Agent Installation Issue After Migration

Hello,

We have installed an All-in-One FortiSIEM setup with one collector, and successfully migrated our old environment to the new one, including manual IP changes. The system is now operating normally.

However, we are encountering an issue with agent installations. While we are able to install the Windows and Linux agents on some machines, the installation fails on others — even though they are running the same OS versions, are on the same subnet, and we are using the same installation scripts and configuring the collector as revers proxy.

Could you please advise on how to proceed with troubleshooting this issue?

The errors are as follow:

Continuing with installation... Agent parameters validation failed. Please check if the parameters you passed to ./fortisiem-linux-agent-installer-7.4.0.0435.sh are correct and re-run the script with correct values. Please check if the registration organization, username, or password has errors. INSTALLATION FAILED