# Page Not Found

The URL `product-documentation/global-vantage-points/enterprise-agents/managing/upgrade-ubuntu-20.04-focal-based-thousandeyes-appliances` does not exist.

You might be looking for one of these pages:
- [Unlocking the ThousandEyes Appliance](https://docs.thousandeyes.com/product-documentation/global-vantage-points/enterprise-agents/managing/unlocking-the-thousandeyes-appliance.md)
- [Archived - Upgrade Ubuntu 20.04 Focal-Based ThousandEyes Appliances](https://docs.thousandeyes.com/product-documentation/archived-documentation/upgrade-ubuntu-20.04-focal-based-thousandeyes-appliances.md)
- [Secure Access to ThousandEyes Appliances](https://docs.thousandeyes.com/product-documentation/global-vantage-points/enterprise-agents/configuring/secure-access-to-thousandeyes-appliances.md)
- [Upgrading Operating Systems for Enterprise Agents](https://docs.thousandeyes.com/product-documentation/global-vantage-points/enterprise-agents/managing/upgrading-enterprise-agents.md)
- [Configuring a Local Mirror of the ThousandEyes Package Repository](https://docs.thousandeyes.com/product-documentation/global-vantage-points/enterprise-agents/managing/configuring-a-local-mirror-of-the-thousandeyes-package-repository.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://docs.thousandeyes.com/sitemap.md) - Complete documentation index
2. **View the full content**: [/llms-full.txt](https://docs.thousandeyes.com/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/product-documentation/global-vantage-points/enterprise-agents/managing/unlocking-the-thousandeyes-appliance.md`)
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