The method is as follows:
1. Click "Start"-"All Programs"-"Attachment", right-click "Command Prompt" and select "Run as Administrator".
2. Copy and enter the following code at the command prompt that appears, press ENTER
forfiles/p%windir%servicingpackages/m microsoft-windows-internetexplorer-*9.*.mum/c "cmd/c Echo Uninstalling Package @fname && start/w pkgmgr/up: @fname/norestart "
3. Then the uninstall will begin, and there will be several error messages that we don't have to pay attention to, press OK.
4. The last command to restart the computer after the shutdown, ie browser to restore the version of the IE8.