Hello,
After executing healthchecker script on exchange 2013 server , an error is mentioned
MAPI Front End App Pool GC Mode: Workstation --- Error
To Fix this issue go into the file MSExchangeMapiFrontEndAppPool_CLRConfig.config in the Exchange Bin directory and change the GCServer to true and recycle the MAPI Front End App Pool
the significance of this error and advantage will be it will improve users outlook experience
Checked : https://ingogegenwarth.wordpress.com/2016/06/23/exchange-performancegarbage-collection/