Why is Checksum mismatch on Deployment Clients which were rebuilt with same IP but different hostnames?

[dm1]

We recently rebuilt a server which had splunk UF installed. After the rebuild, the IP remained same but hostname changed.

When we reinstalled the UF, pointed to the Deployment Server and added the Deployment Client to the serverclass, none of the apps were able to be downloaded due to checksum mismatch error.

I tried everything from removing the DC from the serverclass and disabling the deploymentclient config on the DC and even reinstalled the UF but still nothing changed.

Deployment server version - 7.3.6

Deployment client - 9.0

can someone please help fix this issue ?

[isoutamo]

Officially splunk support only same or smaller versions as deployment clients than DS.

[richgalloway]

Have you tried restarting the DS?