MSBBN: "Iphlpapi.dll Cannot Start" Error Message When You Try to Install Broadband

To resolve this issue, follow these steps.

Completely Remove Your Adapter

1. Physically remove the Microsoft Broadband Networking
   adapter from your computer.
2. Re-start your computer in Safe Mode.
   
   To do this, restart
   your computer, press the F8 key repeatedly while the system is restarting, and
   then click Safe Mode on the Boot menu.
3. Right-click My Computer, and then click
   Properties.
4. Click Device Manager, and then expand
   Network Adapters.
5. Right-click any instances of the Microsoft Broadband
   Networking adapter, and then click Remove.
6. Restart your computer as you typically do.

Remove the Broadband Networking Program, Microsoft Internet Explorer, and Internet Connection Sharing

1. Click Start, point to Settings, and then click Control Panel.
2. Double-click Add/Remove Programs, click
   Microsoft Broadband Networking, click
   Add/Remove, and then click Remove Microsoft Broadband
   Networking.
3. Click Finish.
4. Click Start, point toSettings, and then click Control Panel.
5. Double-click Add/Remove Programs, click
   Microsoft Internet Explorer, click
   Add/Remove, and then click Restore the Previous
   Windows Configuration
6. Click OK
7. Click Start, point toSettings, and then click Control Panel.
8. Double-click Add/Remove Programs, click
   Microsoft Broadband Networking, click
   Add/Remove, click the Windows Setup tab, click
   Internet Tools, and then click
   Details.
9. Make sure that the Internet Connection Sharingcheck box is not selected.
10. Click OK, and then click
    OK again.

Rename the Iphlpapi.dll File

1. Restart your computer in Safe Mode again.
2. Click Start, click Run,
   type command, and then click
   OK.
3. At the command prompt, type arp
   -d.
4. At the command prompt, type ren
   c:\windows\system\iphlpapi.dll c:\windows\system\iphlpapi.OLD, and
   then press ENTER.
5. Type exit, and then press
   ENTER.

Restore the Iphlpapi.dll File

1. Restart your computer as you typically do.
2. Click Start, click Run,
   and then type sfc.
3. Click Extract one file from installation
   disk.
4. Type c:\windows\system\iphlpapi.dll, and
   then click Start.
   
   On the next screen under Restore
   from, click Browse, and then locate the
   Windows cab files on your Windows Setup CD.
5. Click OK.

Reinstall Internet Explorer

1. Insert your Microsoft Broadband Networking CD in the
   CD-ROM drive.
2. Quit the Microsoft Broadband Networking Setup Wizard if it
   starts automatically.
3. Double-click My computer, right-click your CD-Rom drive,
   and then click Explore.
4. Open the IE6 folder, open the
   eng folder, open the CD folder, and then double-click
   the Ie6setup.exe file to reinstall Internet
   Explorer.

Reinstall Your Broadband Networking Hardware and Software

Follow the instructions that are provided with your Microsoft
Broadband Networking hardware to install your hardware and
software.