Known troubleshooting information can help you diagnose and correct problems during the installation and configuration of Site Recovery Manager. Cannot Restore SQL Database to a 32-Bit Target Virtual Machine During Site Recovery Manager UpgradeYou might encounter problems restoring a SQL database on a 32-bit target virtual machine when you upgrade or migrate Site Recovery Manager. Site Recovery Manager Server Does Not StartSite Recovery Manager depends on other services. If one of those services is not running, the Site Recovery Manager Server does not start. vSphere Client Cannot Connect to Site Recovery ManagerConnecting to the Site Recovery Manager interface in the vSphere Client fails. Site Pairing Fails Because of Different Certificate Trust MethodsIf you use custom certificates that a certificate authority signs, connecting the Site Recovery Manager sites fails if the root certificate from the certificate authority is not present on Site Recovery Manager Server. Error at vService Bindings When Deploying the vSphere Replication ApplianceWhen you deploy the vSphere Replication appliance, you get an error at vService bindings in the Deploy OVF Template wizard. OVF Package is Invalid and Cannot be DeployedWhen you attempt to deploy OVF for the vSphere Replication appliance, an OVF package error might occur. vSphere Replication Appliance or vSphere Replication Server Does Not Deploy from the Site Recovery Manager InterfaceIf problems occur when you use the Site Recovery Manager interface to deploy a vSphere Replication appliance or a vSphere Replication server, you can deploy the OVF manually. vSphere Replication Cannot Establish a Connection to the HostsReplications fail because vSphere Replication cannot connect to the hosts. Connection Errors Between vSphere Replication and SQL Server Cannot be ResolvedYou cannot resolve a connection error between the vSphere Replication appliance and SQL Server. 404 Error Message when Attempting to Pair vSphere Replication AppliancesPairing vSphere Replication appliances might result in a 404 error message. vSphere Replication Service Fails with Unresolved Host ErrorIf the address of vCenter Server is not set to a fully qualified domain name (FQDN) or to a literal address, the vSphere Replication service can stop unexpectedly or fail to start after a reboot. Increase the Memory of the vSphere Replication Server for Large DeploymentsIf you deploy an additional vSphere Replication server, you might need to increase the memory of the vSphere Replication server if that server manages large numbers of virtual machines. vSphere Replication Appliance Extension Cannot Be DeletedIf you delete the vSphere Replication appliance virtual machine, the virtual appliance management interface (VAMI) is not available to delete the appliance extension that still exists in vCenter Server. Uploading a Valid Certificate to vSphere Replication Results in a WarningWhen you upload a custom certificate to the vSphere Replication appliance, you see a warning even if the certificate is valid. vSphere Replication Status Shows as DisconnectedThe status of the vSphere Replication appliance shows as Disconnected if you are running the Site Recovery Manager client plug-in on Windows XP SP2 x64. vSphere Replication Server Registration Takes Several MinutesvSphere Replication server registration might take a long time depending on the number of hosts in the vCenter Server inventory. vSphere Replication is Inaccessible After Changing vCenter Server CertificateIf you change the SSL certificate of vCenter Server, you cannot access vSphere Replication.