It's a simple job having only one step. If let the job's steps run as "SQL Server Integration Services Package", everything is OK. If use proxy it fails with error message saying "Unable to start execution of step 1 (reason: Error authenticating proxy DOMAIN\local_admin_proxy, system error: The user name or password is incorrect.). The step failed."
The proxy's identity is a local administrator user. The setting is SQL Server 2016 database and Management Studio, more information available if needed.
Thank you in advance for your help.