Release Notes: June 2025

2025-06-03

Chromium Upgrade for BrowserBot

We have started upgrading the Chromium browser for our browser-based tests to Chromium 132 (default) and Chromium 135 (newer).

For more information on why Chromium upgrades are needed, see Why Chromium Upgrades.

The following known browser behavior discrepancies have been identified in Chromium 132:

• waitForTextToBePresent: This function is known to be flakey in Chromium 132. If you are running into this issue, we recommend defining your own custom function.

• Stricter certificate validation: Previously, certificate issues could be optionally ignored. In Chromium 132, certificates must be valid.

Endpoint Agent Client Version 2.9.0

The following enhancements have been made to the Endpoint Agent client:

All Platforms

• Timing offsets are now used in dynamic network tests to reduce the risk of traffic spikes at targets.

• Previously, user agent registrations would fail for agents registered with external metadata. This issue is now fixed.

• Previously, the agent did not correctly handle the bypass list entries in the proxy configuration when the list contained more than one element. This issue has now been resolved, and the endpoint agent can now handle a bypass list with multiple entries.

• The diagnostic bundle now includes the information related to Cisco Secure Client configuration.

Windows

• The Endpoint Agent now bundles and supports NPCAP 1.79 for its Extended Network Test Support functionality.

macOS

• WebSocket connections to the ThousandEyes system have been enhanced to align with the system's proxy configuration, improving overall connectivity and performance.

2025-06-10

Announcing the AI Assistant Limited Preview

ThousandEyes is excited to announce that the AI Assistant limited preview is now available. This release is designed to enhance user troubleshooting and provide context with AI-driven insights. Key features of the preview include:

Troubleshooting Application Experience

The assistant can help troubleshoot the performance and experience of specific applications by using events, alerts, and Internet Insights outage data (if purchased). It provides clear summaries of the issue type, start time, duration (if applicable), and the number of affected agents and tests in your account group. This will help you quickly pinpoint and better understand the root cause of performance issues, leading to faster resolution and reduced downtime.

You can ask the AI Assistant questions like:

• Were there any alerts triggered for [application name] today?

• How many agents are affected by the latest issue with [application name]?

• What locations are experiencing problems with [application name]?

Documentation Skill

The assistant allows users to ask natural language questions about the ThousandEyes product and API documentation, as well as public blogs. It streamlines access to technical information, providing quick answers to product questions along with references and hyperlinks to supporting documentation for deeper exploration.

You can ask the AI Assistant questions like:

• "What are the supported metrics for Cloud Agent tests?"

• "How can I create a new test using the ThousandEyes API?"

• "What is the default interval for HTTP server tests?"

To get started, reach out to your Account Team or Support to opt-in.

2025-06-17

End of Life for Ubuntu 20.04 LTS (“Focal”) in 13 Days

Ubuntu 20.04 LTS (“Focal”) will reach End of Life on Monday, June 30th, 2025. This is only 13 days away. Enterprise Agents not upgraded by then will stop submitting results to the ThousandEyes platform.

This affects:

• Package-based installations.

• Image-based installations:

  • The ThousandEyes Virtual Appliance (TEVA) for VirtualBox, VMware ESXi, and Hyper-V.

  • The ThousandEyes Physical Appliance (TEPA) for Intel/ASUS NUC and Raspberry Pi 4.

• Container images for Cisco Application Hosting Framework (CAF) for all Cisco Devices.

• Docker for Linux container images.

Please take action to ensure that your environment is running the latest available installation type images.

Updated images and packages for all affected install types are available. For detailed upgrade instructions and additional information, refer to the relevant links below.

For Linux package installations, see Upgrading Linux Packages.

For TEVA and TEPA installations, you can use the automated upgrade capabilities built into the TEVA UI locally or within the ThousandEyes web application. You can also manually replace the image and use a virtual agent cluster to preserve the test configuration, using the instructions here: Replacing an Enterprise Agent Using the Agent Clustering Method.

You can now back up and restore an Enterprise Agent, in case you encounter issues with the automatic upgrade process. For more information, see Backup and Restore your Enterprise Agent Configuration.

For CAF upgrade instructions, see: Upgrading Cisco Devices.

For Linux Docker instructions, see: Upgrading Docker Agents.

As previously announced in New Container Image Major Version for Cisco Devices, our containers for Cisco devices and Docker for Linux are now built against an Alpine Linux base instead of an Ubuntu base.

2025-06-30

Updates for Browser-Based Tests

• The Chromium upgrade for browser-based tests has concluded. The default Chromium version for browser-based tests is now Chromium 132, and the latest Chromium version for browser-based tests is now Chromium 137.

  If you use transaction tests, you should start self-testing in the new Chromium version to identify any potential incompatibility with your transaction tests early. For more information, see Working with Dual Chromium.

• Transaction tests can now take up to 12 screenshots.