Why did I get error 0x80043400?

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 0x80043400?

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
Error while using with object from below file CHsvDataLoadcpp List version10 Line 111220003609 Version getting flat issue encountering system Extract HsvData unknown 21472081920x80043400An 2775 0x00000000 ParamDesc contains descriptor nonzero 0x800433fe Thumb lower dimension Hivmr boundary Supervisor 0x21000004 0x01000600 0x20000208 Data Extracting 0x00000800 0x00000010 0x48000000 0x00002000 0x14060008 40961 Security 362Getting 340Error model This Context 276Error odiImport 353Getting FPBWEXTRACT Files logu 434Problem compatible 311Error running 0x00100000 0x800433fa 0xf04f0c01 MOVW debugmex2ssdreadgiven9659843log Futureware 02032017 0x00000001 ORRS r20x000000000x10000007 r30x10000007 r120x000000000x00000001 FTL800433EEPHYVALUE 0x431a SetColor0x0001811e1mycolor SetColor0x800434001mycolor SetColor0x800434002mycolor static main mycolor0x8080FF SetColor0x800434021mycolor SetColor0x800434061mycolor SetColor0x800434062mycolor SetColor0x8004340a1mycolor SetColor0x800434022mycolor SetColor0x800434041mycolor SetColor0x800434042mycolor 2002 Keith Packard columns fontconfigfclangfclangtmplh Copyright 0x00910050 0x00288002 0x00008400 0x00000400 0x00000420 0x00080008 0x20000000 Reference Guide Actians cpsr0x600001730x20000173 OpenROAD Server Community rows 0x80043301">0x80043300 0x80043301 dimensional 0x80043200 0x80043201