How to examine the results of load test

Hi all,
I am using .net buit-in tool (load test) to test my web page  which is going to be visited by many users at the same time. but i cant examine the results exactly.
 For instance,
after the load test my web page has a lot of errors but i dont have any errors on my page, what does this error mean? and i have also high rate of failed request, threshold violations

so if anyone helps me understand why this thresholdand failed request values are so high and my page gets so much error, i will be appreciated.
 
Thanks in advance.

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