[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 an 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

All the possible errors that can cause KB4013429 to fail to install are listed below. You can find your issue and solve it with the proper methods. 

1. 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. '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. 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

Download EaseUS free partition manager software. And follow the tutorial we provide here to learn how to extend system partition without losing data and fix insufficient disk space to install KB4013429 update.

Step 1: Launch EaseUS Partition Master

Step 2: Add space to the System C drive

1. Shrink partition and leave unallocated space for extending C: drive:

1. Right-click on a partition next to the C: drive and select "Resize/Move".
2. Drag either end of the partition to shrink and leave unallocated space behind the system C: drive and click "OK".

2. Right-click on the System C: drive and select "Resize/Move".

To add space to the C: drive, drag the system partition end into unallocated space.

Step 3: Confirm to extend system C drive

Click the "Execute Operation" button, check all the operations waiting for pending, and click "Apply" to keep all changes so to extend C drive.

4. Damaged or Missing Installation Files, with Error Code 0x80073712

fix it by forcing the second download

1) Use the 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. 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. The 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.