Thread:Project:Support desk/404 errors after upgrade from 1.15 to 1.20/reply (8)

well...I don't see PHP logs specifically, under logs/FailedReqLogFiles/W3SVC1, I see the url of my MainPage listed under warning: MODULE_SET_RESPONSE_ERROR_STATUS, FastCGIModule, Notification:128,HttpStatus 500 ...could this account for the failure to log in?