Minn. R. Civ. P. 4.06
As amended through February 1, 2024
Service of summons and other process shall be proved by the certificate of the sheriff or other peace officer making it, by the affidavit of any other person making it, by the written admission or acknowledgment of the party served, or if served by publication, by the affidavit of the printer or the printer's designee. The proof of service in all cases other than by published notice shall state the time, place, and manner of service. Failure to make proof of service shall not affect the validity of the service.
Minn. R. Civ. P. 4.06