If you notice the update error “0x800700a1” in the Windows 11 update window. In that case, a particular Windows update for Windows 11 couldn’t be downloaded.
Fortunately, there is a fix for error 0x800700a1 in Windows 11. The 0x800700a1 error code often has different causes, however, most likely it is a download error similar to Windows update error 0x8007000d.
Therefore, the exact cause can only be solved by going through the steps below.
In this article, you’ll read how to resolve error 0x800700a1 on a Windows 11 PC. Also, I describe how to install an update manually.
How to fix Windows update error code 0x800700a1
Windows update troubleshooter
In Windows, there are several tools available to solve problems. These are problem solvers. To resolve error code 0x800700a1, you can run the Windows update troubleshooter to automatically fix this error message.
Right-click on the Start button. Click on Settings from the menu. Then click on System on the left and navigate troubleshoot at the bottom.
Then click on other troubleshooters, and to the right of “Windows update” click on the Run button to launch the Windows update troubleshooter.
Problems are being identified with Windows update. However, this may take a while.
If the Windows update has problems, the issues will be fixed automatically. If you want more information about the troubleshooting, click on the “View Detailed Information” link.
To exit click on the Close button. Now check for Windows updates again.
Perform an SFC and DISM scan to resolve error code 0x800700a1
If you get an error message in Windows update with code 0x800700a1, some Windows components or system files may be damaged. To rule out that damaged files are the problem for error code 0x800700a1, you can run SFC and DISM.
SFC and DISM are recovery process files that can repair Windows components automatically. In this way, error code 0x800700a1 can be fixed.
Right-click on the Start button. Click Windows Terminal (administrator) in the menu.
In the Terminal window, to begin, type the following command:
Should SFC have found and repaired problems, you will find the log file in the location: C:\Windows\Logs\CBS\CBS.log
Once SFC has completed, type the following command immediately after to run DISM:
DISM /online /cleanup-image /restorehealth
Running these Windows recovery commands takes some time. Therefore, do not interrupt these processes.
Start Windows installer service
All downloaded and installed updates in Windows use the Windows installer service.
Windows Installer is an installation and configuration service that comes with Windows. The Installer service enables customers to provide better deployment and a standard component management format. Starting this “Installer” service can resolve error code 0x800700a1.
Right-click on the Start button. Click on Run from the menu. In the run window type: services.msc.
Search for the “Windows installer” service and right-click on it. Then, in the menu, click Start.
Reset the Windows update service
Sometimes there are problems with Windows update that can’t be fixed overnight. Restoring the update service to default values (“a reset”) may solve the problem. If nothing works anymore, then this is often the solution.
Install update manually
Suppose a particular update cannot be installed because error code 0x800700a1 is displayed. In that case, you can still install the update in question manually.
The advantage of manual installation is that the Windows update service is spared. If you have problems with Windows update, install the update manually.
First, you need to determine what the last update is. To do this, go to the Microsoft update history website. Then, search for the latest update at the top left under “Update History”.
Note down the KB number and search for the number in the Microsoft update catalog. Then download the update for your appropriate computer architecture and install the update.
I hope to have helped you with this guide. Thank you for reading!