Hi @AdrianC
You can obtain the passphrase from the replication appliance. From the configuration server(Appliance) launch a windows command prompt and run below
C:\ProgramData\ASR\home\svsystems\bin\genpassphrase.exe -v to view the current passphrase.
Don't regenerate the passphrase. This will break connectivity and you will have to reregister the replication appliance.
and then proceed to register mobility agent with configuration server.
If the deployed appliance is ASR modern appliance, you can see details i provided for obtaining the passphrase on a similar thread here https://learn.microsoft.com/en-us/answers/questions/1183528/azure-site-recovery-(modernized-vmware)-configurat
If the issue still exists, It is important to investigate the logs to know the exact cause of the issue. In that case please share the registration logs C:\ProgramData\ASRSetupLogs\ASRUnifiedAgentConfigurator.log to link to this thread to AzCommunity@microsoft.com with subject line as "ATTN: Priyanka".
Also, you can notify me by commenting on this thread.
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