Why did I get error 0x80040330?

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 0x80040330?

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 Error merge mail public operation Microsoft const cannot eRoom Dynamics 0x80040334 address email missing filtered 0x8004032b used 0x80040339-public">0x80040338 being record currently 0x80040332 field 0x8004032f during There unexpected 0x80040331 unknown customer 0x8004032e cancelled user classsectionrow stylebackgroundcolor009600 classsize bytestd classsection rodatastr18td Instruments National deleted again later 0x8004033b 0x80040339 0x8004033a 0x80040340 0x80040341 ErrorCodescs 0x8004033d 0x8004033e 0x8004033f 0x80040337 Search Words HWMACPHYSEL HWDMACTRL 0x80040354 0x80040335 0x80040336 0x80040333 classrange List 0x80040342 FilteredDuetoMissingEmailAddress 2147220689 uncheckedint0x8004032e 23042010 2147220690 uncheckedint0x8004032f UnexpectedErrorInMailMerge 2147220687 uncheckedint0x80040330 UserCancelledMailMerge 2147220688 From Quick start 0x80040345 0x80040343 0x80040344 Programmer 24112017 1d8d6ac42d2e37d119021e020d8b260a92426811 02052011 Sinting MSDN 0x80040350 with Explorer code info Automation While 12122017 Measurement running following Plugin Unsniff Guide Developers What timed messageMAX driver waiting some problem cant time having Discussion 0x80040311 Hello Forums find XXXvi occurred Timeout Resolve 2147220719 Theerror solution throws LabVIEW EROOMEDMCANNOTIMPORTXML docbase master rtthreadasm9260th valid EROOMEDMBADADMINCREDENTIALS been account administration RTThreadrtthread HWEMICTRL 0x8004033C HWRISCCTRL 0x8004034C HWMATRIXPRI15 HWMATRIXPRI12 GitHub HWMATRIXPRI14 HWMATRIXPRI13 UAPIERRASNVALUENOTSET stream stack 0x80040329 0x80040328 Networks Unleash UAPIERRUNKNOWNSTREAMOPER 03022006 result Content EROOMEDMDFCNOTINSTALLED connections Server Codes UAPIERRINVALIDXMLURI value Appendix invalid