Windows Update Error 0x800703e6

Thanks for replying

But i have tried all these things earlier also and when you replied then also 

Sfc/scannow

Says windows resource protection could not start

Dism command shows an error

And when i give other commands down below system says could not find

Then try a repair:

I recommend an in-place upgrade repair.

To repair Windows without losing any data then follow the instruction here:

https://www.tenforums.com/tutorials/16397-repai...

This will also upgrade you to the latest version of Windows - currently 1909.

In a nutshell you just insert the Windows 10 media (USB/DVD) & run setup from within Windows.

Please note a repair install is not a reset, this is a last attempt at repairing a PC without a clean install. If this fails to repair the problem then usually a clean install is required.

Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.

Some suggestions:

Open powershell with admin & enter:

SFC /SCANNOW

DISM /Online /Cleanup-Image /StartComponentCleanup

DISM /Online /Cleanup-Image /RestoreHealth

Have you tried resetting the update components?

Open cmd prompt/powershell with admin & enter:

net stop wuauserv

net stop cryptSvc

net stop bits

ren C:\Windows\SoftwareDistribution SoftwareDistribution.old

ren C:\Windows\System32\catroot2 Catroot2.old

net start wuauserv

net start cryptSvc

net start bits

Restart the PC & try updating again.

If this fails/doesn’t correct the problem then click start, run, type regedit & click enter & find: HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate

Try deleting the entries WUServer and WIStatusServer in the right pane if they’re there, if not don’t worry.

Disable any third party antivirus software.

Temporarily disable the Windows firewall (if using Defender) for both Public & Private connections - remember to reenable these after updating.

sfc/scannow :

says windows resource protection could not start the repair service

DISM :

It says Error : 998

And resetting the update components is doing nothing :(

I Have tried disabling the third party anti virus but that also doesn't work 

and regedit one also is not doing anything

Here is what the error code means:

0x800703e6

Invalid access to memory location.

Step 1:

Press: Windows key

Type: disk cleanup

run disk cleanup as Administrator

scan C drive

select "Windows update cleanup" checkbox

Hit OK to clean up drive

reboot system

try to update again

Step 2:

If previous step doesn't work

Press:Windows key

type: Settingshit enter

type: Trouble

select: "Troubleshoot settings"

Scroll down, in the list click on "Windows update"

Let troubleshooter try to solve the problem.

reboot system

Try to update again

Step 3:

If previous steps doesn't work

https://gallery.technet.microsoft.com/scriptcenter/Reset-WindowsUpdateps1-e0c5eb78

Download the script by clicking on a script name button, save to *C:* drive root

Right click on start button

select Powershell (Administrator)

Copy/paste bellow code into the console:

Set-ExecutionPolicy -Scope LocalMachine -ExecutionPolicy Unrestricted
cd \
.\Reset-WindowsUpdate.ps1
Set-ExecutionPolicy -Scope LocalMachine -ExecutionPolicy RemoteSigned

Hit Enter and wait for operation to complete

reboot system

try update again.

Step 4:

If previous steps do not work:

visit bellow link and do one of the recovery options:

https://support.microsoft.com/en-us/help/12415/windows-10-recovery-options

You are interested in following recovery options in this order:

1. Restore from a system restore point

2. Reset your PC

Does this solve your problem?