Hello, I have set the performance counter "MSExchange Calendar Attendant\Requests". According to the recommended value, it should remain '0" all time. But on my servers it beyond the threshold value. I Google it for the solution and found some where that it could be due to any calendar related issue. In further troubleshooting I have fetch out the details for exchange mailbox via powershell comandlet "get-mailboxcalendarsettings" and found around 100 user have "NONE" value in the attribute "AutomateProcessing". Is this could be the reason of failing Calendar Attendant? If yes what could be the reason of value "NONE" in the "AutomateProcessing" attribute. Also what could be the possible solution to resolve it? Will move mailbox help or need to set "AutoUpdate" value in "AutomateProcessing" by command shell. P.S. We are running Exchange 2007 SP3 with Rollup 4 in our environment. Thanks in advance for your suggestion/help. Vikas Shrestha

Hello Amit, Thanks for sharing this information. According the above information if i set "AutomateProcessing" value to "AutoUpdate" than there should be no calendar attendant request fail. I am right? Regards, VikasRegards, Vikas Shrestha (MCST)

hi Vikas, is the issue fixed? If yes then what is the solution.

Hello Ved, No issue is not completely resolved yet. However after changing the "AutomateProcessing" parameter value to "AutoUpdate" there is value down in the performance counter, but it is still over the threshold limit which is should remain "0" all time. I am still looking for permanent fix. Please let me know if you find any. Regards, Vikas ShresthaRegards, Vikas Shrestha (MCTS)