Why did I get error 0x80000077?

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 0x80000077?

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
1111 0x80000076 Router 1164 Link Network Number 155187241 0x80000078 Checksum Exam Guide 0x80000074 2222 Routing CCNA Summary Switching 3333 Review 1152 1119 WADummy define 17216104 1010110 1010400 0x00d00b State info Area Length 17216048 Advertising States Binary Decimal 2147483767 200101 100101 0x80000070 0x7A05 Solutions Cisco 0x8000002d 0x8000002b 0x80000075 1551872400 Protocols WAInnerWidth 0x13 intuitionintuitionh 1122 TrinityCoreBattlenetRpcErrorCodesh GitHub ERRORUTILSERVERUNABLETOGENERATEREALMLISTTICKET master TrinityCore 0x14 IncludeXREF Amiga 0xAEB7 1551872440 Developer WAInnerHeight Conversion Docs 1101 Exams 0x8000009f 0x6ee1 4444 2552552550 0x80000094 0x63df Mask 0xf378 exampleospfdboundary ASBR 0xf717 Type 1723055 Specialist SelfStudy AlcatelLucent CPAN Dotted Hexadecimal 0x0014b0 23000 Study 200105 10000000000000000000000001110111 ICND2 Options 0xaca7 0xb26e 1414 0x80000005 100105 0x0021a5 Complete 1721950