WIN7 Update Failure Ultimate Solution

Install Internet Explorer 11 today, prompt for related updates, try n multiple methods always show update failed, unable to install IE11.

Error that prompts you to find:

Code 80071a91 Windows Update encounters an unknown error

Code 80070643 Windows Update encountered an unknown error.

Ultimate Solution:

1. Start menu-All Programs-Accessories

2. Right-click "Command Prompt" and select "Run as Administrator"

3. Enter the following command and return to the prompt operation after the successful completion of the system update on it.

fsutil resource Setautoreset true C:

The "C:" In the previous code refers to the disk on which the system is located, and if Windows7 is installed on another disk, the corresponding letter is changed.