I entered my activation number and an error code 603 appeared. What will I do

Please clean your cache and restart your computer. An image has been included below for guidance.
 

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I cannot find the cache. Where do I go to find it

Please make sure you entered your activation code as indicated with the dashes.

In Chrome

1. On your computer, open Chrome.
2. At the top right click on the three dots which will open a menu.
3. Click More tools. Clear browsing data.
4. At the top, choose a time range. To delete everything, select All time.
5. Next to "Cookies and other site data" and "Cached images and files," check the boxes.
6. Click Clear data.

Thank you for choosing TurboTax.