In docs/reference/content/driver-async/tutorials/authentication.md:

The `GSSAPI` authentication mechanism is supported only in the following environments:
 
* Linux: Java 6 and above
* Windows: Java 7 and above with [SSPI](https://msdn.microsoft.com/en-us/library/windows/desktop/aa380493) 

The reference to SSPI should be removed, as the Oracle JDK does not use SSPI for its GSSAPI implementation.

The documentation should be made consistent with the sync version in docs/reference/content/driver/tutorials/authentication.md, which doesn't include that (or any other caveat for that matter).