What message indicates an outdated version of Dynatrace OneAgent?

The message indicating an outdated version of Dynatrace OneAgent is represented by warning symbols beside hosts. This visual cue serves as an alert to users that certain hosts are not running the latest version of the OneAgent, which is critical for ensuring optimal performance, reliability, and security. These warning symbols specifically draw attention to discrepancies in versioning and prompt administrators to take necessary action to update the agents.

Meanwhile, the other options do not explicitly indicate that an update is needed. The presence of an update required message on a dashboard could indicate general maintenance or updates needed across various components, but it doesn’t specifically point to OneAgent. 'No updates available' would suggest that all systems are current, and 'Hosts are up to date' clearly states that no action is needed, further confirming that no updates are required. Thus, the warning symbols effectively communicate the need for immediate attention and updates for outdated OneAgents.