Why did I get error 0x8004049C?

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 0x8004049C?

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
Configuration System occurred 0x800404A0">0x8004049F 0x8004049E 0x800404A0-specified">0x8004049D file WebDAV 0x80004001 specified found Setvi1500001 nisyscfglvlibInstall transfer UpdateTargetPagevi 0x800404A0 0x800404a8 addi cmpwi moveal 3C60801B r332741 800301C0 40820060 8004044C Reserved 80040460 r3r331392 80040458 r0440r3 80040454 880301B8 80040450 41820040 38637AA0 2C000000 8004045C bles 0x800404c8 0x800404a4 0x80018410a2 tstl 0x800cc760 lsll 0x800d12f0a0 0x800404ae movel d2d3 0x800404a6 address space host 0xf7000000 bytes guest 0x80040494 clrl 0x80040496 0x80040490 moveml d2d3a2sp 0x800404A2 Problem C12ServiceResponseSGERR C12ServiceResponseSGNP 0x800404A1 LabVIEW 21102014 Centrum myRIO Polskie C12ServiceResponseRSTL MErrorEnum Class Interface C12Adapter Opensource C12ServiceResponseNETR C12ServiceResponseRQTL C12ServiceResponseNETT Reference C12ServiceResponseUAT Error r632768 800040E4 3CC08000 FTPWebDAV 800040E0 2C030000 80040448 80040444 38C600F4 r6r6244 directory Complete call reasons 2147220324 Possible operation timed This chain TargetInstallSWvi