Checking and adjusting the security permissions of the Tableau Server installation directory When encountering a permissions error during the installation of Tableau Server on Windows, the first action should be to check and adjust the security permissions of the installation directory. Ensuring that the installer has the necessary permissions to write to the directory is crucial for a successful installation. Option A is incorrect because disabling UAC is not a recommended practice and does not specifically address permission issues with the Tableau Server installation di-rectory. Option C is incorrect as granting administrator privileges to all users is excessive and poses a security risk. Option D is incorrect because reinstalling the operating system is an unnecessary and extreme measure for resolving a permissions issue.