Issue
When you restart Tableau Server, the following error occurs:Tableau Server not available
Additionally, the below message appears in the pgsql logs:
FATAL: password authentication failed for user "tblwgadmin"
Tableau Server
<install directory>\Program Files\Tableau\Tableau Server\<version>\bin
tabadmin stop
tabadmin regenerate_internal_tokens --passwords
tabadmin config
tabadmin start