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Due to security updates from HPE, the default credentials vary depending on the server's manufacturing date and firmware version. Default Login Credentials for HPE iLO 4 Use the following combinations. Option 1 is the most common for older units; Option 2 applies to many servers shipped after late 2018/2019.

Here is the content regarding the default password for HPE ProLiant servers equipped with iLO 4 (Integrated Lights-Out 4).