You need to be aware of IIS deploying. NET Projects

1. Be sure to check the HTTP error of the common HTTP function, otherwise the error message of the page cannot be displayed.

HTTP Error 500.19-internal Server error

1. This is related to the VS installation and IIS installation sequence, first installed VS, then IIS installed, resulting in the inability to register ASPNET.

Note: The paths of the 32-bit operating system and the 64-bit operating system are different

32-bit: C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727

64-bit: C:\WINDOWS\Microsoft.NET\Framework64\v2.0.50727

After Cmd arrives at the same path, execute: aspnet_regiis.exe–i, Complete installation

2. Permissions issues cause

Find the folder where your source files are located, my is E:\ source code \ASP.NET\DTCMS10BETA2

Right-click on properties, switch to the Security tab, add the Everyone user group to the safe list, and give them permissions as required (I gave them permission to modify), after changing as follows:

You need to be aware of IIS deploying. NET Projects