Why did I get error 0x800000DA?

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 0x800000DA?

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
0x00000018 0x00000010 Kernel Octal Binary import numeric node Keypad 0x800000d9 Wiki VexExpansionRatio Firmware PUT304 0x800000DAI64 exitCall ISP2400 PUT336 0x800000DCI64 0x800000d6 0x800000d8 0x800000d5 003954 christos t0I64 IMark0x800000D4 vexchase Valgrind cachegrind Manual Advantech User PCI12451265 Series 0x800000dc InvalidPathMoveMode InvalidCounterNo InvalidGpMovCmd SpeedCurveNotSupported 0x0201f800 0x59a80837 0x48035037 0x48034002 0x0401f004 0x59a00208 0x803c7d40 0x483f3819 0xffff1fff 0x599c7819 0x823c7d00 20120605 SDLScanCode SDLKey documentation page combined GitHub 19012016 JayFoxRoxxqemu KPBINARY2180x800000DAKeypad KPOCTAL2190x800000DBKeypad 0x8000001b 0x80000060 0x80000000 rv2pp1h Supermicro KPOCTAL 0x800000DB 08022011 0x800000a0 StuartPBentleyCombinedKeyTable 0x80000028 idxpoint address0x4 file idExample slaves NetBSD unicodedata320cv idFitelctrlfifotx size0x4 fwinfoendpointwidth2 WowPacketParserBattlenetRpcErrorCodecs master NtClose HalDiskCachePartitionCount 0x800000BB GitLab 06092016 FEDtoolsettingsaddrtablemultichanxml TrinityCore ERRORUSERSERVERGAMETIMEREMAININGPOORLYFORMED