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--- title: Troubleshoot VMware replication appliance health issues in Azure Site Recovery description: This article describes troubleshooting replication appliance health issues in Azure Site Recovery. ms.service: azure-site-recovery ms.topic: concept-article ms.date: 12/09/2025 author: Jeronika-MS ms.author: v-gajeronika # Customer intent: As an IT administrator managing VMware environments, I want to troubleshoot replication appliance health issues in my Azure Site Recovery setup so that I can ensure reliable disaster recovery and smooth data replication. --- # Troubleshoot replication appliance health issues In Azure Site Recovery, an on-premises replication appliance handles disaster recovery for VMware virtual machines. This appliance coordinates communication between your on-premises VMware setup and Azure, ensuring smooth data replication and recovery. This article describes how to troubleshoot a replication appliance health issue. ## Before you start Before you start troubleshooting, ensure that: - You understand how to [deploy Azure Site Recovery replication appliance - Modernized](./deploy-vmware-azure-replication-appliance-modernized.md). - Review the [support requirements for Azure Site Recovery replication appliance](./replication-appliance-support-matrix.md). ## Troubleshoot process If you see the following error in the appliance health status: ### Troubleshoot certificate renewal This document describes how to troubleshoot replication appliance health issues in Azure Site Recovery for the following critical replication appliance issues: | Issue | Error ID | |-------|----------| | Process Server | 549009 | | Proxy server | 549003 | | Replication service | 549005 | | Recovery services agent | 549011 | | Site Recovery provider | 305 | | Reprotection server | 549007 | To troubleshoot these issues, follow these steps: 1. Navigate to the [replication appliance](./deploy-vmware-azure-replication-appliance-modernized.md) and log in. 2. Open the Microsoft Appliance configuration manager and ensure to upgrade all the appliance components to the latest version. Find the latest versions [here](./site-recovery-whats-new.md#supported-updates) and follow the upgrade steps [here](./upgrade-mobility-service-modernized.md#upgrade-appliance). 3. Navigate to the **Certificate renewal** section and select **Renew certificate**. This triggers the certificate renewal operation. Wait for it to complete. :::image type="content" source="./media/vmware-troubleshoot-appliance-health-issue/certificate.png" alt-text="Screenshot of appliance health error."::: ### Troubleshoot other error **If you see the following for your web app in replication appliance:** :::image type="content" source="./media/vmware-troubleshoot-appliance-health-issue/appliance-health.png" alt-text="Screenshot of appliance health error excel."::: Follow these steps: 1. Open PowerShell. 2. Enter `cd "C:\Program Files\Microsoft Azure Appliance Configuration Manager\Scripts\PowerShell"`. 3. Enter `.\WebBinding.ps1` to complete the process. ## Next steps If you're still facing issues, contact Microsoft Support for further assistance.