Why do uploads fail while using an ASP.NET file upload control to upload large files?
Ravi Kumar
""
httpRuntime executionTimeout="110" maxRequestLength="2097151" requestLengthDiskThreshold="512" useFullyQualifiedRedirectUrl="false" minFreeThreads="8" minLocalRequestFreeThreads="4" appRequestQueueLimit="100"
by default 4 mb is set so incase file size exceeds this limit , application crashes , this limit can be exceeded by following tag in machine config or web config