Shulou(Shulou.com)05/31 Report--

HTTP error 500.21-Internal Server Error solution is what, many novices are not very clear about this, in order to help you solve this problem, the following editor will explain in detail for you, people with this need can come to learn, I hope you can gain something.

Environment: Aliyun ECS,IIS publishing website

System: Windows Server 2008 R2

Reason: although you can see from iis that .net4.0 has been installed, in fact, the installation is not in place, in fact, the prompt is already very accurate, as shown in figure 1.

This is due to the fact that. Net freamwork 4.0 was installed earlier than IIS, and the problem can be solved by executing the command and reinstalling it.

Solution:

1. Open the command prompt: start > run > enter "cmd", and enter enter to enter the command line

2. Execute the installation command: C:\ Windows\ Microsoft.NET\ Framework\ v4.0.30319 > aspnet_regiis-I, enter and execute

Three, done!

There is a picture and the truth:

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