Fix error 0x800703e6, installation upgrade failed
0x800703e6, the installation upgrade failed. It is a Windows Update issue that prevents users from installing the available cumulative update. Affected users see the following message in the Windows Update section when they try to install the available cumulative update on their systems:
There were problems installing some updates, but we will try again later.
Cumulative Update for Windows for x64-based Systems (KB4528760) - 0x800703e6 Error
Sometimes antivirus software prevents Windows from installing updates. This is usually a false positive sign and therefore avoidable. We recommend that you update your computer after temporarily disabling Microsoft Defender Antivirus or third-party antivirus software and see if it helps you. Don't forget to re-enable your antivirus.
Fix error 0x800703e6, installation upgrade failed
The following solutions can help you fix this update error:
Run the Windows Update troubleshooter, run SFC and DISM by clearing the reset components of Windows Update, remove WUServer and WStatusServer from the registry, run disk cleanup, install Windows Update from Microsoft Update Catalog, run an internal upgrade.
Let's check out these fixes in detail.
- 1] Run the Windows Update troubleshooter
The Windows Update troubleshooter is an automated tool that helps users fix various problems or errors related to Windows Update. This can also work for this error. So run the Windows Update troubleshooter and see if it helps.
- 2] Run SFC and DISM checks
You may also encounter Windows Update errors due to corrupt system files. Therefore, running an SFC scan (or system file checker tool) may help you solve the problem. It repairs corrupted or missing system files and then you may be able to update your Windows operating system.
Also, try running a DISM scan and see if it works. You use the DISM (or image publishing and management service) tool developed by Microsoft to fix WIM files. The WIM (Windows Imaging Format) file manages drivers, Windows Update components, etc. Corruption in this file can affect Windows Update.
- 3] Reset Windows Update components
One possible reason for receiving Windows Update errors is corruption of the update components. Therefore, restoring Windows Update components to their default values can help you solve Windows Update problems.
- 4] Remove WUServer and WStatusServer from the registry
If you still receive the Windows Update 0x800703e6 error, despite trying the above fixes, removing WUServer and WStatusServer entries from the Windows registry may help. The following guidelines will help you with this:
Type regedit in the Windows search box and press Enter. It will open the Registry Editor window. In Registry Editor, go to the following path: HKEY_LOCAL_MACHINE \ SOFTWARE \ Policies \ Microsoft \ Windows \ WindowsUpdate
Now check if the WUServer and WStatusServer entries are available in the right section. If so, delete them and restart your computer.
- 5] Run Disk Cleanup
Windows Update errors can also occur if you run out of disk space on your system. Therefore, we recommend freeing up some disk space and then updating your system. You can run the Disk Cleanup utility to remove junk or temporary files, previous Windows installation files, and more from your system to get plenty of disk space.
- 6] Install Windows Update from the Microsoft Update Catalog
You can also manually download and install Windows Update from the Microsoft Update catalog. Find the update named Update on this website and download the update file.
- 7] Perform an internal upgrade
If none of the above solves your issue, performing an in-place upgrade may help. An internal upgrade helps upgrade your system to the next feature update. A good internet connection is required for an internal upgrade.
While the internal upgrade will not delete your data, it is best to back up all your data before proceeding.
How do I install an update that failed to install?
If Windows Update fails for some reason, you can try some solutions such as running an SFC scan to repair corrupt system files, using the Windows Update troubleshooter that can provide various solutions related to Windows Update, manually downloading and installing the update, etc.
Why can't some updates be installed?
There can be many reasons for Windows Update failure such as insufficient disk space, missing system image files, corrupt Windows Update components, etc., and apart from that, Windows updates also fail if your internet connection is unstable. So, you need to know the problem or issues caused by the update on your computer and then fix this issue.
I hope this is helpful.