If not, use the TCP Optimizer "File" menu and reset both TCP/IP and Winsock.
Are you sure the current settings are different than the default?
What is different?
Note that depending on your OS/variant some of the default and current settings may be the same. TCP Optimizer may be trying to apply the "defaults" for a different version of the OS than yours, but, resetting TCP/IP and Winsock should always bring your network to the default state.
You can manually change each setting through PowerShell that you don't like, using the PowerShell commands listed in this article: https://www.speedguide.net/articles/win ... weaks-5077
Ultimately, if you reset Winsock and TCP/IP, there is no way for TCP Optimizer-applied settings to remain in the system.