Login request failing

dkact Wed Jul 10, 2013 2:17 pm

Hi,
I am new to jmeter. I need to perform load test on .net appleication. When I record my scenario, My login action results into failuer

here is the sampler result against the login request

Thread Name: My test 1-1
Sample Start: 2013-07-10 12:06:41 IST
Load time: 300
Latency: 300
Size in bytes: 4030
Headers size in bytes: 266
Body size in bytes: 3764
Sample Count: 1
Error Count: 1
Response code: 500
Response message: Internal Server Error

Response headers:
HTTP/1.1 500 Internal Server Error
Cache-Control: private
Content-Type: text/html; charset=utf-8
Server: Microsoft-IIS/7.5
X-AspNetMvc-Version: 4.0
X-AspNet-Version: 4.0.30319
X-Powered-By: ASP.NET
Date: Wed, 10 Jul 2013 06:39:15 GMT
Content-Length: 3764

HTTPSampleResult fields:
ContentType: text/html; charset=utf-8
DataEncoding: utf-8

I dont know what is the issue. because when i login manually with same credentials, application logs me in.