeStep 6: Next, you need to select any of the two given commands below depending on the list you entered on the previous step.
select disk # or select volume #Step 7: After you enter the command, it will select the Disk or the Partition you want to select. Now you have to type and enter the following command to clean your drive.
cleanStep 8: Now enter any of the two following commands.
list disk or list volumeStep 9: Then type the next command below to create a specified partition.
create partition primaryStep 10: Once done, type in the following command to select the newly created partition.
select partition 1Step 11: Next, type the following command to mark the selected partition as active.
activeStep 12: Finally, restart your computer to successfully apply the changes made and then see if it has fixed the problem or not.
“SysFader: iexplore.exe – Application Error The instruction at “0×00000000″ referenced memory at “0×00000000″. The memory could not be “read”.”