Why did I get error 0x80000100?

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 0x80000100?

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
bootparams KERNEL32dll 0x80000000 Number rounding type segment datasheet application Program 0x00000002 header exception install caused windows info ultimate Unknown from ubuntu controlled mode which even 0x8000007C ties round nearest desktop point trying everytime code0x80000100 floating unsignedfloat 03122013 Typical error where been Lists 27092011 OMAP2430 Mailing OMAP2 specifc mapio sdp2430 Texas Instruments reserve Khasim board Maintainer Syed Segmentation fault 64bit results 0x8000007D UBoot fdtgrep 18022016 linuxphandle phandle PATCH 0x00000000 enablemethod spintable cpureleaseaddr Groups Nexus device MACHINESTART code Google 0x80C00100 devices note Archive with UMTS nonumts mean Binary 10000000000000000000000100000000 Hexadecimal Conversion Decimal 2147483904 Dotted Open what does 15022016 module 00237b8396ec cross 0x100 Text 0x2be00 table Other information bytes 0x8002df00 Cannot Microsoft 0x8002beff 0x2bf00 Data processorspecific format AN75779 exampleGPIFII reference circuit notes 32bit 0x2E728B060x200001020x800000600x3E739E0E0x000000000x80000100 0x2E726B070x240001020x800000900x3E739E10 loading Cypress Semiconductor 10052016