How to troubleshoot missing network icons

hi everyone,

My LAN connection icon in the network connections folder is no longer being displayed. The network icon is been missing from my system tray.
How do I recover the missing network icon ? Please advice something...

First of all, you need to verify certain settings and services.

Verify the network adapter setting:

• Right-click My Computer, and then click Properties.
• Click the Hardware tab, and then click Device Manager.
• Expand Network Adapters, and then verify that the correct network card is listed.
• Double-click the network card, and then verify that the "This device is working properly" message appears in the Device status box on the General tab.

Verify that services are started:

• Right-click My Computer, and then click Manage.
• Expand Services and Applications, and then click Services.
• In the right pane, verify that the following services are started:

1. Remote Procedure Call (RPC)
2. Network Connections (this service depends on RPC service)
3. Plug and Play
4. COM+ Event System (this service depends on RPC service)
5. Remote Access Connection Manager (this service depends on Telephony service)
6. Telephony (this service depends on RPC and PnP service)

Verify the logon setting:

• Double-click the COM+ Event System service.
• Click the Log On tab.
• Under Log on as, verify that Local System account is selected. This is the default setting.

Verify the desktop interaction setting:

• Double-click the Network Connection service.
• Under Local System account, verify that the service is running.
• Verify that the Allow service to interact with desktop option is turned on.

Verify the networking services setting:

• In Control Panel, double-click Add/Remove Programs.
• Click Add/Remove Windows Components.
• Under Networking Services, verify that Simple TCP/IP Services is turned on.

Verify that the network DLLs.

Verifying the services and settings is very important.
After verifying still you dont get the network icon, then follow these steps-

At a command prompt, type sfc /purgecache, and then press ENTER. The Windows File Checker starts. Verify that all Windows Protected Files in the System32 folder are intact.


Verify that the registry keys are intact and correct:

1. Start Registry Editor.
   
2. Locate and then click the following registry key:
   HKEY_CLASSES_ROOT\Interface
   If the key is not present, create it.
   
3. Verify that the value for this key is:
   {0000010C-0000-0000-C000-000000000046}

Use Dcomcnfg.exe to reset the Default Impersonation Level setting:

• Click Start, click Run, type dcomcnfg, and then click OK.
• On the Default Properties tab, click any setting other than Anonymous in the Default Impersonation Level box.

In the end, you may just perform the following:

1. Remove and then reinstall the latest Windows operating system service pack.
2. Make sure that there are no non-present, ghosted, or hidden network adapters in your computer.
3. Remove and then reinstall the network adapter.
4. Remove any third-party network adapter management software. Temporarily remove any teaming software.

If the connectoid is getting deleted only as soon as a user is physically connected to the network, follow these steps:

• Restart the computer while it is not connected to the network to see if a Group Policy object (GPO) is being downloaded.
• Start GPresult to find out which GPOs are applied.
• Locate and open Group policy/User Configuration/Windows Settings/Internet Explorer Maintenance/Connection/Connection Settings/. Click to clear the Delete existing connection settings if present check box.