I have a weired problem that my IIS gets shot down by DEP and throws an error message on the screen (typical memory could not be wtitten error). I have checked event logs and there is nothing close the time stamp of error. I have even added IIS and IIS worker process in exception list of Data Execution protection. still it thorws that error that IIS shutdown by DEP. this causes my exchange emails to go down. It happens 3-4 times daily. once I click ok on the error mails strat working again. any ideas ?