AsyncFileUpload “Cannot Access A Closed File exception
Quick post for those who may be suffering from a "Cannot Access A Closed File" exception when attempting to upload/save larger files with the AjaxControlToolkit AsyncFileUpload control... Fix for me: Add/edit an entry in your app's web.config <httpRuntime requestLengthDiskThreshold="15360" /> In my case this was caused by having a requestLengthDiskThreshold set too low, and was causing [...]