Why did I get error 0x800001DA?

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 0x800001DA?

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
0x00000010 disabled cpsr ICache mode OSPF DCache Raspberry 0x800001d8 View value encountered 19216821 GitHub 10440148 RC0x0 reserved 1400 topic invalid SparkFun 0x9ff9 zz1016429 Olimex Ubiquiti Networks Community compatibility 0x00008224 bcmrpi2cpu1 failover 28072016 zz10164 1526 0x8000005b yy1956427 yy19564 0xb07d RPI2 sequence type address 17230171172 0x800001e3 exampleospfyaml CPAN 17216255255 netmask 25525500 routerid metric 1438 forward 0000 state debugrequest current Gist ARMUSBOCDH openocd090 libftd2xx1 UNRECOGNIZED 0x800001dc 0x800001df 0x800001e1 zakkaklbbind 0x000080d8 lbbindunicodedata320c master errors 12112012 101151193 1921681621 table Switching Cisco 1921681623 0x80000C6B 0x3919 1004 0x49EB 1011562 routing ospfwrite failed 1020016 quaggausers 13239 sendmsg 10500 0xfe0b Database 10300 0x17f4 1030016 RDM2 MsgWMACTIVATE Mp1TRUE 0x800001d2 0x800001d4 0x800001d6 MsgWMSETFOCUS Electronics Halt Mp20x800001DA HWND MsgWMSETSELECTION christos JTAG 09052016 0x00008018 10115181 1921681622 FT2232H unicodedata320cv 20120605 003954 ttbcr 0ttbr0 NetBSD