The correctness and validity of the client credentials used by the connected app A common area to focus on when troubleshooting Connected App authentication issues is the correctness and validity of the client credentials (client ID and secret). Incorrect or expired credentials can prevent the connected app from authenticating with Tableau Server, leading to access issues. Ensuring that these credentials are correct and up-to-date is crucial for resolving authentication problems. Option A is incorrect because while internet connectivity is important, it is not typically the primary cause of authentication issues. Option C is incorrect as version compatibility, although important, is less likely to be the direct cause of authentication problems.
Option D is incorrect be-cause the frequency of data synchronization is generally not related to authentication issues with connected apps.