If you have set up your security questions, you should be able to reset your password with an option listed online here, selecting the option highlighted "Reset Password" button:
You can also unlock your account at the above link as well, using the option next to "Reset Password."
You can also get those options, worded differently, when attempting to access MyTCC on the typical login screen. To unlock your account, the login screen for MyTCC (or authentication screen) will give an option at the bottom of the text fields:
You may need your mobile phone to complete the process, as a code may be sent to you via text or email.
If that option is not available, you can call TCC's Student Support Center at 918-595-2000 for help. Please see this webpage link for more information on your MyTCC login.
For more information about how to contact Student Support Center, see the webpage link.
Forgotten your T-number? See the FAQ link below.