[Solved] Windows 10 Update Failed to Install Cumulative Update

Problem: Windows 10 Update errors commonly seen error codes: 0x80073712, 0x800705B4, 0x80004005, 0x8024402F, 0x80070002, 0x80070643, 0x80070003, 0x8024200B, 0x80070422, 0x80070020 when trying to install the Cumulative Update.

Content Summary

Solution 1: Configure Windows Services to Start up Automatically
Solution 2: Use the Windows Update Troubleshooter
Solution 3: Download the most recent Servicing Stack Update (SSU)
Solution 4: Download the most recent KB
Solution 5: Install the Problematic Update Manually
Solution 6: Fix Windows file corruption
Solution 7: Reset Windows Update History and Files
Solution 8: Perform an in-place upgrade using Windows 10 Media Creation Tool
Reference

Solution 1: Configure Windows Services (Cryptographic Service, Background Intelligent Transfer Service, Trusted Installer Service and Windows Update Service) to Start up Automatically

Step 1: Open cmd.exe with Run as administrator option

Step 2: Type the following command:
SC config wuauserv start= auto
SC config bits start= auto
SC config cryptsvc start= auto
SC config trustedinstaller start= auto

Step 3: Restart computer.

Solution 2: Use the Windows Update Troubleshooter

Step 1: Go to Settings > Update & Security > Troubleshoot tab

Step 2: Click on Windows Update option and follow the instructions on screen after the Windows Update troubleshooter opens.

Step 3: Navigate to Troubleshoot section again and open Internet Connections troubleshooter.

Step 4: Restart computer and perform Windows 10 Update again.

Alternatively, you can download Windows Update Troubleshooter for Windows 10, Windows 7 and Windows 8.

Solution 3: Download the most recent Servicing Stack Update (SSU)

Step 1: Go to Start > Settings > System > About > Scroll down to System type.

Step 2: Download the version of the latest SSU that matches your version of Windows from the Microsoft Update Catalog.

Step 3: Restart your device and check for updates.

Solution 4: Download the most recent KB

Step 1: Go to Update history page.

Step 2: Find the most recent update KB for the version of Windows 10 you have – it’s usually at the top of the list – and either write the KB number down or copy it.

Step 3: Go to Microsoft Update site and search for the KB number.

Step 4: Select the link for the download, and then choose Download. Select Save if you are prompted.

Step 5: When the download completes, select Open to start the update.

Solution 5: Install the Problematic Update Manually

Step 1: Visit Windows 10 update history page to find out which is the latest released update for Windows 10.

Step 2: Copy the KB (Knowledge Base) number next to the latest released update for Windows 10.

Step 3: Open Microsoft Update Catalog and search the Knowledge Base number you copied.

Step 4: Click on Download button to the left and choose the correct architecture of your PC (32bit or 64bit).

Step 5: Run the file you downloaded.

Step 6: Restart computer.

Solution 6: Fix Windows file corruption

Step 1: Open cmd.exe with Run as administrator option

Step 2: Type the following command:
DISM.exe /Online /Cleanup-image /Restorehealth
sfc /scannow

Step 3: Close the command prompt, and then run Windows Update again.

Solution 7: Reset Windows Update History and Files

Step 1: Open cmd.exe with Run as administrator option

Step 2: Type the following command:
net stop bits
net stop wuauserv
net stop appidsvc
net stop cryptsvc

Step 3: Open Windows Explorer and navigate to C:\Windows\SoftwareDistribution folder, right-click and choose Rename option. Change its name to SoftwareDistribution.old and apply the changes.

Step 4: Open cmd.exe with Run as administrator option

Step 5: Type the following command:
net start bits
net start wuauserv
net start appidsvc
net start cryptsvc

Solution 8: Perform an in-place upgrade using Windows 10 Media Creation Tool

Step 1: Download Windows 10 Media Creation Tool from Microsoft’s website.

Step 2: Double-click to execute MediaCreationTool.exe.

Step 3: Select Upgrade this PC now option and click on the Next button to proceed.

Step 4: Windows 10 Media Creation Tool will download certain files, check for updates, and scan PC.

Step 5: Accept the license terms from the next window to proceed.

Step 6: Proceed with Install Windows and Keep personal files and apps option.

Reference

Microsoft Windows Support: Fix Windows Update issues
Repair Windows: Windows 10 KB4074588 Update Fails to Install 0x80070BC2 (Solved)
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Microsoft Answer Community: Getting error 0x80070BC2 doing Cumulative Update for Windows 10 Version 1709 for x64-based Systems (KB4056892)
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