UpdatedOctober 28, 2026

Configuring and troubleshooting High Availability

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This article provides a convenient way of locating High Availability related articles. Explore the topics below by clicking on each article title.

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SonicWall offers multiple method of configuring High Availability. One of the most common methods of deployment is the Active\Standby deployment, however, it can be configured in Active\Passive, Active\Active DPI and Active\Active Cluster type deployments as well. Below are the articles which can help with the configuration:

Configuration Related Articles:	How To Configure High Availability (HA) Deploy SonicWall NSv in Active Standby HA mode in Azure How Can I Swap The Roles of Primary and Backup Units in HA How Can I perform Firmware upgrade for an HA setup Configuring High Availability Monitoring Settings How to enable Virtual IPV6 for HA Deployment
Troubleshooting Related Articles:	How Do I Associate an HA Pair in Mysonicwall.com How Do I Disassociate an HA Pair in Mysonicwall.com How Can I disable PortShield? Firmware Upgrade Did Not Complete on Primary Error Message - "HA Peer's Module Differs From Our Module" While Configuring HA Failed to Log Into The Secondary HA Firewall with Monitoring IP Error Message When trying to Acquire an HA pair - "Login Failed as the Serial Numbers Do Not Match" HA Failover Not Triggered When Monitoring Interface is Down
Licensing Related Articles:	SonicWall High Availability Licensing Enforcement Error Messages How to Confirm if High Availability Pair is Properly Licensed HA: Error - License And Signature Updates Will Not Work On Idle Firewall Unless HA Monitoring How to Troubleshoot License Error For Firewalls In High Availability? Associating An Appliance At First Registration On MySonicWall For High Availability
Additional Info:	Tips for High Availability Setup What is Stateful High Availability? Explanation of Virtual MAC in High Availability How Link Control Monitor and Heartbeat works in HA Configuration Stateful and Non-Stateful High Availability Prerequisites

October 28, 2026
How to Configure High Availability (HA)
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Stateful and Non-Stateful High Availability Prerequisites
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Configuring and troubleshooting High Availability

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