After switching to FIPS security mode, all the users are deleted and the Administrator password is reset to default pull tag password

This behavior is as per the iLO FIPS security mode design. You are required to update the Administrator password. (APPSOL-179331)

Workaround:

Update the correct Administrator password by using any one of Appliance Node CLI commands:

To store the default pull tab sticker password: system store-default-BMC-credentials

To store the updated Administrator password: system store-updated-admin-BMC-credentials