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How to fix Windows Update Error 0x80240440


Often we know many window users will be stuck with an error 0x80240440 while trying to update the server to enhance security patches.

On a regular user basis, Microsoft tries to launch and release many latest updates for its Windows users. In order to enhance the work efficiency and the security of the server.

Our technical team support will fix the window update error 0x80240440 under our server management plan. You can also take assistance from our technical team support 24/7 for fixing the error or any sort of installation and migration.


The error message looks like the one given below:

Also, the windows update log located at %windir%/windowsupdate.log will report the following:

+++++++++++ PT: Synchronizing server updates +++++++++++
+ ServiceId = {9482F4B4-E343-43B6-B170-9A65BC822C77}, Server URL =
WARNING: Nws Failure: errorCode=0x803d0014
WARNING: Original error code: 0x80072efe
WARNING: There was an error communicating with the endpoint at ''.
WARNING: There was an error sending the HTTP request.
WARNING: The connection with the remote endpoint was terminated.
WARNING: The connection with the server was terminated abnormally
WARNING: Web service call failed with hr = 80240440.
WARNING: Current service auth scheme='None'.
WARNING: Proxy List used: '(null)', Bypass List used: '(null)', Last Proxy used: '(null)', Last auth Schemes used: 'None'.
FATAL: OnCallFailure(hrCall, m_error) failed with hr=0x80240440
WARNING: PTError: 0x80240440
WARNING: SyncUpdates_WithRecovery failed.: 0x80240440
WARNING: Sync of Updates: 0x80240440
WARNING: SyncServerUpdatesInternal failed: 0x80240440
WARNING: Failed to synchronize, error = 0x80240440
WARNING: Exit code = 0x80240440

Reason to cause the error.

Windows Update continuously fails to search for Updates or cannot install them. These are some common errors.

1. Windows Registry

2. Windows Filesystem

3. Internet access

4. Windows Update service

5. File corruption

6. Misconfiguration

7. Adware

8. Virus and Malware

Steps To Fix Windows Update Error 0x80240440

Clean the Windows Update temporary cache folder: 

Follow the steps to clean the Windows Update temporary cache folder.

Stop the Windows Update service

In the run prompt type “services.msc” >>> click ok

A new window will be a popup with all Windows services on the system.

Right-click on the “Window update” service >>> click stop.

Clean the Windows Update temporary cache folder

In the run, prompt type the %windir%\SoftwareDistribution\DataStore and then click the ok button.

This will open Windows Explorer in the correct location.

Here you can delete all contents of this folder.

Start the Windows Update Service

Type “services.msc” in the run prompt >>> click ok 

Here you can a new window displayed on the screen which contains all Windows services on the system.

Right-click on the “Windows Update” service >>> click start.

Run the System File Checker (SFC) utility

In the SFC utility where you can scan the damaged Windows system files and can restore the required one. It is an in-built tool to check the filesystem

Use the following steps to run the SFC

Type “cmd” in the Run prompt >>> press Ctrl+Shift+Enter to run the command.

Later, enter the password if prompted >>> click OK.

 Finally, run the following command.

sfc /scannow

Try to restart the server, soon after the SFC process finishes.

Clean Windows Update download path

Type regedit in Run prompt >>> click Enter.

Navigate to


Once you found it, search for WUServer and WIStatusServer in the right-hand pane.

If you didn’t find the list, we cannot clean the download path. Otherwise, delete both.

Finally, restart the server.

Disable Application Control in Sonicwall NSA

There will be strange network connectivity issues while enabling the Application Control in Sonicwall NSA. It’s because the app control rule will block the traffic that leads to invisible in the list of applications.

However, it can be found in the logs.

Use the “Lookup Signature” for finding the corresponding rule. By disabling the block option that allows the windows update to work properly.


In brief, follow the various methods to resolve Windows Update Error 0x80240440. For more assistance, you can contact our technical team support dedicated 24/7.

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