Symptoms

To unregister, go to Unisphere for PowerMax > Settings > Management > Secure Connect Gateway and click Unregister. Click OK And the below error appears: Authorization failure. Incorrect credentials were provided for gateway: 11.22.33.44:9443

Cause

The registration which is shown in Unisphere for PowerMax is stale and got stuck somehow.

Resolution

High-level overview of the resolution: Stop SMASRename or Delete the /opt/emc/SMAS/jboss/standalone/data/esrs/esrs.json fileStart SMAS Procedure for different variants of Unisphere for PowerMax: In Windows: Go to services.msc. Stop EMC Symmetrix Management Application Server serviceRename or Delete the ...\EMC\SMAS\jboss\standalone\data\esrs\esrs.json fileStart EMC Symmetrix Management Application Server service Alternatively using Windows command line Net stop "EMC Symmetrix Management Application Server"Rename or Delete the ...\EMC\SMAS\jboss\standalone\data\esrs\esrs.json fileNet start "EMC Symmetrix Management Application Server" In Linux: systemctl stop u4p.serviceRename or Delete the /opt/emc/SMAS/jboss/standalone/data/esrs/esrs.json filesystemctl start u4p.service For Embedded Unisphere for PowerMax 10.x, it must be done from backend by support so raise a case with Dell Technologies PowerMax support team.

Support Cases