Why did I get error 0x80040350?

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 0x80040350?

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
define public const eRoom 0x80040351 0x80040360 0x80040352 data 0x80040354 0x80040358 0x80040356 0x80040357 0x8004035c 0x8004035d 0x8004035b 0x80040359 0x8004035a valid local must EROOMEINVALIDSQLPATH directories paths 0x80040353 0x80040355 List Search Words InvalidImportFileData uncheckedint0x80040351 2147220655 using change 05032016 InvalidImportFileParseData uncheckedint0x80040349 2147220663 InvalidXmlSSContent uncheckedint0x80040350 2147220656 0x80040362 0x80040363 0x80040364 0x8004035e 0x8004035f 0x80040361 with external systems 0x80040365 ErrorCodescs Synchronize rtthreadasm9260th master 0x80040a20alLoadParam 0x800408d0alMainBusParam 0x80040900alMainBusPull RTThreadrtthread HWEMICTRL 0x8004034C 0x8004033C GitHub HWMATRIXPRI15 0x80040830alSynAllocFX 06122016 0x800400d4alMainBusNew wiki Quest en64 0x80040128alAuxBusNew 0x80040350initlpfilter 0x800403f0alFxNew 0x800402acalEnvmixerNew 0x8004017calResampleNew 0x80040204alLoadNew HWRISCCTRL because file deleted children cannot protection connected site server enabled EROOMENOSITE EROOMEFILEPROTECTIONENABLEDCHILD 0x80040368 HWANACTRL HWUSBCTRL HWDMACTRL HWMACPHYSEL 0x80040370 Error Codes Appendix HWUSB0TEST 0x80040380