MATLAB 2017a \b, 2016a\b, open function help document need to login MathWorks account and need to bind the product

We matlab 2017a \b, 2016a\b and other high versions, when opening some function help document, in the Help browser interface will be prompted to sign in to the MathWorks account: "To access this documentation, you must be associated with a license or trial. to view the documentation, log in to your MathWorks account. "

After logging into the MathWorks account, and need to bind the product license number, as shown below:

Workaround:

1. Click the Help Browser Settings button:

2. Select the document location to install locally