However, this error may appear with any version of the update but mostly it appears when you upgrade Windows 10 from version 1709 to version 1803. After finishing the upgrade, it will see you a list of updates and when you go for update, you will eventually end with Update Error 0X8007042b. However, this problem is not tied with all the users and only a few users reported about this error. Here, in this article, I will list out some tested methods to resolve this problem.
Method 1: Fix using Advanced System Repair Tool
The most of the common reason behind windows update failed is corrupted or damaged system files like DLL files, EXE files, sys files etc. There are thousands of tiny system files are there that work specific task. If one of the files gets replaced, deleted or damaged then you may get the windows update error 0X8007042b.
Download and Install Advanced System Repair Tool and scan your PC. It has the large database with 25 million files. It will find all the damaged or deleted system files and reinstall them with the fresh one. After, optimizing with Advanced System Repair Tool, try to install windows update again.
Method 2: Reset Windows Update
This is the first-aid method that should be used first if any error occurs during Windows Update. Resetting Windows Update means resetting all the configurations and settings to factory setting and allows you to download a fresh copy of update file from Microsoft server. Here, is the steps for resetting Windows Updates.
net stop wuauserv
net stop cryptSvc
net stop bits
net stop msiserver
Ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
Ren C:\Windows\System32\catroot2 Catroot2.old
net start wuauserv
net start cryptSvc
net start bits
net start msiserver
Method 2: Rename CBS.Log
Open Run command by pressing Windows Key + R and then type the following command and press OK.
Now Rename CBS.Log to something else, and start updating windows again. If the system doesn’t allow you to rename CBS.Log file, then do the following steps:
Step 1: Open Windows Services. Type services in Run Dialog box and press OK.
Step 2: Find Windows Modules Installer Services and double click on it and set the startup type to manual.
Step 3: Reboot your PC and after that try to rename CBS.Log file. Don’t forget to change the startup type to automatic after renaming the file.
Method 3: Temporarily disable antivirus and firewall
This is also helpful to disable antivirus and firewall temporarily. These third-party application follows strict rules and blocks any incoming or outgoing connection that seems to something different. It also denies installing some updates and raises the 0X8007042b error.
Method 4: Run Windows Update Troubleshooter
Windows update troubleshooter is an inbuilt tool in Windows 10 that allows you to fix any update related issues. This is one of the most useful tools in Windows 10 in Windows Updates Problems. Here, is how to use Windows Update Troubleshooter in Windows 10.
3. It will launch Windows Update Troubleshooting wizard. Follow the on screen instruction and click next. When the process complete, try to install update once again. Most probably you will not get the 0x800706be error.
Method 5: Fix Windows File Corruption
If any relevant windows file is missing, deleted, corrupted or damaged, then probably you will get several different types of error messages in Windows 10. However, you can easily fix any Windows File corruption issues using the system file checker tool.
1. Open command prompt as administrator
2. type sfc /scannow and press enter.
3. wait until process finished.