RODC local authentication not working when domain controller was down

[Sin Ngo]

Hi,There was a planned power outage at a site which hosted the domain controller. The other site has a read only domain controller. When the domain controller went down, the computers at the remote site were unable to authenticate and log in. I've added the read only domain controller role to the other site and don't understand why the local users were unable to authenticate. I didn't have the inter-site data transfer. Was this the cause?

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