Solution to the unavailability of server applications after installing dotnetfx.exe in ASP. NET 2.0

Download dotnetfx.exeand langpack.exe from the software. After installation, ASP. net2.0 can be accessed. After the server is restarted, the following error occurs:

The Web application you are attempting to access on this web server is currently unavailable. Please click "refresh" in the web browser to try your request again.

Administrator Note: you can find the error details for the specific request failure cause in the system event log of the Web server. Check this log item to find out the cause of this error.

View the log: it is not possible to run two different versions of ASP. net in the same IIS process. please use the IIS administration tool to reconfigure your server to run the application in a separate process.

That is, different Asp.net versions cannot be run in the same IIS process. You need to use the IIS management tool to reset the server so that it can run in a separate process.
My solution:
1. Create a new application pool in the application pool.

2. The name is apppoolnet2.0 (the name can be set as needed), and the existing program pool is selected as the template.

3. Right-click the site and set the application pool to the name you just set.

Now, there should be no problem in running the 2.0 website without affecting the operation of other sites. If you have any good solutions, let's discuss them together.