Why did I get error 0x80042A00?

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 0x80042A00?

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 server Agent with Altiris VDSENOPOOL r317820 head while unknown Oracle Client Universe login Errors computers version TARGETARCHpowerpc CMSSMS message kernel productionstyle Tool like 0x8004210a Outlook SendReceive markmi Millard dslonlynet 2017 210737 pid11 always Idle Mark threads Previous works failures without Specifying 412002020443 incremental thread buildworld kvmgeterrtest race 0x00000100 DSSCOMSTRTYPEUNKNOWN DSSCOMSTRTYPEUNKNOWNSEN 0x00000101 DSSCOMSTRTYPESTART File Messagesh Reference checking Macros DSSCOMSTRTYPESTARTSEN ErrorCode drive vdserrh panics periodic DSSCOMSTRTYPEFILTER START 0x00000102 contained pool UNIT exactly example does MagNumDB provide enlightenment level needed providing understand Magical UInt32 7678102 2147756544 SystemUInt32 2147210752 VDSEVDISBEINGDETACHED Database HRESULT0x80042938L Kits10Include100162990umvdserrh35570 ProgramFilesx86Windows TCPIP mystery programming MVS38 under Gmane CTCA hope away takes However perhaps solution could reach help proposal feel really alternative provides References info user failedInternal exception methods Internal getting Popup SessionFacadeopenSessionLogon repoproxy occurredhr0x80042a00 Financial Hyperion Details timeout Those manual description following Codes Event time able increasing archive Design antivirus disabling firewall Couldnt program installed dicussed VersionBut Designer Rich WebI tools authentication system same post numbers migrating afternoon Recovery currently latest plugins number 23022011 good Hello process update many setting Mobile installing through updating policies problem port appendix caused shows occurred using researching helpful what might issue HsvDSSystemChange 1619 1618 when cause upgrade 0x000411C1 object Sticky failed attempt