It depends on where you are in the TurboTax program, but you might try clearing your browser's cache and deleting your cookies, then try picking up where you left off.
See the TurboTax Help articles How to clear your cache and How do I delete cookies? for guidance.
If this doesn't help, see the TurboTax Help articles Why am I stuck in a loop in the File section of my return? and State install/e-file update loop: State not installed after installation or TurboTax needs to update prior to e-file for guidance.
If this doesn't help, feel free to post back with more information.