Storefront 3.12 - Cannot Join Server Group - Joining the Server Group failed. Joiner cleanup was unsuccessful. Please refer to the Windows Event Log for Details

When attempting to add a Storefront Server to a Server group the following error is observed on Joiner Server: Error:Cannot Join Server Group - Joining the Server Group failed. Joiner cleanup was unsuccessful. Please refer to the Windows Event Log for Details. See image below Event logs: Event 1 ...