Win7 update failed the ultimate solution

Install Internet Explorer 11 today, prompting that relevant updates must be made. Trying N multiple methods always shows that the update failed and IE11 cannot be installed.
Tip found error:
Code 80071A91 Windows update encountered an unknown error
Code 80070643 Windows update encountered an unknown error.
The ultimate solution:
1. Start menu - All programs - Attachments
2. Right click on “ Command prompt & rdquo;, select “ Run as administrator & rdquo;
3. Input Press the following command and press Enter. After the operation is successfully completed, the system update can be performed.
fsutil resource setautoreset true c:
In the above code, “c:” refers to the disk where the system is located. If windows7 is installed on another disk, it is changed to the corresponding drive letter.