What if the IE browser security level cannot be modified?

When you modify the IE security level, you will often be prompted: The recommended security level for this domain is "Security Level - High". The level you choose is lower. Please select the "Security Level - High" security level or higher.

When we change the security settings of IE below its default settings, the system will prompt "Cannot modify..." error, this is due to SP3 pair User-set lower security levels are limited. However, this may cause us to fail when accessing certain sites. We can modify its default security level as follows:

Click Start--Run, Enter The regedit command opens the registry editor, and then navigates to HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings\\Zones\\3. On the right side of the window, change the MinLevel to 10000 (hexadecimal) so that you can set it. A lower level of security.