Solution to nonsensical and 500 errors when debugging .Net 4.0 website in IIS7.5

I just deployed the ii7 dll written in x86, and the following problems will occur

iis 7 x86, Could not load file or assembly 'Name' or one of its dependencies. An attempt was made to load a program with an incorrect format.

To solve this problem, just set the iis compatible x86 program. The specific steps are:

1. Start-> Run

2.

3. Advanced settings, just set Enable 32 - Bit Applications to True.

The solution to the nonsensical 500 error that appears on the .Net 4.0 website when debugging it in IIS7.5 that comes with Win7 Ultimate Edition does not mention the cause, but only the phenomenon.

Install Win7 and install VS2010, in which VS2010 comes with the .Net 4.0 runtime library. Turn on the built-in IIS function. It may be that only the flagship version comes with IIS. I have not tried it with other versions. Create a new website in IIS, in the application pool, set the website to use the .NET Framework v4.0 runtime library.

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IE reported a 500 server error.

Because we are sure that there is no problem with the website using the debugging server that comes with VS, and there will be no errors. Therefore, it is probably an IIS setting issue. Later, after inquiries, the reason was that when I installed the system, I installed VS2010 first and then enabled IIS. In this case, .NET 4 was not registered in IIS, and the IIS that comes with Win7 only supports .NET 2.0. Therefore, you need to register it manually.

The registration steps are as follows:

Start by entering the word cmd in the search box, and then the cmd.exe application

cmd.exe will appear. Right click on it and select Run as administrator.

Paste the following command into the command line window and press Enter to complete the registration.
"%WINDIR%\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe" -iru -enable At this time, we see that in IIS, the 4.0 runtime support registration is successful.

Refresh IE and the website comes out normally.

Unrecognized attribute "targetFramework" ---Solution: After installing VS2010, the following error will occur when a website created using .NET Framework 4 is placed under IIS (7.0):

The "Version Information" tells us that the versions of .NET Framework and ASP.NET are both 2.0, and we used .NET Framework 4.0 when making the website, so the website must be set up The .NET Framework properties are 4.0.

Open Control Panel--Administrative Tools--Internet Information Services (IIS) Manager under Win7, select the default website, select "Advanced Settings..." in the "Manage Website" column on the right, and change "Applications" Pool" is changed to "ASP.NET v4.0", as shown in the following figure:

Now enter localhost in the browser, the problem should be solved!

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