Symptoms
Signing into the Event Streams UI fails with the message 403 Not authorized, indicating that the user does not have permission to access the Event Streams instance.
Causes
To access the Event Streams UI, the user must either have the Cluster Administrator role or the Administrator role and be in a team with a namespace resource added for the namespace containing the Event Streams instance. If neither of these applies, the error will be displayed.
Resolving the problem
Assign access to users with an Administrator role by ensuring they are in a team with access to the correct namespace.