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iphlpsvc.dll missing and high CPU usage errors

May 28, 2014

DLL ToolDLL TOOL downlaods iphlpsvc.dll and repairs iphlpsvc.dll problems including iphlpsvc.dll stops and needs to be closed while accessing the same information, missing error and high CPU usage for your PC installed with Microsoft Windows OS such as Windows XP and Windows 8.

What is iphlpsvc.dll?

Iphlpsvc.dll is a dynamic link library of IP Helper service. It provides tunnel connectivity using IP-HTTPS, and IPv6 transition technologies including 6to4, ISATAP, Port Proxy, and Teredo. It is noted that this service is launched by svchost.exe, although it is named as iphlpsvc.dll. This service is available in Windows 7, 8 and Vista.

An executable file is shared by the IP Helper service as LocalSystem with other services. If this service is stopped, the computer will not have the enhanced connectivity benefits that these technologies offer. If the IP Helper fails to load or initialize, the error is recorded into the Event Log. The startup entry of this service is installed as a Windows service.

Even if iphlpsvc.dll is unable to load or initialize, Windows 7 startup should proceed, only with a message box that displays that the service has failed to start. IP Helper will not start, if the following services are stopped or disabled: NetIO Legacy TDI Support Driver, Network Store Interface Service, Remote Procedure Call (RPC), TCP/IP Protocol Driver and Windows Management Instrumentation.

Common signs of iphlpsvc.dll issues

  1. Svchost (netsvcs) running at about 40% CPU usage, iphlpsvc causing the problem.
  2. Failed to open tunnel adapter__Teredo__IP Helper iphlpsvc svchost ntdll.
  3. BFE, iphlpsvc, WSCSVC, WinDefend, MpsSvc all missing from services.msc.

Your Windows may suffer from a problem that the CPU is at 90-100% almost all the time. The problem is being caused by iphlpsvc which is running under scvhost.exe. This iphlpsvc is averaging above half CPU usage according to the resource manager. Your computer runs fairly normally even though this is consuming so much CPU, however, it is undesirable to keep happening.

What are causes of iphlpsvc.dll issues?

This error can be caused by incompatibility of some applications/devices, such as Virtual Box USB device.

And it probably comes from the Trojan / spyware infection, which makes use of functions of iphlpsvc.dll to collect personal info to a remote device, thus consuming a lot of CPU.

Teredo adopts a new technology which is used to send IPV6 packets across the network. And iphlpsvc.dll is launched by svchost.exe. If these two files are corrupted by broken or invalid registry entries, iphlpsvc.dll will be also abnormal.

Fixes for iphlpsvc.dll errors

If you have an iphlpsvc.dll error associated with Microsoft Teredo Tunneling Adapter, just locate Microsoft Teredo Tunneling Adapter and change the settings by checking its properties.

But you will find it hard to determine the exact cause of iphlpsvc.dll error if it is caused by version conflicts, malware infection or errors in the registry entries. In this case, professional repair software like DLL TOOL will be needed for you to perform auto check.

Then you choose options for fixing iphlpsvc.dll error, either manually or automatically depending on the specific situation. But with DLL TOOL, you are able to repair registry malfunction as well as download iphlpsvc.dll and other dll files for free.

With the help of DLL TOOL, malware infection can be cleansed and the iphlpsvc.dll file won't be deleted to lead to further issues.