Iis6.0 cannot find server or DNS error and site cannot open solution

Today, a friend of windows 2003 iis6.0 server cannot open the website and has a dns error. After careful analysis and Baidu search, let's take a look at the solution.

Today, a friend of windows 2003 iis6.0 server cannot open the website and has a dns error. After careful analysis and Baidu search, let's take a look at the solution.

Page cannot be displayed.
The page to be searched is currently unavailable. This Web site may have technical problems, or you may need to adjust the browser settings.
Server or DNS error not found.

Ping is successful, and telnet port 80 is normal. Check HTTPERROR under LOGFILES and find many error messages such as "36_Connections_Refused.

Baidu searched for "_ Connections_Refused" and found Microsoft's official solution: http://support.microsoft.com/kb/934878/zh-cn:
1. Enter the registry and enter the specific item: HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesHTTPParameters.
2. Create a dword Value and enter the name "EnableAggressiveMemoryUsage"
3. Change the value to 1.
4. Start-run and Enter CMD. Enter the CMD window.
5. Run: net stop http/y.
6. Run: iisreset/restart
The IIS problem is resolved.

Important this section, method, or task contains steps that tell you how to modify the registry. However, improper registry modification may cause serious problems. Therefore, make sure that you perform these steps carefully. Modify the registry before the additional protection is enabled. Then, you can restore the Registry when a problem occurs. For details about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756 (http://support.microsoft.com/kb/322756/) how to back up and restore in Windows Registry

To work around this issue, add the EnableAggressiveMemoryUsage registry key to the following registry subkeys:
HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesHTTPParameters
Then, set the EnableAggressiveMemoryUsage registry entry to 1.

To do this, follow these steps:
Click Start. Click Run. In the "Enter Registry Editor" dialog box, and then click OK.
Click the following registry subkeys:
HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesHTTPParameters
Click the edit button to point to the new menu, and then click the double byte value.
Type: EnableAggressiveMemoryUsage, and then press ENTER.
Click on the edit menu to modify
Type 1 in the value data box, and then click OK
Click the menu on the file to exit the Registry Editor.
Restart the HTTP service. To perform this operation, follow these steps:
Click Start. Click Run, Enter cmd to open the box, and then click OK.
Type net stop http/y in the command prompt, and then press ENTER.
Type iisreset/restart in the command prompt, and then press ENTER.