Storefront 3.12 CU5 Error: Propagation failed on one or more Servers

PROBLEM: When administrator launches Storefront Management Console and attempts to perform "Propagate Changes" on Servers , the process fails with the following error: Error: Propagation failed on one or more Servers Event logs on Primary Server shows the following event: Event ID 31 An error has...

Propagation Fails with error "Failed to get the end status of the server configuration update."

"Failed to get the end status of the server configuration update." "Failure to notify of configuration update." "An erorr occurred running the command : 'Add-DSFeatureInstances'...