Iphlpapi.dll is a module containing the functions used by the Windows IP Helper API. Iphlpapi.dll error messages when Windows shuts down or starts up, or while users are installing or opening a certain program without its required dll file. These iphlpapi.dll errors are mostly caused by the situation that lead to removal or corruption iphlpapi.dll file. Some case, these errors could indicate virus, malware or registry error. If you need an anti-virus software, you can take a chance for Panda Internet Security 2010.

Common iphllpapi.dll error messages:
- "Iphlpapi.dll Not Found"
- "This application failed to start because iphlpapi.dll was not found. Re-installing the application may fix this problem."
- "Iphlpapi.dll file cannot start"
- "The file iphlpapi.dll is missing."
- "A required component is missing: iphlpapi.dll. Please install [APPLICATION] again."

How to install iphlpapi.dll file?

1. Press Start and select Run
2. Type CMD and press Enter (or if you use Windows ME, type COMMAND)
3. Type regsvr32 iphlpapi.dll and press Enter
4. In the end, you should receive a message saying that your file was successfully installed or uninstalled.