Overview 💥
Downgrading the Liongard Windows Agent is strongly discouraged and should only be performed in exceptional, support-guided scenarios.
Modern Liongard agents are continuously improved with:
Security patches
Platform compatibility updates
Inspection logic changes
Stability and performance enhancements
Downgrading to an older agent version can lead to inspection failures, unsupported behavior, and security risk.
Important Warnings Before Downgrading 🚨
Liongard does not recommend downgrading agents. Partners should be aware of the following risks:
❌ Inspectors may fail due to unsupported or removed functionality
🔒 Security vulnerabilities may be reintroduced
🧩 Schema and inspection logic mismatches can occur
🛑 End-of-Life (EOL) agent versions are not supported
📉 Unexpected platform behavior may occur
Liongard has officially announced End of Life (EOL) for several older agent versions. Downgrading to an EOL version is unsupported.
Security & Best Practices 🌟
From a security and operational standpoint:
Agents are designed to auto-update to the latest secure version
New releases include critical vulnerability fixes
Downgrading violates security best practices
Older agents may not meet current compliance or hardening standards
✅ Best practice: Always run the latest available agent version
Support Scope Regarding Downgraded Agents 👨💻
If an agent is downgraded and issues occur:
Liongard Support will recommend upgrading to the latest version
Troubleshooting will not proceed until the agent is upgraded
Liongard is not responsible for failures caused by downgraded or unsupported agents
Downgrading the Windows Agent 🖥️
⚠️ Proceed only if explicitly advised by Liongard Support
Step 1️⃣: Uninstall the Existing Agent
Open Control Panel
Navigate to Programs → Programs & Features
Select Liongard Agent
Click Uninstall
Alternatively, uninstall by running the currently installed MSI and selecting Uninstall.
🔁 A system reboot is not required
Step 2️⃣: Download the Desired Agent Version
Liongard can provide a static download link for a specific agent version if required.
Example format:
https://agents.static.liongard.com/LiongardAgent5.1.1.msi
📌 Notes:
As the URL implies, this is a static link, to that version. You can generally index different versions as we request, for example if we wanted to go to 5.0.5, we could specify that at the end of the URL right before the ".msi"
The version number is defined directly in the filename
❗ Do not assume availability of all historical versions
Step 3️⃣: Install the Downgraded Agent
Run the downloaded MSI
Complete the installation
Verify agent registration in the Liongard platform
⚠️ If inspections fail after installation, upgrade immediately to the latest agent version.
Known Issues After Downgrading 🧑🏫
Common problems include:
Inspectors failing to execute
Authentication or permission errors
Missing or incompatible inspection data
Auto-update logic breaking
Platform-side validation failures
These behaviors are expected and not considered defects.
Recommended Resolution for Issues 🙌
If you encounter agent-related issues:
Confirm the agent is running as LOCAL SYSTEM
Ensure auto-update scheduling is enabled
Review endpoint security tools (EDR / AV)
Summary 🤩
Downgrading Liongard agents is not recommended
Older agents may be unsupported or EOL
Security and inspection reliability are compromised
Liongard Support generally recommends upgrading, except in specific circumstances where it may not be necessary.
Proceed only with explicit guidance and clear risk acceptance