Windows update error 800B0100

Error codes from various Windows updates are hard to list, since there are quite a few of them and, often, differ greatly in what causes them and the method to get rid of the error.

This specific error is somewhat obscure and generally occurs on somewhat older versions of Windows, like Windows 7 and Windows XP. The error itself has somewhat complicated methods as its solutions, but several online users confirmed the validity of these methods and we strongly recommend that you follow the entire article and try these methods yourself before giving up.

Solution 1: use Windows Update's built-in troubleshooter

Windows comes prepared when it comes to solving problems related to different aspects of your computer.. The troubleshooters that are pre-installed on your computer are not sure to solve the problem, but they can certainly help you at least figure out what the problem is so you can send it to Microsoft or explain it to someone with more experience.

What's more, if the solution to the problem is obvious, the troubleshooter can suggest a solution or may even try to fix the problem automatically, which is a very good thing, especially for inexperienced users. What's more, there are users who confirmed that this is the only thing they should do to solve the problem.

1. Open the Settings app by clicking the Start button and then the gear icon just above. You can also search for it.

2. Open the Update & Security section and navigate to the Troubleshooting menu.

1. First, click the Windows Update option and follow the instructions on the screen to see if there are any problems with the Windows Update services and processes.

2. Once the troubleshooter finishes, go back to the troubleshooting section and open the internet connections troubleshooter.

3. Check if the problem is solved.

Old versions of Windows:

Since Windows 7 it does not have the configuration application as in previous versions of the Windows operating system, you can download the Fixit troubleshooter by navigating to this link and choosing Windows download 7. Run the file you downloaded and follow the instructions on the screen. Unfortunately, support for this tool has been canceled for older versions of the Windows operating system.

Solution 2: check the log file

The second method on the list is probably one of the longest, but it has been successful with many users who found it in a blog post. However, the method is somewhat lengthy to undertake and requires advanced troubleshooting. However, we will guide you step by step below:

1. Navigate to this link to run the Microsoft Update Preparation Tool.

1. Once the scan is complete, navigate to file C >> Windows >> logs >> CBS >> Checksur.log, open it and look for lines that look like this:

Repair files not available:

service pack Bundle for KB978601 ~ 31bf3856ad364e35 ~ amd64 ~~ 6.0.1.0.mum

Maintenance packages. Package for KB979309… 31bf3856ad364e35… AMD64… 6.0.1.0…
Maintenance packages. Paquete para KB978601… 31bf3856ad364e35… AMD64… 6.0.1.0… CAT…
Maintenance bundle package for KB979309 ~ 31bf3856ad364e35 ~ AMD64 ~ 6.0.1.0.cat (Tixag 14) (Tixag 1)

1. These are the files that are damaged and should be copied to the% systemroot_Windows_Servicing_Packages folder. To do this, you will first have to take ownership of the folder in order to copy and paste things into it.

2. I searched “Symbol of the system”, right click and select option “Execute as an administrator”. Copy and paste the following commands and make sure to hit Enter after each one:

takeown / F c: NWindowsN-PackageService / D y / R

cacls c: NWindowsN-Package Service / E / T / C / G “Username”: F

1. Now you will have to download the missing files which you can locate in the Checksur.log file that you opened earlier. In the sample text we provide, these files would be KB978601 Y KB979309 . Copy the KB number (Knowledge base) along with the letters “KB” also (for example, KB978601 ).

2. Open the Microsoft Update Catalog and search by clicking the search button in the upper right corner.

3. Click the download button on the left and choose your PC architecture (32 O 64 bits). Make sure you know your PC's processor architecture before choosing this option.

1. You will need to repeat the same process for each different KB number in the Checksur.log file. You will also need to unzip the files you have downloaded by typing the following command at the command prompt:

Expanda -F: * Actualizar KBXXXX.msu x: DestinationDirectory

1. The destination directory is chosen by you. After this process, you will see UpdateKBXXXX.cab, which should also be expanded with the following command:

Expand -F: * Update KBXXXX.CAB x: DestinationCABDirectory

1. Inside this cabin you should be able to locate two files: update.mum y update.cat. The same goes for any issue that Checksur.log mentions. You will have to rename the files exactly as in the log file. For example, the update.mum file for the update KB978601 must have a name:

Paquete_para_KB978601 ~ 31bf3856ad364e35 ~ amd64 ~~ 6.0.1.0.mum

1. Repeat the same process for all the files and you will have to put them in an appropriate directory. The directory is also shown in the log file. For example, the full location of the update.mum file for the file KB978601 after renaming it as above, should be:

service pack Bundle for KB978601 ~ 31bf3856ad364e35 ~ amd64 ~~ 6.0.1.0.mum

1. After doing this, restart your computer and see if your problem is resolved.

Solution 3: run an in-place update

This method will be quite easy for users who have the original CD and DVD key for the operating system they use and this method will only update and replace system files and settings without interfering with their applications and personal data.. You can also upgrade to Windows Vista or Windows 7 Follow the instructions below for more information:

1. Start your computer using the current operating system that you have installed on your PC and insert the new DVD for which you have the key.

2. If Windows can automatically detect the DVD, The Install Now screen will appear and you can immediately click Install Now. However, If that is not the case, you need to click on the start menu icon, to write “Run” and click Enter. Scribe “X: setup.exe” and click OK, where X is the drive letter of the DVD. Click Install Now Either Way.

1. Follow the onscreen instructions until “What type of installation do you want?” Click Update current operating system to “Integrated operating system”.

2. Check if the problem is solved.

Solution 4: restart Windows Update components

This solution helped many users to solve their problem with Windows 10 Update, so it is recommended that you review it. This method can be somewhat advanced for occasional users, but if you follow the instructions carefully, can fix the problem in no time.

Since you are going to edit the registry, We recommend that you read this article to back up your registry and avoid problems later.

Later, you can follow the steps in the Solution 2 0x800706b5 to reset Windows Update components.