[Fixed] Cumulative Update KB4013429 Failed to Install with Error

"Cumulative update for Windows 10 version 1607 for x64-based system (KB4013429 ) - failed 0x800f0900."

"Cumulative update for Windows 10 version 1607 for x64-based systems (KB4013429 ) - error 0x80070002."

One user posted his KB4013429 problem on Microsoft Community and asked how to fix Windows 10 KB4013429 failed to install with error. Later he was followed by many other users, who were caught in the same KB4013429 failing to install trouble, but the error messages vary. Hence, we're compiling a list of common errors happened to KB4013429for Windows 10 Anniversary Update, plus the relevant troubleshooting methods.

Errors & Fixes for KB4013429 Failed to Install

1. If KB4013429 failed to install with blue screen error

Please try to fix it by using the Recovery Console

1) Restart your PC. When you get to the sign-in screen, hold the Shift key down while you select Power -> Restart.
2) After your PC restarts to the Choose an option screen, select Troubleshoot -> Advanced Options -> Go back to the previous build.

2. If KB4013429 failed to install with 'We couldn't complete the updates. Undoing changes' stuck error

Please fix it by performing Automatic Repair

1) Press Shift and click Restart to boot you into the Advanced startup options screen.
2) Open Settings -> Update & Security -> Recovery -> Advanced startup -> Restart now.
3) Type shutdown /r /o in an elevated CMD prompt to reboot your computer into Advanced Boot options.
4) Boot into Windows 10 with your Installation Media or Recovery Drive. Select Repair your computer and the Advanced startup options will appear.
5) Run Command Prompt as administrator. In the CMD box that appears on the computer screen, enter the following strings of text, one at a time, and hit Enter.

net stop wuauserv
net stop bits

6) Now browse to the C:\Windows\SoftwareDistribution folder and delete all the files and folders inside.

3. If KB4013429 failed to install with not enough free space for update files, with error codes 0x80070070 – 0x50011, 0x80070070 – 0x50012 and 0x80070070 – 0x60000

fix it by creating extra free storage with EaseUS Partition Master

1) Download EaseUS free partition manager software.
2) Right-click on your system partition (i.e. C drive), and choose "Resize/move partition" feature.
3) click the tutorial we provide here to learn how to extend system partition without losing data and fix insufficient disk space to install KB4013429 update.

4. If KB4013429 failed to install with damaged or missing installation files, with error code 0x80073712

fix it by forcing the second download

1) Use Disk Cleanup tool to delete the 'Windows Setup temporary files'.
2) Open Settings on your PC.
3) Click on Update & security.
4) Click on Windows Update.
5) Click the Check for updates button to force the download again.

5. If KB4013429 failed to install with other specific error codes we don't mention before (such as 0x80240fff, c1900, 0x8000fff, 0x80072ee2, 0x80072ee7, 0x800f0922, etc.

Try to find the fixing methods from Microsoft support page - get help with Windows 10 upgrade and installation errors.

6. If KB4013429 download gets stuck at 'Preparing To Configure Windows. Please Do Not Turn Off Your Computer.' error

fix it by restoring a previous version of Windows

1) Boot into Safe Mode. 
2) Click Start -> Accessories -> System Restore. Click Next.
3) Pick an earlier restore point and then click Next.
4) Click next and follow the prompts and it will start a system restore.
5) Wait till your computer does this System Restore process.