Windows Update Error 0x800703e3
To fix Windows Update Error 0x800703e3, follow the below suggestions: Let us now see them in detail but before that make sure to create a restore point first.
1] Run Windows Update Troubleshooter
Run the Windows Update Troubleshooter and follow the on-screen instructions. The troubleshooter will run and attempt to identify if any problems exist which prevent your computer from downloading and installing Windows Updates. It will clear the Windows Update related temporary files, clear the contents of the SoftwareDistribution folder, check the status of Windows Update-related Services, repair and reset Windows Update components, check for pending updates, and more. See if this has helped. If it has not, the reset the components manually and see.
2] Reset Windows Update Components manually
At times you may encounter such a problem due to having some kind of corruption in system files. So, if you are still facing the issue after installing the Windows updates manually, reset the Windows Components by following the below instructions: To get it started, open an elevated command prompt first. Now type in the following commands and press enter after entering each command to stop running the Windows Update and other relevant services. Now remove all the qmgr*.dat files from your device. To do so, type the below text code in the command prompt and press the Enter key to run it. At this time, the system may ask for your confirmation, type Y to confirm it. Next, you need to rename the SoftwareDistribution and catroot2 folders. So, type the following command in the command prompt window and hit enter after typing the below command. To reset the BITS service and the Windows Update service to its default security descriptor, type the below commands in the elevated command prompt window. Also, hit enter after each command to execute them: After that, execute the below command to move to the System32 directory: At this point, you have to re-register the BITS (Background Intelligent Transfer Services) files and the Windows Update related DLL files. To do so, type the below commands one by one and hit enter after each command: Once you successfully re-register the BITS files and Windows Update related DLL file, you need to reset the network configurations. So, type in the below command-line and hit enter after each one. Now restart the stopped services like Background Intelligent Transfer Service, Windows Update, and Cryptographic services. So type in the below text code in the command prompt window and press enter after each command. Here Exit command will close the window automatically after running the other commands. Once you complete the above procedure properly, reboot your computer to save the changes you made. In case you are still facing the same error code even after resetting the Windows components, move down to the next method below. TIP: You could also use the Reset Windows Update Components Tool.
3] Install Windows update manually
Sometimes this type of error code occurs due to a temporary problem with the Windows Update servers. To avoid such an issue, check if there is any update that gets failed to download. Follow the below instructions to download and install the updates manually. First of all, open Windows Settings using Win+I keyboard shortcut. Then select Update & Security > Windows Updates. Now move to the right pane and click View update history. The next page shows you a list of updates successfully installed on your PC while some of them might be failed to install. Note down the KB number mentioned of the Windows update that is failed recently and then navigate to the Microsoft Update Catalog page. On the next screen, type the KB number in the search box and then press enter to search the result. From the search result list, download the appropriate version of your Windows. Once downloaded, double-click on the downloaded updates and then install it. Now restart your computer and check if this method helps you to fix the problem. I hope you were able to fix the Windows Update Error.
