Why did I get error 0x80040084?

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 0x80040084?

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 0x00000000 IOWARNINGWRITEFUAPROBLEM Device value Invalid data IOFILESYSTEMTXFRECOVERYFAILURE NTSTATUS0x40040085 0x80040098 0x80040090 0x80040094 GitHub NTSTATUS0xC0040083 IOFILESYSTEMREPAIRFAILED NTSTATUS0x80040084 mingww64 IOCDROMEXCLUSIVELOCK option Cache ensure occur corruption disabled Manager processing correctly ntiologch requests write some Communities 0x00054d01 Latest Support Panic Official Apple 23072011 state sv0x24FE4000 PC0x00000000 Exception crash card info Kernel SetColor0x800400802mycolor 0x800400a8 0x800400a4 SetColor0x800400801mycolor SetColor0x8004007c2mycolor SetColor0x8004007e1mycolor SetColor0x8004007e2mycolor 0x800400a0 SetColor0x800400822mycolor SetColor0x800400841mycolor SetColor0x800400842mycolor SetColor0x800400821mycolor 0x00000010 0x11010108 0x80040088 MSR0x40009030 Fresh Open 0x00000001 Fossies address 0x80E4018C 0x800400ac Source 400500 series lockup Nvidia Software Archive NTSTATUS0x80040082 club XCP0x00000010 0x400 based R10x121ABD10 DAR0xE015F000 DSISR0x40000000 LR0x00000000 Inst terminated unaligned frame Have Fermi access Backtrace 0x8004008E 0x8004008D 0x80040091 0x8004008F 0x80040081 0x80040076 0x8004008C 0x8004008B 0x8004009B 0x80040099 mingww64ntiologch 0x8004009C 0x80040093 0x80040092 0x80040097 0x80040095 Interface COMOLE FACILITYITF management hresult Error means symbol 0x80040039 0x80040038 0x8004003B 0x8004003A win32 designated 0x80040036 ErrorCode frequency 0x80040086 0x80040087 AUDIOOUTENOAUDIODATA AUDIOOUTEINVALIDPAN volume AUDIOOUTEINVALIDFREQUENCY 0x80040085 main static SetColor0x0000c5de1mycolor mycolor0x8080FF amingww64headersincludentiologch feed NTSTATUS0x80040086 bmingww64headers down goes development Contribute msys2contribmingww64 master when mirror Pudncom Read AUDIOOUTEINVALIDVOLUME 10062008 account creating apperrorh MainProfile20080610rar