Why did I get error 0x8004023C?

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 0x8004023C?

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
ArcEngine enough static memory error 0x8004023e part 0x8004023d eRoom controller domain pFeatureClass 17032016 Resources esriGeometryError ArcGIS There 0x80040250 unable server necessary complete locate found EROOMEFACILITYNOTEXIST EROOMEFILENOTFOUND File facility exist EROOMENODC does 0x80040251 0x8004024f 0x80040246 0x80040247 0x80040244 0x80040245 0x8004024c 0x8004024a 0x8004024b 0x80040248 0x80040249 0x80040243 Search Words operation 0x8004024e List 0x80040240 0x80040241 0x8004023f 0x8004024d Codes 0x80040217 could defined EGEOMETRYPARTNOTFOUND Constants relation expression EGEOMETRYOUTOFMEMORY EGEOMETRYRELATIONSYNTAXERROR polygon EGEOMETRYPARAMETERTOOSMALL 0x8004026e ArcObjects Java input EGEOMETRYPARTZSARENAN 0x8004025e parameter small ITopologicalOp ITopologicalOperatorbuffer 0x8004023CArcEnginearcWeb 0x8004023CITopologicalOperatorbufferIFeatureClass IFeatureClass pFeatureClassGetFeature1ShapeCopy Appendix ITopologicalOperator pTopologicalOperator ArcMAP EGEOMETRYUNKNOWNERROR unknown string syntax occurred BBSMAX 0x8004023CThere geometry system