Why did I get error 0x80040903?

Windows Update continous fails to search for Updates or cannot install them. The source of this problem could be various things as
> Windows Registry
> Windows Filesystem
> Internet access

> Windows Update service
> File corruption
> Misconfiguration
> Adware
> Virus and Malware

How to fix Windows Update error 0x80040903?

However, if you’re technically savvy, you can try the steps below:

1. Click Start and start typing on your keyboard for "services.msc"

2. In your search results "services.msc" should show up. Open it with a click.
3. A new windows will open containing all Windows services on your system.

4. Search for "Windows Update"
5. Right-click the "Windows Update" and then click Stop.

We will now clean the Windows Update temporary cache folder:
1. Hold your windows-key pressed and hit "R" key simultanous.
2. A small new windows will appear.
3. Type %windir%\SoftwareDistribution\DataStore in this new window and click OK.
4. This will open Windows Explorer on the correct location.
5. Delete all contents of this folder. (Hint: Use Ctrl + A to select all files and folders)

Now we will start the Windows Update Service again:
1. Switch back to the windows Services.
2. Locate Windows Update.
3. Right-click on it and choose Start.


If the problem still persists, you can run the System File Checker (SFC) utility. This handy in-built tool will check your filesystem.
1. Click Start and start typing on your keyboard for "cmd".
2. In your search results cmd should show up with an black icon.
3. Right-click it and select Run as administrator.
4. If you are prompted for the admin password, enter the password and click OK.
5. A new completely black windwos will open. You can type commands directly into this window.
6. Type sfc/scannow and press Enter.
7. This process will take a long time. You can minimize this black windows and work on.
Come back to the black window after a time and check if the process finished.
As soon as the SFC process finished, restart your computer. After the restart you search for Updates again.


You are still facing the same issue?

1. Restart your computer.

Next thing is to clean Windows Update download path. These steps are only for expirienced user! If you mess up your computer with Regedit, you could loose your files! Take care or use a professional tool to investiagte your computer.
1. Hold your windows-key pressed and hit "R" key simultanous.
2. A small new windows will appear.
3. Type regedit in this new windows and hit Enter.
4. In the new windows you have a navigation on the left side. Use it to navigate to
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate
5. Once you found it, search for WUServer and WIStatusServer in the right hand pane.
6. If they are not listet we cannot clean the download path. Othwerwise delete both.
7. Restart your computer.

Try to search for new Updates again.
You are still facing this issue? I think this is not an usual problem and your computer should be checked by professional.
Try to look for a solution here or search further in the search box below.



Advanced information

The following Windows verisons are affected by this error:
> Windows Vista
> Windows 7
> Windows 8
> Windows 8.1
> Windows 10
> Windows 10 Redstone 2
> Windows 10 Creators Update
> Windows Server 2008 R2
> Windows Server 2012
> Windows Server 2016
Failed class Error InfoSource create 0x80040901 using Xbox Codes Intel 0x80040904 object property instance spawn rename 0x80040902 Status safe IscLiveLink summary Informationen array following PROSet Windows Klasse Search konnte service Code Manager Device call Help Installation Guide Oracle Calligo Version because fail rule technical operation static public Users Provider must returned uint32 internal from StatusCode adapter management teams certain recovery basis Fehlermeldungen action severity 13112014 application facility Benutzerhandbuch erstellt nicht Instanz werden fehlgeschlagen PutEigenschaft Klassenobjekt Kein Network ISCUserDb 0x80040505 document reserve 01062009 Center iscodbc 0x80040605 Yumpu Adapters Family Manual Owners used Classes Dell rootIntelNCS2 Listing Directory Seite sind Reporting Tips searching again trying 0x80040909 0x80040908 type Unexpected return 0x80040905 diese 0x80040907 0x80040906 before exactly enter Examples shown encountered verfgbarWeitere keine youve Support check time alerts Live save Note 0x87df2ee7 outages generated traced work GitHub Win32Constantscs didnt June DirectX That 2010SamplesMediaUI MicrosoftWin32 namespace details httpmsdnmicrosoftcomenuslibrarycc231196aspx SystemThreadingTasks SystemDiagnosticsContracts SystemCollectionsConcurrent SystemThreading SystemReflection x86Microsoft Beginners solved DXUTFindDXSDKMediaFileCch GameDevnet fontdds DXUT while find cant path media Files VRETURNDXUTSetMediaSearchPathLCProgram tried LUIFontdds MAXPATH First hrDXUTERRMEDIANOTFOUND