If you are using the TurboTax online editions, close the TurboTax window.
Clear cache and cookies on your web browser - https://ttlc.intuit.com/community/troubleshooting/help/how-to-clear-your-cache/01/26135
Sign back onto the TurboTax online account - https://myturbotax.intuit.com/
If the problem persists, change your web browser
If you are using the TurboTax desktop CD/Download editions, update your software.
For TurboTax Windows, click on Online and Check for Updates.
Current Version Windows 020.000.1694. Click on Help>About TurboTax>Version