Why did I get error 0x80042543?

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 0x80042543?

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
VDSEGPTATTRIBUTESINVALID disks supported attributes were Invalid 0x80042544 0x80042542 specified VDSEMEMBERISHEALTHY Dynamic MSVDS clusters operating system vdserrh VDSEFAULTTOLERANTDISKSNOTSUPPORTED fault tolerant 0x80042545 member Error 0x80042546 Protocol Service Disk Virtual 0x8004253F Software Intellectual Property User 0x004 Sleuthing HRESULTS 0x80042549 0x80042541 0x80042547 0x80042548 0x80042540 0x8004254D 0x8004254A 0x8004254B HRESULT0x80042543L ProgramFilesx86Windows SystemUInt32 define UInt32 2147755332 Kits10Include100162990umvdserrh16690 7678102 2147211965 9539 MagNumDB 27092011 9538 Database 2147755331 Magical Number Microsoft codes VDSEPACKNAMEINVALID MSDN FACILITYITF management userdefined designated from returned methods 14072016 VDSEMEMBERREGENERATING regenerating stale detached Interface 0x80042539 0x8004253A 0x80042537 0x80042538 0x8004253D 0x8004253E 0x8004253B 0x8004253C symbol HRESULT COMOLE means 0x80042535 0x80042536 win32 ErrorCode