Why did I get error 0x800402A7?

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 0x800402A7?

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
CDBurnerXP HRESULT from StarBurn could Exception 0x800402A5-0x800402A7">0x800402A6 engine burning file data Windows10 unter Make installed sure Safety will work properly write 0x800402A5 Software setup specified Invalid necessary reinstall using 0x800402A4 details gefunden Mglichkeit eine Laufen auch Langzeitarchivierung COMException BurnMasterLibCGBurnMasterClassInitializeBurnMaster Ausnahme schon jemand CDRecNGBurnMasterWrapperinitializeBurnMaster start initialized error name EROOMEINVALIDSTARTDATE disabled preview EROOMEINVALIDSTARTTIME date Instant type EROOMEINSTANTMESSAGINGDISABLED Messaging facility excluded EEDMFILEDELETED open already kostenlos Freecell 0x8004026D 0x80040281 19082013 Appendix EROOMEINVALIDFACILITYNAME EEDMFILEALREADYOPEN spielen online 0x800402b9 0x800402ba 0x800402bb 0x800402b8 0x800402b5 0x800402b6 0x800402b7 0x800402bc regular package instead version Techyvcom 23022014 portable 0x800402b4 0x800402a9 0x800402aa 0x800402ab 0x800402a8 Search Words List 0x800402ac 0x800402b1 0x800402b2 0x800402b3 0x800402b0 0x800402ad 0x800402ae 0x800402af STARBURNERRDVD FAILED STARBURNERRUNRECOVERABLEBADBLOCK STARBURNERRDVDAUTHORIZEFAILED initialised codes STARBURNERRNOTIMPLEMENTED deploying following FUNCTION after STARBURNERRTRANSPORTNOTSUPPORTED image 25032011 bekommen CDBXP doesnt Praxisarchiv VonDoczuDocde Thema anzeigen tried message saying Bugs while another CDDVD Void EZNCDATAWRITESAFECHECKERR consistency EdmResultErrorCodese password 0x8004029A range EZNCDATAWRITESAFENOPASSWD unique EEDMEXCLUDEDFROMPREVIEW 0x8004023C variable SolidWorks Help EEDMERPMGRVARIABLENAMENOTUNIQUE anything wrong side SystemRuntimeInteropServicesCOMException InitializeExSystemString RocketDivisionStarBurnXSTARBURNTRANSPORT ErrorDescriptionForBug 0x800402A3 destination EZNCDATAWRITEVALUE EZNCDATAWRITENODATA MITSUBISHI Communication FCSB1224W000